PLEASE HELP, WILL MARK BRAINLEST
The first form of life on Earth was created from
atmospheric gases.
green plants.
reproducing molecules.
living fossils.
Answers
Related Questions
Through which blood vessels does deoxygenated blood flow to reach the
lungs from the heart?
A. The pulmonary arteries
B. The coronary arteries
C. The coronary veins
D. The pulmonary veins
Answers
Through the pulmonary arteries blood vessels does deoxygenated blood flow to reach the lungs from the heart. Therefore, option A is correct.
What is pulmonary artery ?The pulmonary arteries carry deoxygenated blood to the lungs for oxygenation from the right side of the heart. These blood veins act as a passageway between the lungs and the right side of the heart.
In contrast to the left pulmonary artery, the right pulmonary artery delivers blood to the right lung. In relation to the ascending and descending aortas, the right pulmonary artery runs anteriorly. Prior to the right mainstem bronchus, it is located.
Blood travels through the pulmonary arteries from the heart to the lungs. They are the only arteries in your body that transport blood that is low in oxygen (deoxygenated).
Thus, option A is correct.
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III.) Dating sites and artifacts can be tricky. Archaeologists have to look at a lot of
evidence before making conclusions about a site and its artifacts. They cannot always
determine a definite date, so they will use the word circa. Circa means around or
approximately. So if a site is said to be from circa 1750, it means that it dates from
approximately 1750. Try to answer the questions below based the evidence provided.)
Bottles A & B were recovered from a privy (outdoor toilet) located on a
farmstead site.
Animal bones, broken ceramics, and other items were also found in the
privy.
Bottle A has no seams.
The other recovered artifacts from the privy indicate a date of circa 1918.
The first bottle-making machine was patented in 1903. By 1910 most bottles
were made in these machines.
Based on research and interviews the archaeological team knows that the
site was occupied by the Richardson family between 1890-1935 and then
abandoned.
Bottle B has seams indicating it was made by a bottling machine.
11.) What do the contents of the privy tell you about it?
12.) When was the Bottle A made? (Hint: Use the terminology of relative dating)
13.) When was Bottle B made?
14.) Why could Bottle A have been found in a privy dating from circa 1918?
Answers
Answer:
11. That the privy was used in the late 1800's - early 1900's
12. Circa 1890's
13. Circa 1918
14. Because the family could have used the privy prior to 1918. The family owned the land from 1890 - 1935, so it would be possible for objects from the 1890's to the 1930's to be present in the privy.
Modern scientists can splice DNA from different species together to produce what is referred to as ______ DNA.
Answers
Answer
Recombinant DNA. a genetic material that has been spliced together from multiple types of organisms. Transgenic organism. an individual that receives recombinant DNA
Explanation:pa brainliest asnwer po
part a during mendel's lifetime most people believed in the blending theory of inheritance which said that offspring were a blend of their parents traits. mendel's systematic crosses allowed him to replace the blending theory with the particulate theory of inheritance which says that traits are passed on because discrete units of inheritance, we now call genes, are passed on. in the twentieth century the discovery of what type of inheritance initially seems to support the blending theory in the f1 generation of a cross, but then disproves the blending theory and supports mendel's particulate theory in the f2 generation when some individuals exhibit the original parental phenotypes? during mendel's lifetime most people believed in the blending theory of inheritance which said that offspring were a blend of their parents traits. mendel's systematic crosses allowed him to replace the blending theory with the particulate theory of inheritance which says that traits are passed on because discrete units of inheritance, we now call genes, are passed on. in the twentieth century the discovery of what type of inheritance initially seems to support the blending theory in the f1 generation of a cross, but then disproves the blending theory and supports mendel's particulate theory in the f2 generation when some individuals exhibit the original parental phenotypes? the discovery that there can be more than 2 alleles for a gene. the discovery that one gene can produce many different proteins. the discovery of incomplete dominance
Answers
An old biological notion from the 19th century is called blending inheritance. According to the hypothesis, a kid receives a trait by averaging the values of its parents for that trait.
