It enables students to develop a deeper awareness of their own bodies, the functions of the various organs we are born with, and how our systems operate. Biology educates us about the environment and ecosystems in addition to our bodily processes.
How important is biology, exactly?Biology is a branch of study that aids in our understanding of how the living world functions, evolves, and interacts with its numerous species, including humans. The standard of living has increased thanks to developments in biology in many fields, including medicine, agriculture, biotechnology, and many more.
Why are students helped by biology?By studying biology, students get the knowledge necessary to make more educated decisions about their own health as well as important biological issues like the usage of antibiotics and genetically modified food.
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Albino individuals lack all pigmentation so that their hair and skin are white. This pedigree shows that albinism -
Female
Male
1
Albino
Individuals
2
A is a sex-linked gene.
B is carried only by females in this family,
C requires both parents to be albinos.
D is a recessive genetic trait.
Answer:
I -Albino individuals
PLEASE WRITE IN OWN WORDS, HELP!
Answer:
Evolution means change in the physical features of an organism.
Explanation:
Evolution means change in the physical features of an organism. Evolution occurs in the population of an organisms due to various factors such as mutation, non-random mating and natural selection. Nonrandom mating occurs when an organism prefer mating with particular superior organisms or with the similar organism. Mutation in the genetic makeup of an organism is also responsible evolution. this mutation occurs when an organism experience ultraviolet radiation from the sun, or also occur if an error in DNA during cell division. Gene flow is also known as gene migration is the transfer of genetic material or traits from one population to another when the organism is migrated to another environment. Some organisms are selected naturally because they have the potential to survive in that environment so they survive and that doesn't adopt itself to the environment, it will extinct from the environment.
If a population of geese is sampled by scientists and is found to be experiencing growth, then which of the following is accurate?
Select one or more:
a. Births outnumbered deaths, on average, over the period studied
b. The birds are growing to a larger size each year
c. There is no limit to the population size
d. No geese are dispersing out of the population
e. Deaths outnumbered births every year of the study
If a population of geese is sampled by scientists and is found to be experiencing growth, then a. Births outnumbered deaths, on average, over the period studied. This indicates that there were more geese born than dying during the study, resulting in a growing population. A. Births outnumbered deaths, on average, over the period studied
Based on the information provided, if a population of geese is experiencing growth, the following statement is accurate:
a. Births outnumbered deaths, on average, over the period studied
This indicates that there were more geese born than dying during the study, resulting in a growing population.
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a __________ is a dna stretch of 180 bp that specifies a 60 amino acid homeodomain.
A homeobox is a DNA stretch of 180 base pairs (bp) that specifies a 60 amino acid homeodomain.
Genes encoding transcription factors known as homeodomain proteins contain regions called homeoboxes. The conserved protein motif known as the homeodomain controls the expression of target genes by binding to certain DNA sequences. In many different animals, homeobox genes are crucial for pattern creation, cell differentiation, and embryonic development. Developmental defects and diseases can result from homeobox gene mutations or changes.
Adenine (A), guanine (G), cytosine (C), and thymine (T) are the four chemical bases that make up the code in which the information in DNA is stored. More than 99 percent of the 3 billion bases that make up human DNA are the same in every person.
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Compare and contrast: Create a double bubble map of Platyhelminthes and Aschelminthes
The foremost difference among Platyhelminthes and Aschelminthes is that Platyhelminthes is a phylum containing acoelomates while Aschelminthes is a phylum containing pseudocoelomates.
Platyhelminths lack a non-residing cuticle at the same time as Aschelminths have a non-residing cuticle as a frame covering.
Platyhelminthes and Aschelminthes are phyla of proper animals that belong to the department Eumatozoa. Both phyla are extraordinarily enthusiastic as parasites.
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Humans, and other animals, exhale
A. oxygen
B. natural gas
C. carbon dioxide
D. cytoplasm
Answer:
C
Explanation:
Humans,and other animals,exhale carbon dioxide and inhale oxygen.
Answer:
c: humand and animals exhale carbon dioxide
Spirilla is what type of bacteria
Pea plants heterozygous for flower position (Axial or Terminal, axial is the dominant trait) and stem length (Tall or Dwarf, tall is the dominant trait) are allowed to self-pollinate, and 400 of the resulting seeds are planted. How many offspring would be predicted to have terminal flowers and be dwarf? Explain your answer using Punnett square.
