Q: Define the following terms: Species, population, habitat, community, niche, ecosystem, biotic factors, abiotic factors, biome, biosphere, lithosphere, hydrosphere, and atmosphere

T cells are important to our immune system, but they do not release antibodies. They activate B cells and cytotoxic T lymphocytes to kill cells that are infected. Therefore, D is incorrect.

Antibiotics are not produced by our immune system. They can be found in nature or synthesized in labs. Therefore, B is incorrect too.

Lymphocytes are divided into T and B cells. B lymphocytes release antibodies that will recognize pathogens and bind to them, but T cells doesn't work like that. Lymphocyts does not recognize pathogens and C is incorrect as well.

B cells create antibodies, release them and they will bind to pathogens to neutralize them. Therefore, the correct answer is A. B cells release antibodies that neutralize the pathogen.

Answer:

She should immediately rinse or flush her eyes with water.

Explanation:

One of the most important precautionary measure to be taken when working with explosive chemicals in the laboratory is the use of safety goggles. However, in this case, Maria claimed that she could not see through the safety goggles and wore them on top of her head rather than over her eyes.

Maria accidentally splashed some chemicals into her eyes while trying to pour it into a beaker. The primary or initial response to this happening is to immediately FLUSH OR RINSE her eyes with water. This will flush away the chemical from her eyes before it can have its detrimental effect.

Answer:

proceed to the eye wash station, open her eyes, and rinse them for at least 15 minutes

Explanation:

a. Electrons are passed to oxygen molecules and water is produced: Aerobic respiration - Krebs Cycle and Electron Transport Chain

b. Glucose is broken down to form pyruvate molecules: Glycolysis

c. ATP is formed by chemiosmosis: Electron Transport Chain

d. Acetyl CoA reacts with oxaloacetate to form citric acid: Krebs Cycle

Answer:

That's True

Explanation: Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses. :)

The biological conversion of biomass to liquid fuels using yeasts is called fermentation (Option D).

Biomass refers to any organic matter that has accumulated energy from the sun in the form of chemical bonds. As a result, plant materials and organic waste become valuable sources of energy through the process of converting biomass to biofuels.

Biomass is used to produce a variety of products, including liquid biofuels. Biofuels produced from biomass are generally derived from plant materials, such as crops, agricultural wastes, or wood. Biofuels can be used for energy, transportation fuels, or chemical production.

There are several methods for converting biomass into liquid fuels, including fermentation, anaerobic digestion, pyrolysis, and gasification. Fermentation is a process in which microorganisms, such as yeast or bacteria, break down organic materials to produce ethanol, butanol, or other chemicals.

Thus, the correct option is D.

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in comparing changes in a normal sma doppler waveform before and after a meal, one would expect to see a change in waveform from a High to low resistance.

One would anticipate an increase in the peak systolic velocity and acceleration duration, as well as a drop in the resistance index when comparing changes in a typical SMA (superior mesenteric artery) Doppler waveform before and after a meal. This is due to an increase in blood flow to the gastrointestinal system following a meal, which helps with digestion and nutritional absorption. The SMA dilates and accelerates as a result of the increased blood flow, altering the Doppler waveform. Due to the reduced resistance in the arterial bed, the waveform could also exhibit a drop in diastolic velocity and a rise in end-diastolic velocity. The SMA Doppler waveform has undergone alterations that, overall, mirror the physiological reaction to the increased demand for blood flow to the gastrointestinal tract after a meal.

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Q-in comparing changes in a normal sma doppler waveform before and after a meal, one would expect to see a change in waveform from a_____.

Answer:

Cell

Nucleus

Chromosome

Gene

DNA

I'm assuming this is a true or false question, if that is the case, then your answer is TRUE

Answer:

Chromatin is responsible for gene expression.

Explanation:

Chromatin is responsible for gene expression because chromatin contains DNA that has all information about genes. chromatin controls the gene in order to form encoded products. DNA in chromatin send information to the RNA to produce specific types of proteins that are needed by the organisms for its growth and development so in that way the genes can be expressed in the organism.

Answer:

I CANT SEE THE FOLLOWING BUT I WILL EXPLAIN.

Explanation:

Plants usually absorb nitrogen from NO3- and NH4+

Nitrogen oxides released into the atmosphere by burning fossil fuels and organic matter is not a source of nitrogen which is available to plants. Thus, the correct option is D.

Plants require nitrogen as it is a macronutrient. The deficiency of this nutrient can cause many diseases. However, plants cannot themselves obtain the nitrogen from air but they rely mainly on the supply of combined nitrogen atom in the form of ammonia molecule, or nitrate molecule, resulting from the nitrogen fixation through free-living bacteria in the soil or the bacteria living symbiotically in the nodules on roots of legumes.

Plants can take nitrogen through absorbing the soil by their roots. Plants cannot get this nitrogen directly from the air. Although, the nitrogen element is abundantly available in air. Nitrogen is unreactive atom, and it cannot be used by the green plants to make proteins. Nitrogen gas needs to be converted into nitrate compounds in the soil through nitrogen-fixing bacteria in soil, root nodules or lightning. Every nitrogen atom is triple-bonded to another nitrogen atom to form the molecular nitrogen, N₂.

Therefore, the correct option is D.

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Your question is incomplete, most probably the complete question:

Which of the following is NOT a source of nitrogen that is available to plants?

A - Decaying plant matter

B - Animal waste products

C - Synthetic nitrogen containing fertilizers

D - Nitrogen oxides released into the atmosphere by burning fossil fuels and organic matter

Answer:

Thermometer measures temperature

Hygrometer measures humidity

Anemometer measure wind speed

Weather vane measure wind direction

Explanation:

The basic process of DNA replication is similar in prokaryotes and eukaryotes, but there are significant differences in the details of how replication occurs in these two types of organisms.

DNA replication is a fundamental process that is essential for the survival and reproduction of all living organisms.

While the overall mechanism of DNA replication is conserved between prokaryotes and eukaryotes, there are some key differences in the way that DNA replication occurs in these two types of organisms.

Here are some of the differences between DNA replication in prokaryotes and DNA replication in eukaryotes:

DNA polymerases: In prokaryotes, DNA replication is carried out by DNA polymerase III. In eukaryotes, DNA replication is carried out by multiple DNA polymerases.

Origin of replication: Prokaryotes have a single origin of replication on their circular chromosome, while eukaryotes have multiple origins of replication on their linear chromosomes.

Chromosome structure: Prokaryotes have a single circular chromosome that is not associated with histones, while eukaryotes have multiple linear chromosomes that are tightly packed with histone proteins.

Replication speed: Prokaryotes replicate their DNA much faster than eukaryotes.

Proofreading: Eukaryotic DNA polymerases have a built-in proofreading mechanism that can detect and correct errors in the newly synthesized DNA. In contrast, prokaryotic DNA polymerases do not have this proofreading ability and instead rely on a separate repair mechanism to correct errors after replication has occurred.

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Answer:

The answer is that they store oxygen in their blood, and in their muscles rather than in their lungs. Marine mammals have a very high blood to body volume ratio. The mammalian diving reflex allows mammals to lower their heart rate and ultimately survive submersion in water for extended periods of time.

Explanation:

The reason why blood volume played a vital role should be explained below.

In the case when the oxygen is stored in the blood & in their muscles instead of their lungs so this represents the role of blood volume. Also, marine mammals contain a high blood-to-body volume ratio. It permits the mammals for lowering the rate of heart and survive the submersion in the water for extension of the time. This is the main reason.

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Answer:

X and Y

these ur answer sir

Answer:

115.00 units of Volume ....

The main structural difference between kelp forests and salt marsh communities lies in the dominant organisms present, with kelp being the main component in kelp forests and salt-tolerant plants in salt marshes.

Kelp forests and salt marsh communities are two distinct marine ecosystems with unique functional and structural differences.

Structurally, kelp forests are dominated by large brown algae called kelp. These seaweeds have long, flexible stems or fronds that extend from the ocean floor towards the surface, forming a dense underwater forest. In contrast, salt marsh communities are dominated by salt-tolerant plants such as grasses, rushes, and sedges. These plants grow in intertidal zones, where they are periodically submerged and exposed to tidal action.

Functionally, kelp forests and salt marsh communities have different roles in their respective ecosystems. Kelp forests are known for their high primary productivity, meaning they convert sunlight into energy through photosynthesis. They provide habitat and food for a variety of marine organisms, including invertebrates, fish, and marine mammals. Kelp forests also play a crucial role in carbon sequestration, helping to mitigate climate change.

On the other hand, salt marsh communities act as important coastal buffers. They protect shorelines from erosion by dissipating wave energy and stabilizing sediments with their dense root systems. Salt marshes also provide vital nursery habitats for many fish and invertebrate species. Additionally, they act as filters, trapping and removing pollutants from water as it passes through.

Functionally, kelp forests are highly productive ecosystems that provide habitat, food, and carbon sequestration, while salt marsh communities act as coastal buffers, nurseries, and water filters. Both ecosystems play critical roles in marine environments and contribute to the overall health and balance of coastal ecosystems.

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Since women have about 20—30 percent less gastric alcohol dehydrogenase (ADH) secreted from their gastric mucosa than men, more ethanol enters the blood through a female's gastric lining.

Alcohol dehydrogenase is a critical enzyme involved in the metabolism of alcohol. This enzyme can help to break down alcohol molecules in the body and convert them into acetaldehyde, which is eventually transformed into carbon dioxide and water.The alcohol dehydrogenase enzyme is present in both the stomach and liver, but it is mainly produced in the stomach. The stomach produces alcohol dehydrogenase to begin the digestion of alcohol in the gastric lining.Since women have less gastric alcohol dehydrogenase (ADH) in their gastric mucosa than men, more ethanol enters the bloodstream through the stomach lining in women, resulting in a greater impact of the same quantity of alcohol consumed. This has a significant impact on women's susceptibility to alcohol-related illnesses and injuries.