As an illustration, pink-flowered children might result from breeding a red flower variation with a white variant of the same species. Inheritance was blended according to Charles Darwin's idea of inheritance via pangenesis, which included contributions to egg or sperm from every organ of the body.
Fleeming Jenkin attacked Darwin's theory of natural selection because of his dependence on this mechanism, arguing that blending inheritance would average out any unexpected advantageous property before selection had a chance to work.
The widespread acceptance of particulate inheritance led to the rejection of blending inheritance.
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Which of the following statements are true about mutations??
1-Mutations are random
2-Mutations are mostly beneficial
3-Mutations can occur in both DNA and RNA
for an organism
4-Mutations can only occur during interphase.
5-Not all DNA codes for proteins
6-Not all genes are turned on or activated
7-Substitution mutations typically result in frameshift
8-Mutations can be genetically inherited
Help!
*I think it is 1-2-4-5-7-8
Answers
Mutations can happen in every stage of a cell cycle. Also most DNAs code for functional RNA not proteins. And only some mutations are beneficial not Mostly. Pay attention on the fact that in one cell we have complete set of genes but only a few of them express ( activated)
Mutations are mostly random, Mutations may be found in DNA and RNA, Not all the DNA codes for the proteins, some genes are turned on or activated, Substitution mutations typically result in a frame-shift, They can be genetically inherited.
A mutation is an alteration in the genome of the organisms and may be formed in the RNA or the DNA. These can result from the changes in the genetic make up of the genes. They may also prevent the genes from functioning. Mutation is a process that involves the duplication in DNA through the genetic recombination. A type of genetic engineering.Hence these mutations are random, occurring both in DNA and RNA. Leading to changes in genetic codes and not all genes are activated. Some are inherited. Thus the correct statements are 1, 3, 5, 6, 7, 8.
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Mary decided she wanted to experiment with the color of her white roses. She placed
four roses in four different vases. Mary decided to put a different color dye in each
vase. The next day she checked each vase and noticed that the white petals turned into the color of the dye placed in the vase. What two properties of water work together to get the colored dye up to the flower petals?
A : cohesion and adhesion
B : cohesion and specific heat
C : hydrogen bonding and adhesion
D : specific heat and hydrogen bonding
Answers
Answer:
A : cohesion and adhesion
Explanation:
Can someone help? 40 points <3
Answers
Answer:
Please see following
Explanation:
Step 1: glycolysis
cuts glucose in half to create pyruvate
makes 2 atp
step 2:
If oxygen is available, then process: cellular respiration
occurs in the: mitochondria
is oxygen is not available, then: process- fermentation
which does not use oxygen so: anaerobic
occurs in the: cytoplasm
occurs in yeast cells products: alcohol
occurs in muscle cells: lactic acid
hope this helps!
Which is a point mutation and not a frameshift mutation?
Answers
Answer:
b
Explanation:
Answer:
D) silent
Explanation:
Just took the test.
The “Rule of 10” states that as little as ________ % of the energy at any trophic level is transferred to the next trophic level.
If I am a higher trophic level organism, this means that I need to eat MORE / LESS (circle one) food in order to fulfill my energy needs.
The majority of the energy is lost as ________________ through the completion of metabolic processes.
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Answer:
1) "Rule of 10" states that as little as 10% of energy is transferred
2) Higher trophic level organisms need to eat MORE food, as energy is lost between trophic levels
3) The majority of the energy is lost as heat
The fruiting body found above ground in fungi is called the
A. cap.
B. hyphae.
C. mycelium.
Answers
Answer:
fruiting body is called cap
The mycelium is the fruiting body found above ground in fungi.
The pileus is the technical name for the cap, or cap-like part, of a basidiocarp or ascocarp (fungal fruiting body) that supports a spore-bearing surface, the hymenium.
A hypha is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium.