The cross between heterozygous axial-tall and axial-dwarf pea plants results in 9:3:3:1 phenotypic ratio for the offspring. The 9:3:3:1 ratio indicates that 9 offspring would be predicted to have axial-tall phenotype, 3 offspring would have axial-dwarf phenotype, 3 offspring would be terminal-tall, and 1 offspring would be terminal-dwarf.
Punnett square: **[Figure]**Therefore, the ratio of terminal-dwarf would be 1 out of 16 (or 6.25%) of the resulting seeds. To determine the number of offspring that would be predicted to have terminal flowers and be dwarf from the total 400 seeds planted, you would multiply 400 by 0.0625 to obtain 25 offspring (predicted).
Hence, 25 offspring would be predicted to have terminal flowers and be dwarf.
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The plasma state occurs when _____.
o Solids are frozen
o gases are heated
o liquids are boiled
o solids are melted
Answer:
B. Gases are heated
Explanation:
Answer:
solids are melted
Explanation:
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Describe how an action potential arriving at a presynaptic membrane of a neurone can result
In the depolarisation of the membrane of a post-synaptic neurone.
two individuals with the same genotype may not express the same phenotype because gene expression is influenced by:
Because of the interaction between genes and environment, two people with the identical genotype may not exhibit the same phenotype.
How does genotyping work?The term "genotype" broadly refers to an organism's genetic make-up, or, to put it another way, the entire set of its genes. The phrase can also be used more specifically to describe to a gene's alleles, or variant versions, that an organism carries.
Describe genotype through an example.A genotyping is a rating of the kind of variant that is present at a specific locus (i.e., place) in the genome. Symbols are a form of representation. For illustration, BB, Bb, and bb may be used to denote a certain gene variant.
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How much DNA is required for testing?
20 nanograms, about 800 cells
10 nanograms, about 400 cells
5 nanograms, about 200 cells
1 nanogram, about 40 cells
1 picogram, about 10 cells
The amount of DNA required for testing can vary depending on the specific testing method and the laboratory's protocols. However, generally speaking, modern DNA testing techniques can work with very small amounts of DNA.
Here is a breakdown of the approximate DNA amounts and cell numbers you provided:
20 nanograms: This amount of DNA is typically sufficient for most DNA testing methods. It is estimated to be extracted from approximately 800 cells.
10 nanograms: This amount is also generally acceptable for DNA testing and corresponds to approximately 400 cells.
5 nanograms: While slightly less DNA, around 200 cells can still provide enough material for many DNA testing purposes.
1 nanogram: This lower amount of DNA, extracted from about 40 cells, may still be usable for some DNA testing techniques, but it could be at the limit of detection for certain methods.
1 picogram: This is an extremely small amount of DNA and would be challenging to work with for most DNA testing applications.
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In an experiment, a researcher prepares a reaction mixture by dissolving a substance in a buffered solution. The substance is the substrate of a certain enzyme. The researcher adds a small amount of the enzyme to the reaction mixture and measures the amount of product that is formed over time. Which of the following best predicts the immediate result of adding more substrate to the reaction mixture at the point indicated by the arrow in Figure 1?
answer choices
The amount of product will decrease until the reaction rate goes to zero.
The amount of product will increase until the reaction reaches its equilibrium point or until the substrate is used up by the reaction.
The amount of product will increase without stopping because the enzyme will be unchanged by the reaction.
The amount of product will decrease until the reaction reaches its equilibrium point or until the enzyme is been used up by the reaction
Until equilibrium is reached or all of the substrate has been eaten, the amount of product will continue to increase.
How can the rate at which an enzyme-catalyzed reaction occurs be determined?It is possible to identify enzyme catalysis by measuring the appearance of the product or the disappearance of the reactants. The same reactants may be used in a reaction, but a different catalyst may produce different results.
Which of the following would speed up how quickly reactants turn into products in a chemical reaction?The more the temperature rises, the more crashes occur. As a reactant's concentration rises, the likelihood of reactant collisions increases as well, accelerating the rate of the reaction.
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in animals, fungi, and plants, bulk flow is always an active and atp-expensive process. this is best evidenced by the presence of a heartbeat in order for bulk flow to occur in animals.
It is false that bulk flow is always an active and atp-expensive process and it is evident by the presence of a heartbeat in order for bulk flow to occur in animals.
Active transport is the transfer of dissolved molecules from a location of lower concentration to a region of higher concentration across the cell membrane. The particles use expensive energy released during breathing to move against the gradient of concentration. Organic substances release energy through respiration, a chemical mechanism that is independent of a heartbeat. Exergonic reactions convert the molecules into new ones. Energy is released via the breakdown of adenosine triphosphate (ATP) into adenosine diphosphate (ADP) and phosphoric acid (Pi).
