Why do so many eukaryotic pathogens cause highly refractory and long-term chronic infections that are difficult to treat in contrast with prokaryotic pathogens?
Answers
Globally, eukaryotic microbial pathogens play a significant role in disease and mortality.
Pharmacological resistance has challenged these therapeutic efforts, despite the fact that a large portion of their impact can be reduced by drug therapy, similar to how it is done with prokaryotic germs. Here, we talk about the difficulties brought on by eukaryotic microbial pathogens and how they compare to or diverge from the difficulties brought on by prokaryotic antibiotic resistance.
The treatments employed for a number of significant eukaryotic bacteria are then outlined in detail, along with the mechanisms that have developed to counteract these treatments.
There are significant hazards to global health, which are especially apparent in developing countries, due to the rapid emergence of resistance and the constrained pipeline of new medication therapies.
However, we go into detail on how combining modern technology with biological knowledge, epidemiology, and evolutionary research might help maintain current treatments, foresee the establishment of resistance, or enhance the application of new treatments.
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Related Questions
what is the tm of the most gc-rich dna sample?
Answers
The melting temperature (Tm) of the most GC-rich DNA sample will be higher than that of a less GC-rich sample.
The melting temperature, or Tm, of DNA is the temperature at which half of the DNA strands in a double-stranded DNA molecule become separated, or denatured, into single strands.
The Tm is influenced by several factors, including the length and sequence of the DNA, as well as environmental conditions such as pH and salt concentration. However, one of the most significant factors affecting Tm is the GC content of the DNA.
GC base pairs form three hydrogen bonds, which are stronger than the two hydrogen bonds formed by AT base pairs. Therefore, the higher the GC content, the more stable the DNA molecule and the higher the Tm. In general, the Tm of DNA increases by approximately 0.5-1.0°C for every 1% increase in GC content.
Therefore, the Tm of the most GC-rich DNA sample will be higher than that of a less GC-rich sample, reflecting the greater stability of the double-stranded DNA molecule due to the increased number of GC base pairs.
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Why are plants important to the carbon water and nitrogen cycles?
Answers
Answer:
The carbon and water cycle I know, but I can't help with the nitrogen cycle. Sorry.
Explanation:
Carbon cycle - The role that plants play in the carbon cycle is that they take in our carbon dioxide and put out oxygen, which we breathe. So we give the plant air and they give us air.
Water cycle - The role that plants play in the water cycle is when it rains, the plants absorb some of the water in their roots, thus making them strong and therefore helping the ground not become a mud hole.
Sorry that I can't help with the nitrogen cycle. But I hope what I was able to help you with helps!
Phospholipids are found in a limited number of foods. They consists of a glycerol backbone with two fatty acids and a compound that contains phosphate. Why are they important in food and in the body?.
Answers
A substance with one or more hydroxyl groups is alcohol. A saturated carbon atom is joined to the hydroxyl functional group. 1. Alcohols are a class of volatile hydroxyl chemicals created by distilling hydrocarbons.
Answer is alcohol
The body's reaction to alcohol is what?Alcohol is a depressant of the central nervous system. This indicates that the medication slows brain activity. Your mood, conduct, and self-control may change as a result. It may impair one's memory and ability to think coherently. Your physical control and coordination may be impacted by alcohol as well.
Alcohol has an impact on all of your body's organs. It might increase your heart rate and blood pressure, for instance. If you consume too much alcohol at once, you might become sick.
The effects of alcohol vary from person to person and depend on a number of variables, including:
your alcohol consumptionhow soon you consumed ithow much food you consumed before drinkingYou areYour sexual orientationYour ethnicity or raceYour state of healthRegardless matter whether your family has a history of drinking issuesA typical drink in the US comprises approximately 14 grams of pure alcohol, which can be found in:
A 12-ounce beer with a 5% alcohol contentWine with a 12% alcohol content, 5 ouncesA "shot" or 1.5 ounces of 40% alcohol-containing distilled spirits or liquorTo Learn more About alcohol., Refer:
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organism that makes its own food with the sun's light
Answers
Answer:
Plant
Explanation:
Plants photosynthesis which is the process a plant goes through in order to make food.
Assuming these are carbon dioxide molecules, which way do you think the molecules will move and why?
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
B. Into the cell. They want to move from low to high concentration (UP the concentration gradient).
Answers
Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata (Figure 3b).
Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
The option (A) is the correct answer. This statement is the required answer.
Which best describes Active Transport?
A. Using energy, membrane proteins pick up particles and move them against the concentration gradient.
B. Without energy, particles move freely with the concentration gradient.
C. Using energy, glycoproteins pick up particles and move them against the concentration gradient.
D. Using energy, membrane proteins pick up particles and move them with the concentration gradient.
Answers
A. Using energy, membrane proteins pick up particles and move them against the concentration gradient.
What is the complementary strand of DNA that is made during DNA replication if the template/parent strand of DNA reads ATG GGC CAT?
A. TAC CCG GTA
B. UAC CCG GUA
C. ATG GGC CAT
D. CGA AAT AGC
Answers
The complementary strand of DNA that is made during DNA replication if the template/parent strand of DNA reads ATG GGC CAT is TAC CCG GTA. Thus, the correct option for this question is A.
What is DNA replication?DNA replication may be defined as a type of biological process through which two identical replicas of DNA form from one original DNA molecule. This process makes a copy of the DNA in a cell is made before the cell divides.
When it comes to the complementary strand of DNA, either of the two chains makes up a double helix of DNA, with corresponding positions on the two chains being composed of a pair of complementary bases.
For example, if Adenine A is present in the parental DNA, then it should be complementarily bounded to the thymine and vice versa. Similarly, if Cytosine is present in the parental strand of DNA, then it should be complementarily bounded by guanine and vice versa.
Therefore, the correct option for this question is A.
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Which of the following statements is/are false?
Select one:
a. Short term habituation requires post synaptic changes to AMPA receptors
b. Memory is stored in DNA and can thus be passed down to progeny.
c. Serotonin is involved in dihabituation/sensitization
d. a & b
e. b & c
Answers
Both statements a and b are false thus option: d. a & b is the correct answer because short-term habituation typically involves a decrease in neurotransmitter release at the synapse, leading to reduced synaptic strength.
a. It is not necessary to make postsynaptic adjustments to AMPA receptors for short-term habituation. Instead, it usually entails a reduction in neurotransmitter release at the synapses, which results in a weakening of the synaptic connection.
b. Memory is not stored in DNA and cannot be passed down to progeny. The connectivity and potency of synaptic connections between neurons serve as memory storage. DNA does play a role in determining the structure and function of an organism's nervous system, but specific memories are not encoded in DNA.
c. Serotonin is involved in habituation/sensitization. It can modulate neural circuits and enhance the response of neurons to stimuli, which is a key process in sensitization and habituation.
In conclusion, option d. is the correct answer, that is, both statements a and b are false.
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predict what would happen if the lac repressor were altered so it could not release lactose once lactose was bound to it.
Answers
If one of the alleles for your experiment was lost (reached 0% frequency) and the other became fixed (reached 100% frequency), is it possible for the lost allele to be brought back into the population? explain your response
Answers
It is not possible for the lost allele to be brought back into the population if it has reached 0% frequency and the other allele has become fixed at 100% frequency. This is because the lost allele is no longer present in the population and there are no individuals carrying that allele to pass it on to future generations.
The fixed allele, on the other hand, is present in all individuals of the population and will continue to be passed on to future generations. Without the presence of the lost allele, it cannot be reintroduced into the population through genetic processes such as mutation or genetic drift. Therefore, the lost allele will remain absent from the population unless it is reintroduced through some external means, such as the introduction of new individuals carrying the lost allele into the population.
It is possible for the lost allele to be brought back into the population. This could be done through gene flow from another population, mutation, or a combination of the two. Mutations create new alleles, while gene flow introduces alleles from another population into the current one.
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The image below shows one of the earliest stages of DNA replication. What
role does helicase play in DNA replication?
A. Helicase breaks the hydrogen bonds and unwinds a section of DNA.
B. Helicase connects the floating nucleotides to the template strands.
C. Helicase checks the base pairs in each new strand of DNA.
D. Helicase bonds together pieces of DNA as new strands form.
Answers
Answer:DNA helicases are also called molecular motors. They unwind the DNA with the help of ATP hydrolysis, and thus facilitate the replication and transcription processes. ... Studies have suggested that DNA helicases may play a role in plant DNA recombination, as it is prominent during the meiotic prophase of plants.
Explanation:
Role played by Helicase in DNA Replication is to break down the hydrogen bonds and unwinds a section of DNA.
What is DNA?
DNA, or deoxyribonucleic acid, is the hereditary material in humans located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
Mitochondria are structures within cells that convert the energy from food into a form that cells can use.
The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people.
The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.
What is DNA Replication?In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule.
DNA replication occurs in all living organisms acting as the most essential part for biological inheritance and it is essential for cell division during growth and repair of damaged tissues, while it also ensures that each of the new cells receives its own copy of the DNA.
The cell possesses the distinctive property of division, which makes replication of DNA essential.
DNA is made up of a double helix of two complementary strands. The double helix describes the appearance of a double-stranded DNA which is composed of two linear strands running opposite to each other and twist together to form.
During replication, these strands are separated. Each strand of the original DNA molecule then serves as a template for the production of its counterpart, a process referred to as semiconservative replication.
As a result of semi-conservative replication, the new helix will be composed of an original DNA strand as well as a newly synthesized strand.
Cellular proofreading and error-checking mechanisms ensure near perfect fidelity for DNA replication.
What is the role of Helicases in DNA Replication?Helicases are enzymes that bind and remodel nucleic acid or nucleic acid protein complexes.
Helicases are of two types- DNA Helicases and RNA Helicases.
Role of Helicases:
- Separate the double stranded DNA into single one to allow copying.
- Initiate synthesis at the origin of unwinding
- Helicases use the energy stored in a molecule called ATP, which serves as the energy currency of cells, to break the bonds.
- DNA helicases also function in other cellular processes where double-stranded DNA must be separated, including DNA repair and transcription.
- RNA helicases are involved in shaping the form of RNA molecules, during all processes involving RNA, such as transcription, splicing, and translation.
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In corn (Zea mays), purple kernels (R) are dominant to yellow kernels (r). Cobs from the
offspring of a cross between a purple plant and yellow plant were used in a lab. A
student counts 329 purple and 299 yellow kernels on one cob. The student decides to
complete a chi-squared test to analyze the data, hypothesizing that the purple plant
was heterozygous. What would be the EXPECTED value for the purple plants in this
case?
Answers
The correct answer to this question would be x = 1.44. A 1:1 ratio of purple and yellow kernels would result from crossing a heterozygous purple corn plant (Rr) with a yellow corn plant (rr).
It would be predicted that 314 of the 628 kernels would be purple and 314 would be yellow. As given, cross between a purple heterozygous corn plant (Rr) and a recessive yellow corn plant (rr) yield offspring that display a 1:1 ratio between purple kernels and yellow kernels.
It would be predicted that 279 of the total kernels would be purple and 279 would be yellow, however the findings in this case are not very different. The chi-square value is calculated as: the range of acceptable result should be 1.43-1.44
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The complete question is:
In corn (Zea mays), purple kernels (R) are dominant to yellow kernels (r). Cobs from the offspring of a cross between a purple plant and yellow plant were used in a lab.
A student counts 329 purple and 299 yellow kernels on one cob. The student decides to complete a chi-squared test to analyze the data, hypothesizing that the purple plant was heterozygous.
What would be the EXPECTED value for the purple plants in this case?
Explain why the pyramid of ocean life directly affects human health.
Answers
Answer: humans eat some the ocean life, and other fish don't have any food because of it.
Explanation:
In what part of the ocean do you find most marine organisms?
O shallow, coastal waters
O fisheries
O deep ocean waters
O none of the above
Answers
The most marine organisms are found in Shallow coastal water ( A )
Most Marine Organisms live on coastal habitats even though these habitats are about 7% of the total ocean waters. while the majority of the open ocean waters constitute the habitat for about 50 to 80% of life found on earth.
Most marine organisms live in shallow coastal waters because of the accessibility to sunshine and oxygen while the deep ocean waters are always very dark having little access to sunshine almost throughout the years.
Hence we can conclude that most marine organisms are found in the shallow coastal waters of the ocean.
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Departu
REGION IV-A CALABARZON
SCHOOLS DIVISION OF IMUS CITY
$123
3.