A mycelium is a network of fungal threads or hyphae. Mycelia often grow underground but can also thrive in other places such as rotting tree trunks. A single spore can develop into a mycelium. The fruiting bodies of fungi, such as mushrooms, can sprout from a mycelium.
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Can anyone tell the answer
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The sodium-potassium pump is involved in active transport that moves 3 sodium ions from the cell for every 2 potassium ions it moves into the cell. Which of these best explains why energy is needed for active transport?.
Answers
Answer:
The sodium-potassium pump is an active transporter because it needs to move sodium and potassium ions against the concentration gradient.
Explanation:
You have to think of it as outside vs inside the cell.
Outside the cell, you have 5mM K and 150mM Na. Inside the cell, you have 100mM K and 10mM sodium. Without the transporter then the ions would go from greater concentration to lower concentration. Energy keeps the ions going from the way they would naturally happen.
How many chromosomes would you expect to be in the daughter cells of the mosquito after meiosis? When starting with 6
Answers
Answer:
The correct answer would be - three chromosomes.
Explanation:
Meiosis is the type of cell division that takes place in only sex cells and called reduction division as a single parent cell divide into four daughter cell that contains a half number of chromosomes as the parent cell.
The daughter cells are always haploid and have the half number of chromosomes. If an organism has 2n number of in its parent sex cell the daughter cells after meiosis will have n number of chromosomes
Therefore, mosquito = 2n = 6
after meiosis = n = 6/2 = 3
Thus, the correct answer would be - 3 chromosomes.
Which labels would correctly model photosynthesis?
Answers
Answer:
A. Carbon dioxide
B. Light energy
C. Oxygen
D. Glucose
E. Water
Explanation:
The model for photosynthesis is the sun in the form of solar energy where the carbon dioxide along with gets formed in the leaves where it is kitchen of the leaves along with the carbon dioxide gets removed out.
What is the primary source of energy ?The primary source of energy is the sun which will help in the production of biomass.
A. Carbon dioxide
B. Solar energy
C. Oxygen
D. Stomata
The photosynthesis is the unit where the solar energy is the producers energy used by the producers. Carbon dioxide is the gas that is the used to the plants that is synthesizing plants food.
Leaves have the stomata where the food is being synthesized where the chlorophyll containing pigment is helpful in making where the food is being synthesized.
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When you change the amounts of greenhouse gases in the atmosphere, which factor(s) do you expect to change? (Circle your answer/answers.)
Heat flow in
Heat flow out
Temperature
Answers
Answer:
B-Heat flow out
Explanation:
When you change the amount of greenhouse gases the factor you expect to change is Heat flow out.
What is greenhouse gases?
The main greenhouse gases whose concentrations are rising are carbon dioxide, methane, nitrous oxide, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and ozone in the lower atmosphere.
How many greenhouse gases are there?
There are ten primary GHGs; of these, water vapor (H2O), carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are naturally occurring.
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Before a plant grown in a greenhouse can be planted in a field or garden, it should first be ______off.
Fill in the blank please.
Answers
Answer:
hardening off
Explanation:
globular proteins have a round shape and are soluble in water (the cytoplasm and bloodstream). why do you think that antibodies are globular, rather than fibrous?
Answers
Antibodies are globular because they are small proteins that need to bind to specific antigens, and their shape is important for allowing them to do this effectively. The globular shape allows them to be soluble in water, which makes it easier for them to travel through the bloodstream and to the cytoplasm.
The globular shape also makes it easier for the antibodies to recognize and attach to their corresponding antigens. Additionally, the globular shape also gives antibodies a larger surface area, which helps them to be more effective in binding to the antigens.
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If a scientist wants to understand the effects of a drug on a large population, she would study the patterns.
from a small sample. True or false
Answers
Answer:
true
Explanation:
they would do this so if the drug is not good for the health not a lot of people or the things they used to study will get affected
What is the average cropland fraction for the small farms?
A) 10%
B) 25%
C) 50%
D) 75%
Answers
The average cropland fraction for the small farms is option B) 25%.What is cropland fraction? the correct option is B) 25%.