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Answer:

Constitute means like make it work/control, i think. Im pretty sure

Answer:

Carbon Dioxide

Explanation:

google plus proof below I guess

please mark brainliest

Answer:

Sugar

Explanation:

Your body can convert sugars from the food you digest into molecules of glucose which are then used for cellular respiration. Plants on the other hand produce their own glucose through photosynthesis

Answer (option c):

Placer mining involves dredging sediments from the water bottom to extract minerals.

Placer mining involves dredging sediments from the water bottom to extract minerals.

These processes are based on a single principle: the difference in density between the components of the mixture. They are often used together to separate heterogeneous mixtures of two types: liquid + solid and immiscible liquids.

In this case we have what mixture is the sediments of stones and the water that through the sieve will separate one from the other.

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A decrease in predators and an increase in food would most likely result in an increase in genetic variation in a population.

What is genetic variation?

The difference in DNA sequence found in each of our genomes is referred to as genetic variation. We are all different from one another in terms of our hair color, skin tone, and even the shape of our faces due to genetic variance.

Mutation, chance mating, random fertilization, and recombination between homologous chromosomes during meiosis (which rearranges alleles within an organism's progeny) are all possible sources of genetic diversity.

Predators starve and die because they can't locate enough food when there are too many predators and not enough prey. The spread of illness and depletion of resources for prey species and other species living in their habitat are caused by an abundance of prey and a lack of predators.

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Answer:

C. a decrease in predators and an increase in food.

Answer:

The Pig-nose frog

Explanation:

Personally, I find these animals creepily amazing. The pig-nose frog goes by a few names, starting with purple frog, Indian purple frog, and pig frog. It looks mostly like a blob-fish then a frog, really. "The pig frog is green or grey-green in color, with brown or black blotching. It has fully webbed feet, a sharply pointed nose, and large tympana (eardrums). It is easily mistaken for various other species of the genus Litho-bates , with which it shares its geographic range, including the American bullfrog." "The body of the purple frog appears robust and bloated and is relatively rounded compared to other more dorsoventrally-flattened frogs. Its arms and legs splay out in the standard anuran body form. Compared to other frogs, purple frogs have a small head and an unusual, pointed snout."

Answer:

the answer is b.4NH3+5O2=4NO+H2O

Given what we know, we can confirm that the significant increase in oxygen in the Earth's atmosphere 2 to 2.5 billion years ago is due to cyanobacteria.

These are tiny bacterial organisms. They were amongst the first organisms to use photosynthesis to sustain life. The sudden boom of cyanobacteria accounts for the rapid increase in oxygen given that they will use carbon dioxide to produce sugar through photosynthesis, expelling oxygen in the process.

Therefore, we can confirm that the significant increase in oxygen in the Earth's atmosphere 2 to 2.5 billion years ago is due to cyanobacteria.

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The story The Man to Send Rain Clouds written by Leslie Marmon Silko is a short story about the culture and traditions of the Native Americans.

Here is the summary of the story using the strategy of Somebody Wanted But So Then: Somebody: A Native American community Wanted: To perform their traditional funeral rites for the dead member of their community, Teofilo But:

The Catholic priest in the village refused to allow them to perform the traditional rites for the dead man because he was a Christian. So: They decided to perform the Catholic rites for Teofilo but in their own way using their own traditions.

Then: The rain started to pour when Teofilo's body was being carried to the grave, and the community believed that Teofilo's spirit was finally happy and was sending them rain as a sign of his gratitude.

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Answer:

Explanation:

yes true the gravitational pull does ap

ply to all objects of the universe

Answer:true

Answer:

true

Explanation:

The endosymbiotic hypothesis is supported by several lines of evidence, including the presence of double membranes in certain organelles, the presence of their own DNA, and their ability to replicate independently within the cell.

The endosymbiotic hypothesis suggests that certain organelles found in eukaryotic cells, such as mitochondria and chloroplasts, originated from free-living prokaryotic organisms that were engulfed by ancestral eukaryotic cells.

This hypothesis is supported by several lines of evidence. Firstly, these organelles have double membranes, which could be a result of the engulfment process. The outer membrane is thought to represent the host cell membrane, while the inner membrane is believed to be derived from the prokaryotic membrane.

Secondly, mitochondria and chloroplasts possess their own DNA, which is separate from the nuclear DNA of the host cell. This indicates that they were once independent organisms with their own genetic material. Lastly, these organelles have the ability to replicate independently within the cell, similar to prokaryotes.

These pieces of evidence provide support for the endosymbiotic hypothesis, suggesting that certain organelles in eukaryotic cells have evolved from ancestral prokaryotes through a process of endosymbiosis.

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