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3 years ago

What is the role of pollen grains in fertilization process?

1 answer:

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As the pollen tube penetrates the ovule, it releases two sperm cells. ... As in gymnosperms, the ovule becomes a seed, encasing the embryo and endosperm in a seed coat. But unlike gymnosperms, in angiosperms the ovary containing the ovules develops into a fruit after fertilization

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The large population of microbes that contribute to the gut microbiota and have an important role in food processing are called:

postnew [5]

The large population of microbes that contributes to the gut microbiota and have an important role in food processing are called <u>Commensal microorganisms</u> .

The human body is host to trillions of microbes or bacteria. Most of these are useful but may become harmful when out of control.

The microbiota consists of a wide variety of bacteria, viruses, fungi ,and other microorganisms present in a singular environment such as the human digestive tract.

<h3>Gut microbiota : </h3>

The gut microbiota is vast and complex collection of microorganisms that profoundly affects human health gut microbiota are present in the digestive tract of vertebrates including humans.

The function of gut microbiota in body function includes harvesting energy from digested food, protecting against pathogens, regulating immune system and strengthening biochemical barriers of the gut and intestine changes in microbiota composition can affects these functions.

The normal gut microbiota have specific functions like host nutrition metabolism, maintenance of structural integrity of the gut mucosal barrier, helps in immunity, protect against pathogens.

<h3>Commensal microorganisms:</h3>

Commensal microorganisms are those type of microbes that reside on either surface of the body or at mucosa without harming human health . commensal bacteria are 10 times more than the cells present in our body.

Example - Streptococcus oralis and Streptococcus salivarius .

Commensal microorganisms plays an important role against pathogens including respiratory pathogens. It acts on the host's immune system to induce protective response that prevents colonization an invasion by pathogens. On the other hand these bacteria can directly inhibits the growth of respiratory pathogens by producing antimicrobial products .it also competing for nutrients and adhesion sites. Provides the host with essential nutrients.

<h3>What are microbes ?</h3>

Microbes are tiny living things that are found all around us and are too small to be seen by eye. They live in soil, water and in air. The human body is the home of trillions of microbes.

Learn more about Commensal microorganisms here:

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2 years ago

Fat and atp are different molecules tgat store energy compare the functions of these molecules in terms of energy storage

Julli [10]

Answer:

Fats and ATP are both energy molecules.

ATP is the source of energy which is directly used by each cell to carry out different functions. All cells use energy in the form of ATP. The mitochondria makes ATP by the process of cellular respiration whenever it is required by the body. ATP is not a stable molecule hence energy cannot be stored in this form.

Fats are long term energy storage molecules. Fats are stable molecules hence they can be used for long term energy storage.

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3 years ago

The mass of chewed food that is swallowed is called

Tanya [424]

That would be called <span>Defecation.</span>

7 0

3 years ago

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In the US, there are existing state laws to protect individuals from genetic discrimination in what areas? Select all that apply

bonufazy [111]

Answer:

In the United States there are existing state laws to protect people from genetic discrimination in areas such as insurance companies and workplaces.

Explanation:

Genetic discrimination is based on the possibility that an individual manifests a disability or inherited disease due to a genetic alteration.

In many cases, both workplaces and insurance companies require genetic testing before granting a job or an insurance policy.

A federal law - Genetic Information Nondiscrimination Act or GINA - protects people against this requirement of their future employers or any insurance company and guarantees, with certain exceptions, the possibility of obtaining a job or medical insurance.

Learn more:

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3 years ago

When a bird eats a small insect it can be considered a secondary consumer but what is the bird considered as when it eats seeds?

IRISSAK [1]

If the bird eats a small insect that ate the seeds and is a Secondary consumer, then it was relying on another organism for food. Where as the Primary consumer eats what grows and doesn't really on another organism for food. So the answer would be Primary Consumer.

5 0

4 years ago

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