Cropland fraction is the percentage of land used for crops or agriculture. Cropland fraction is calculated as follows: Cropland fraction = (cropland area/total land area) × 100%.Cropland fraction for small farmsCropland is land that is mainly used for agricultural production. The average cropland fraction for small farms varies according to the size of the farm. Small farms usually have a higher percentage of cropland. The average cropland fraction for small farms is around 25%.
The average cropland fraction for small farms can vary depending on the specific region and agricultural practices. However, without further information or context, it is not possible to provide an accurate average cropland fraction for small farms.
The percentage of cropland can be influenced by factors such as farm size, location, climate, crop types, and farming techniques. It can range widely from less than 10% to more than 75%, depending on these variables.
Therefore, without specific information or a defined context, it is not possible to determine the average cropland fraction for small farms.
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Which best describes a possible negative impact of irrigation of farmland?
Answers
Answer: Food can be produced in dry areas. Increased runoff can pollute bodies of water. Food can be produced through drought years. Water can improve the livelihood of farmers.
Answer:
B. Increased runoff can pollute bodies of water.
Explanation:
describe the relationship between photosynthesis and cellular respiration in relation to the movement of carbon between plants and animals.
Answers
Answer:
cvvxxgvxcbbn vcbbgccccccccnc
Drag each label to the correct location on the image.
A diagram of an animal cell is shown below. Each arrow points to a different organelle. Correctly label each organelle.
ribosome
centriole
smooth
endoplasmic
reticulum
mitochondrion
cell
membrane
rough
endoplasmic
reticulum
PRO
Golgi
apparatus
nucleus
Answers
The label on the animal cells for each organelle is attached below.
What makes up an animal cell?Cell membrane: The cell membrane is the outer layer of the cell. It protects the cell from its surroundings and controls what enters and leaves the cell.
Rough endoplasmic reticulum: The rough endoplasmic reticulum is a network of membranous sacs that are dotted with ribosomes. The ribosomes are responsible for making proteins.
Ribosome: Ribosomes are small organelles that are responsible for making proteins. They are found free in the cytoplasm or attached to the rough endoplasmic reticulum.
Golgi apparatus: The Golgi apparatus is a stack of flattened sacs that are involved in processing and packaging proteins.
Mitochondrion: The mitochondrion is the "powerhouse" of the cell. It produces energy in the form of ATP.
Centrosome: The centrosome is a small structure that contains two centrioles. The centrioles are involved in cell division.
Smooth endoplasmic reticulum: The smooth endoplasmic reticulum is a network of membranous sacs that are not dotted with ribosomes. The smooth endoplasmic reticulum is involved in a variety of functions, including lipid synthesis and detoxification.
Nucleus: The nucleus is the control center of the cell. It contains the cell's DNA, which is the genetic material.
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Why is there limited vegetation in the tundra?
Answers
Answer:
Frigid temperatures, etc.
Explanation
The tundra has very low temperatures and a layer of permafrost over the soil. It has characteristics similar to the desert and it also has a short summer and a long, freezing winter. Therefore, there are not many flora variations that can thrive in that biome.
Answer:
The tundra experiences little rainfall, which makes the soil devoid of nutrients. The soil is permafrost, or permanently frozen. Both of these factors make it difficult for plants to grow in the tundra.
Explanation:
edge 2020
if a cockatoo is not eating or preening himself, is standing tall with his feathers slicked tight to his body, and has his eyes open wide and his beak slightly open, he is showing fas level: 0
Answers
The cockatoo's behavior indicates a FAS level of 0, suggesting a state of calmness or relaxation.
What does it mean when a cockatoo exhibits FAS level: 0?When a cockatoo is not eating or preening, stands tall with feathers slicked tight to its body, and has wide-open eyes with a slightly open beak, it is displaying FAS (Feather Adrenaline Syndrome) level: 0.