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EARTH SCIENCE //What is true about ice and liquid water?
A. Ice has a higher density than liquid water because it has less space between molecules.
B. Ice has a lower density than liquid water because it has more space between molecules.
C. Ice has a higher density than liquid water because it has more space between molecules.
D. Ice has a lower density than liquid water because it has less space between molecules.
Answer: B
Explanation:
When water freezes it expands.
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what do you notice is the main difference between the structure of the connective tissues and the structure of the epithelium? make sure to note the organization of cells in these two tissue types. how does this structure relate to function?
In the structure of epithelium, the cells are arranged in a regular fashion, either in a single layer or stacked one upon another to form many layers. Whereas in the connective tissues, the arrangement of the cells depends upon the location of the tissue, the cells are arranged irregularly. They can be either loosely packed or densely packed.
Since the function of epithelium is to form the outer layer of the skin or form the lining of organs, therefore the cells are arranged in a regular fashion to completely cover the organ they are present in.
Connective tissues have the function of supporting the other tissues or organs. For this the cells are arranged in an irregular haphazard manner so that they support the organ as well as remain light-weighed.
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You are viewing a patients karyotype. You see 23 chromosomes total. There
are no homologous chromosomes. Which type of cell are you viewing?
Answer:
You are viewing an egg cell
The type of cell that you are viewing is known as the Germ cell (sex cell). This is because the number of chromosomes in the germ cell is found to be 23 instead of 46.
What do you mean by Karyotype?Karyotype may be defined as the process through which the number of the appearance of chromosomes within the nucleus of the cell is determined in organisms or species. This type of process is utilized in order to examine the complete characteristics of chromosomes.
Germ cells are produced by meiosis. Due to this, they carry half the amount of genetic content in their nucleus as compared to the parental cell. They are haploid in nature.
When a female egg cell of 23 chromosomes fused with a male sperm cell of 23 chromosomes, it forms a zygote which is diploid and contains 46 chromosomes.
Therefore, the type of cell that you are viewing is known as the Germ cell (sex cell).
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Erwin Chargaff's research determined the percentage of the nitrogen bases within a strand of DNA. His work determined thatthe concentration of adenine is twice the concentration of thymine and the concentration of cytosine is twice the concentration of guanine.the percent of adenine is equal to the percent of guanine and the percent of cytosine is equal to the percent of thymine.the percent of adenine is equal to the percent of thymine and the percent of cytosine is equal to the percent of guanine.the concentrations of adenine, thymine, guanine, and cytosine are all equal.
Erwin Chargaff's research determined the composition of the nitrogen bases within a strand of DNA. His work determined that DNA composition varies, but the amount of adenine is always the same as thymine and the amount of cytosine is always the same as guanine. Chargaff also found that the composition of DNA varied from one species to another.
We can conclude that the correct answer is:
Answer:the percent of adenine is equal to the percent of thymine and the percent of cytosine is equal to the percent of guanine.4. Fruit fly gametes each have four chromosomes
24, or 16, possible chromosome
How many chromosome
combinations could results from fertilization
between a fruit fly egg and a sperm cell?
representing
combinations.
combinations
There are 256 possible chromosome combinations in total because every sperm and egg has 16 possible chromosome pairings.
Chromosome: what is it?Chromosomes have formations which resemble threads and house the DNA molecule in each cell's nucleus. Each chromosome is constructed from DNA that has been tightly wound around proteins known as histones numerous times to support its structure.
What use does a chromosome serve?DNA may be precisely duplicated during these cellular division thanks to chromosomes. So, once more. Our cells' nuclei include chromosomes, which enable precise DNA duplication during cell division. This guarantees that our internal processes go smoothly and effectively.
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Question 9 Regarding the theory of trees, which directory is a "leaf" node? O /usr/local/linuxgym-data O none of these choices O /home/student O all of these choices O /bin Question 10 1 pts Which fil
The node that is unconnected to any child nodes is referred to as a "leaf" node in the context of tree theory. It is frequently shown as the terminal node or endpoint in a tree structure.
When comparing the available options, "/usr/local/linuxgym-data," "/home/student," "/bin," and "none of these choices," it is unclear which directory is being referenced to as a leaf node. We need to understand the tree's structure and the connections between the directories in order to recognise a leaf node. It is impossible to tell which directory would be categorised as a leaf node without additional knowledge on the tree topology or the precise connections between these directories.
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What is a stimulus?
A. cells in the brain
B. something in the environment that affects organisms
C. a specialized type of cell in an organism
D. a product of photosynthesis
Answer:
B.something in the environment that affects organisms
Explanation:
B is the answer.
New mutations are not a major factor affecting the allele frequencies in a population because ______.
New mutations are not a major factor affecting the allele frequencies in a population because they are relatively rare. Mutations are spontaneous and random changes in the genetic material, and they occur infrequently and at random.
Most mutations are neutral or deleterious, and they are eliminated quickly by selection. The rate of mutation is relatively low in many organisms; the rate of substitution of nucleotides per site per year varies between different genes but is typically in the order of 10-9 to 10-8.
Mutations can be influenced by genetic drift and population size. The impact of mutations can be magnified if they occur in a small population or when a population undergoes a bottleneck, which results in a temporary reduction in the population size and a concomitant increase in genetic drift. Furthermore, mutations can be subject to selection, which can cause an increase or decrease in their frequency depending on whether they are beneficial or deleterious to the organism.
However, the contribution of mutation to the overall genetic variation in a population is relatively small, and other factors such as genetic drift and gene flow are usually more significant.
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Two or more species living together in a close, long-term relationship is called
Answer:
a partnerd relashinship
Explanation:
How might retaining too much heat be a disadvantage to an organism?
Answer:
Too much heat can disrupt subcellular structures such as membrane proteins, and enzymes while damaging the integrity of the plasma membrane.
Explanation:
Proteins are macromolecules made up of amino acids. These fold and bond to form several biologically important molecules. For instance, enzymes, a special type of protein functions by providing alternative reaction pathways. They work best at a specific pH and optimal temperature range, beyond which they become non-functional or denatured entirely.
The denaturing of proteins occur at high temperatures, and alter protein folding, bonding and other types of behavior. Furthermore, membrane proteins are important for regulating cell function. If these are disrupted, the system cannot maintain homeostasis i.e a constant internal environment.
*
In what process is RNA made in a cell?
What the answer
Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation.
is random
is a mechanism for evolution
is often related to disasters
is also called “migration”
deals with movement between populations
Answer:Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation.
✔ Genetic drift
is random
✔ Both
is a mechanism for evolution
✔ Genetic drift
is often related to disasters
✔ Gene flow
is also called “migration”
✔ Gene flow
deals with movement between populations
Explanation: i got it right
Answer:
Genetic drift- is random
Both- are a mechanism for evolution
Genetic drift- is often related to disasters
Gene flow- is also called "migration"
Gene flow- deals with movement between populations
Explanation:
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Provide a possible explanation for the
increase in size and weight of the elephants over millions of years.
The explanation for the increase in size and weight of the elephants over million years is that small evolution occurred over time, to increase the elephant size.
What is evolution?Evolution is a process in which the traits and characters of the organisms changes over time. These changes may occur due to adaptation and for food.
Thus, the explanation for the increase in size and weight of the elephants over million years is that small evolution occurred over time, to increase the elephant size.
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Homozygous vs Heterozygous Alleles
You did a gram stain on an older culture of gram cells, what color would the dead and live cells from the culture appear in a gram stain?
After gram staining, the cell will appear pink or red. As peptidoglycan cell walls degrade in older cultures, gram-positive cells are more likely to become gram-negative or gram variable. Cell walls start to deteriorate, which makes the crystal violet leave the cell.
What is gram staining?A Gram stain test is done to check for microorganisms everywhere a disease might be present.The two main subtypes of bacteria are infections that are Gram-positive and Gram-negative. Based on their responses to the Gram stain, the various bacterial species are separated. A Gram stain has a purple color. The bacteria in a sample either stay purple or change to pink or red when the dye and bacteria interact. If the bacteria remain purple, they are supposed to be Gram-positive. Gram-negative bacteria are those that turn pink or red when exposed to light. Your doctor can determine the type of illness you have and the proper treatments to use to treat it by determining whether the bacteria are Gram-positive or Gram-negative.Learn more about the gram staining with the help of the given link:
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What happens to the body when motor neurons are injured?
ANSWER:
Lesions are areas of damage to motor neurons. Damage to upper motor neurons stops the signals your muscles need to move. When your muscles don't move for a long time, they become weak and stiff. Over time, it can become harder to walk and control your movement.
Explanation:
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