V. ASSESSMENT (Time Frame: 40 minutes)
A
VO
A Directions: Read and analyze the questions carefully. Choose and write the letter of the correct answer on your answer
1. Which of the following could be an indication of a volcanic eruption?
1. Shaking or trembling in areas near the volcano.
II. Changing in shape, tilt, or elevation of the volcano.
M. Releasing of smoke, sulfuric dioxide, and other gases.
IV. Changing in water level and temperature of underground water.
A. II, II, IV
B. I, II, III
C. II, III, IV
D. I, III, IV
2. What happens to the earth's surface after an earthquake?
A. Destruction of buildings, roads, and bridges.
B. Large amounts of volcanic dust cause roofs to fall.
C. Lahar causes landslides and flooding of some areas.
D. Hot lava travels or flows very far and burn, bury, or damage anything in its path.
3. What happened to Taal Island's surface when the Taal Volcano erupted in January 2020?
1. There were many casualties.
II. Residential houses were ruined.
III. Boulders of rocks and landslides destroyed the place.
IV. The place was covered with lahar and volcanic ash.
A. I, III
B. II, IV
C. II, III
D.I, IV
4. An earthquake causes changes to the earth's surface. Which of the following environmental changes is caused by an
earthquake
1. Ground fissures
II. Landslide
III. Liquefaction
IV. Volcanic ash
A. I only
B. I and II
C. I, II, III
D. II, III, IV
5. What are the consequences of a devastating earthquake on the Earth's surface?
1. Fast floods, mud slides, and rock falls.
II. Pyroclastic materials and rock fragments pile up.
III. Most bridges and elevated concretes are toppled.
IV. Huge amount of lahar covers a certain land area.
A. I only
B. II, III
C. lll only
D. IV only
B. Directions: Read the question and write the answer on your answer sheet.
As a student, how can you help the victims of earthquakes and volcanic eruptions?
help plsss due tommorow I swear plsss help non relaTed answer will get reported
Answers
Answer:
1.b...
2.a...
3.d...
4.b...
5.c...
Explanation:
sana makatulong
Write an expository essay explaining how the ideas of cell theory, heredity and genetics, and
evolation through natural selection are used by biologists to explain the unity and diversity of
life on earth today
Answers
Unity in diversity is best explained by the collaboration of research works by scientists, with the help of cell theories and genetics and natural selection.
What is evolution and how come unity in diversity can be explained?Evolution is the gradual change in the evolving of different species on Earth so far from simple to complex phenomena. Natural selection was discovered by Darwin and was first invented in the land of flinches, with the alteration in the beaks. Genetics is always remembered by Mendel's experiment initially and contributed largely to the evolution of species. Unity in diversity is the collaborative invention of all the researchers that got in the way of inventing natural selection to the cell theory. Biologists explain that this vast diversity on our planet is all safe and together due to unity.
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1. Understand and define adaptation and adaptive evolution
2. Explain convergent and divergent evolution Describe homologous and vestigial structures
3. Explain evidence of evolution Discuss misconceptions about the theory of evolution
4. Define species and describe how scientists identify species as different
5. Describe genetic variables that lead to speciation
6. Identify prezygotic and postzygotic reproductive barriers
7. Explain allopatric and sympatric speciation
8. Describe adaptive radiation
9. Describe pathways of species evolution in hybrid zones
10. Explain the two major theories on rates of speciation
11. Define population genetics and describe how scientists use population genetics in studying population evolution
12. Define and apply the Hardy-Weinberg principle and discuss its importance
13. Describe the different types of variation in a population
14. Explain why only natural selection can act upon heritable variation
15. Describe genetic drift and the bottleneck effect
16. Explain how each evolutionary force can influence a population's allele frequencies
17. Explain the different ways natural selection can shape populations
Answers
Answer:
girl thats an essay, do u understand any of those points and how to answer at all?
HELP PLS: NEED ANSWER ASAPPPPPPPPPPPP <3
1. Explain acid deposition. Your explanation should include the following:
• The sources of acid deposition
• The chemical equations involved in acid deposition formation
• An explanation of the types of acid deposition
• A discussion of the effects of acid deposition
• A drawing that shows the sources, formation, and precipitation of acid deposition
Answers
Acid deposition, also known as acid rain or acid precipitation, refers to the deposition of acidic substances from the atmosphere onto the Earth's surface. It is primarily caused by emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) from human activities, particularly the burning of fossil fuels such as coal and oil in power plants, industrial processes, and vehicle emissions.
The chemical equations involved in acid deposition formation are as follows:
1. Formation of sulfuric acid (H2SO4):SO2 (sulfur dioxide) + O2 (oxygen) + H2O (water) → H2SO4 (sulfuric acid)
2. Formation of nitric acid (HNO3):NOx (nitrogen oxides) + OH (hydroxyl radical) → HNO3 (nitric acid)
Acid deposition can occur in two main forms: wet deposition and dry deposition.
1. Wet deposition: This occurs when acidic compounds in the atmosphere combine with water vapor to form acids that are then brought down to the Earth's surface through precipitation, such as rain, snow, sleet, or fog.2. Dry deposition: In this form, acidic compounds settle directly onto the Earth's surface without the involvement of precipitation. These compounds can be in the form of gases, particles, or dust, which are deposited onto plants, buildings, soil, and water bodies.The effects of acid deposition can be significant and wide-ranging:
1. Environmental impact: Acid deposition can acidify soil and bodies of water, leading to detrimental effects on aquatic ecosystems and plant life. It can harm fish, amphibians, and other aquatic organisms, as well as affect the pH levels and nutrient availability in soil, hindering plant growth.2. Damage to infrastructure: Acidic substances in acid deposition can corrode and damage buildings, statues, bridges, and other structures made of materials such as limestone, marble, and metals.3. Human health concerns: Acid deposition does not directly pose a significant health risk to humans. However, the pollutants that contribute to acid deposition, such as sulfur dioxide and nitrogen oxides, can contribute to respiratory problems and aggravate existing respiratory conditions in susceptible individuals.\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)
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Where are sperm produced?
A. Vas deferens
B. Testes
C. Ejaculatory duct
D. Epididymis
Answers
Answer:
Option B
testes not copied
The zygomatic arch is composed of processes of the.
Answers
The zygomatic arch is composed of processes of the temporal and zygomatic bones. The temporal process arises from the temporal bone, and the zygomatic process originates from the zygomatic bone.
The zygomatic arch is a major bony feature that runs across the lateral aspect of the face. It is commonly referred to as the cheekbone or the malar bone. It is a strong, curved structure that forms the bony boundary of the orbit anteriorly and the temporal bone's zygomatic process posteriorly.
The temporal process of the zygomatic bone is triangular, broad, and thin. It projects backward and, in part, forms the zygomatic arch's anterior half. The zygomatic process is a rectangular, relatively small projection of the frontal surface of the zygomatic bone. It projects upward and laterally, forms the cheekbone's prominence, and meets the temporal process. The two processes fuse to form the zygomatic arch. The zygomatic arch has many crucial roles in the body.
Open reduction with rigid internal fixation is recommended if there is significant displacement or malocclusion of the fracture. In conclusion, the zygomatic arch is a vital bony feature of the face, composed of processes of the temporal and zygomatic bones. It has essential roles in mastication and facial muscle attachment, and it can be injured as a result of trauma to the face or head.
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17. Choose the answer that best describes the geologic process that contributes to the formation of fault-block mountains.
A)The Earth's crust is pushed together which tilts layers of rock on their side producing steep scarps.
B)The Earth's crust is pulled apart creating deep folds and then pushed together generating steep scarps.
C)The Earth's crust is pushed together which forces up blocks vertically creating steep scarps.
D)The Earth's crust stretched from swelling underneath and vertical movement by blocks generates steep scarps.
Answers
Answer:
B.
Explanation:
Have a great day! And good luck
5. Why isn't the radiometric dating of sedimentary rock exact? O O Because sedimentary rock only forms where there were ancient seas. Because sedimentary rock is constructed of many different layers. Because sedimentary rock is made up of weathered and eroded bits of igneous rock. Because sedimentary rock only contains carbon-14 and no other radioactive isotopes.
Answers
The radiometric dating of sedimentary rock is not exact due to the fact that sedimentary rock is made up of weathered and eroded bits of other rocks, including igneous rocks.
. Why isn't the radiometric dating of sedimentary rock exact?Radiometric dating relies on measuring the abundance of radioactive isotopes and their decay products within a rock sample. However, in the case of sedimentary rock, the minerals within the rock are typically not the original components but rather fragments from different sources. These fragments may have different ages and could have undergone various geological processes before being deposited as sedimentary rock.
As a result, the different minerals and fragments within the sedimentary rock may have different isotopic compositions and ages. When attempting to date a sedimentary rock using radiometric methods, it becomes challenging to accurately determine the initial composition of the minerals and the timing of their formation.
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9. A baby is kidnapped from a couple's home. The parents of the kidnapped child have blood types A and
B. As the detective on the case, you identify two suspects with a baby that matches the age and gender
of the missing child. The suspects claim that the baby is theirs. From their driver's licenses you learn
that their blood types are A and AB. You type the baby's blood, it is type O. Can the suspects be the
biological parents of the baby and if not, could this be the kidnapped child? Explain your answers.
Answers
As the detective investigating the case, you distinguish two offenders with a baby that matches the offenders' age and gender. The genotypes provided make it impossible to identify the real Baby Daddy.
What are a couple genotype examples?Your genotype is indeed the specific arrangement of alleles that affect a certain characteristic, such as eye color. As an example, I have brown eyes. My eye color is a result of my genes. I carry the alleles for my mother's and both of my parents' eye colors.
What two genotypes are most common?The two main categories are heterozygous and homozygous genotypes. If an organism has a heterozygous genotype, they inherit two different gene variations. If a creature.
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I’m looking for the answer q 1 and 2 please
Answers
Answer:
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Which level of organization is best represented by the cactus plant?
A
cell
B
organ
C
organism
D
tissue
Answers
The level of organization is best represented by the cactus plant organism. Thus, option C is correct.
What is organisation level in the living things?In the case of the living things first of all they has been made up of the cell and the cell has been known as the basic as well as fundamental unit of the living things, after that the cells has been combined and they must form tissue, or we can say that the group of the cell is known as tissue.
Tissues has been combined together and they form the muscles and these muscles are of several types and than after that muscles combined together and they form the organ and each of the organ of the body has been made up of different types of the tissue. Like heart has been made up of such type of tissue that never takes rest.
At last the organs or we can say that two three organs has been combined together to form the organ system of the body such as the nervous system, respiratory system, and these systems has been combinedly form the whole organism.
Therefore, The level of organization is best represented by the cactus plant organism. Thus, option C is correct.
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How did cyanobacteria aid the evolution of complex life on land? Do you think cyanobacteria are as significant to this process today as
they were during Precambrian time?
NEED ASAPPPP ITS TIMED
Answers
Cyanobacteria are one of the most ancient groups of photosynthetic organisms. They played a critical role in the evolution of complex life on land by producing oxygen. They are also known as blue-green algae. They have existed on Earth for more than 3.5 billion years and played an essential role in creating Earth's oxygen-rich atmosphere. The emergence of cyanobacteria marks a significant point in Earth's evolution.
The presence of oxygen allowed for the development of complex organisms, including plants and animals. Cyanobacteria aided the evolution of complex life on land by their ability to photosynthesize. They were the first organisms to evolve a complex process that enabled them to use sunlight to convert carbon dioxide and water into oxygen and glucose.
This process is known as photosynthesis, and it is responsible for the oxygen-rich atmosphere of our planet. Cyanobacteria were the first photosynthetic organisms to produce oxygen. During Precambrian time, cyanobacteria produced more oxygen than any other organism. They were responsible for oxygenating Earth's atmosphere and allowing for the evolution of aerobic organisms.
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what are bridge animal?
Answers
Answer:A bridge (or marker) is a signal to the animal that a reward is coming.
Explanation:
how many different processes can be involved in changing the allele frequency?
A. 10
B, 1 only natural selection
C. 4
D. 5
E. Way too many count.
Answers
Answer:
5
Explanation:
The Hardy-Weinberg equilibrium principle says that allele frequencies in a population will remain constant in the absence of the four factors that could change them. Those factors are natural selection, mutation, genetic drift, and migration (gene flow). In fact, we know they are probably always affecting populations.
Answer:
D. 5
Explanation:
There are 5 factors can be involved in changing the allele frequency.
The students in Mrs. Smith's class tested various paper towel brands for strength. The students collected data after they each performed the same experiment with the different brands. When comparing results; Bounty came out on top. How do we know the test results were valid?
Answers
Answer:
If you collected, counted and then double checked by the teacher. Then used a calculater they should be correct
Explanation:
What are the three involved elements in Photosynthesis?
Answers
Answer:
Carbon dioxide , water and water