FAS is a term used to describe a range of behaviors and physical signs observed in cockatoos, primarily related to stress and anxiety. FAS level: 0 indicates a relaxed and calm state of the bird. The described posture and behavior, such as standing tall, tight feathers, open eyes, and slightly open beak, signify a non-agitated state.
Understanding and interpreting the various FAS levels and associated behaviors are crucial for caretakers and bird enthusiasts. It helps in assessing the well-being and emotional state of the cockatoo, providing insights into their comfort levels and responses to their environment.
Feather Adrenaline Syndrome (FAS) is a complex condition observed in cockatoos and other parrots, resulting from various environmental stressors and psychological factors.
Recognizing the different FAS levels and their corresponding behaviors aids in addressing the bird's emotional needs, implementing appropriate environmental enrichment, and minimizing potential stressors. Further research and education on FAS contribute to the welfare and optimal care of cockatoos, promoting their mental and physical health.
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Wave A completes 4 cycles in 2 seconds. Wave B completes 6 cycles in 1 second. Which wave, A or B, has the higher frequency?
Answers
Answer:
Explanation:
Wave B
Choose each statement that is scientific.
Ocean tides are caused by the uneven gravitational pulls of the Moon and Sun on different parts of Earth.
Human life is more valuable than other forms of life on Earth because humans are more intelligent than other organisms.
The universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago.
The opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on Earth.
Answers
The statements that is scientific are:
Ocean tides are caused by the uneven gravitational pulls of the Moon and Sun on different parts of Earth.
The universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago.
A scientific statement is one that is supported by several studies, experiments, and quantifiable and empirical data from the experiment.
Random people's opinions have no bearing on scientific theory.
Science does not support the comparison of human intelligence to that of other life forms. For the world to be properly maintained, the entire biodiversity is necessary.
The scientific statement must be capable of being refuted. This indicates that they could be put to the test; there must be some conceivable observation that could prove them false or wrong. A tautology is a sentence that is unavoidably true. is therefore not scientific.
An official ADA point of view or position that may or may not include therapeutic or research advice is referred to as a scientific statement. Scientific statements provide an academic summary of a diabetes-related subject. Reports from work groups fall under this category.
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Place A and B recieve the same amount of rainfall. Place A has a lot of concrete surfaces and roads. Place B had fewer concrete surfaces and more open areas such as playground and parks. Explain the diffrence between the water tables in place A and place B
Answers
The water table in B is greater than the water table in A.
What is the water table?We know that the water table would have to do with the level of the water that can be found under the ground. The water table is formed from the amount of the water that can be bale to get into the ground from the surface of the ground.
Now, we know that if the ground of the place is made up of concrete then there would be less water that would penetrate the ground and then the water table of the place would be found to be lower than those of open areas.
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This is the recording of data or information gathered while doing the experiment? Observations Analysis Hypothesis
Answers
Observations is the recording of data or information gathered while doing the experiment.
Observations refer to the recording of data or information gathered while conducting an experiment. It involves using the senses or instruments to collect data and noting down relevant details or measurements. Observations can be qualitative (descriptive) or quantitative (measurable) and provide the raw data for analysis and interpretation.
Analysis, on the other hand, involves the processing and interpretation of data to draw meaningful conclusions and identify patterns, trends, or relationships. It often includes statistical calculations, graphing, and other techniques to derive insights from the collected data.
Hypothesis is a proposed explanation or prediction based on prior knowledge or observations. It is an educated guess that serves as a starting point for investigation and experimentation. While the hypothesis guides the experiment, it is not specifically related to the recording of data or information during the experiment itself.
The correct question is:
This is the recording of data or information gathered while doing the experiment?
1. Observations
2. Analysis
3. Hypothesis
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Which molecules are distinctively different in Bacteria and Archaea?
Transfer DNA
RNA polymerases
Fatty acids
Transcription DNA
Answers
Answer:
RNA polymerases
Answer:
2nd option
Explanation:
what is the green house effect?
Answers
Answer:
The green house effect is the purpose of radiation from a plant's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere.