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4 years ago

What are the lipids that contribute to the structure and function of the cell membrane?

Biology

1 answer:

siniylev [52]4 years ago

7 0

Solution:

Phospholipid lipids is that contribute to the structure and function of the cell membrane.

Lipids all have one thing in common - they do not mix well with water. You can see this quite well if you try to combine oil and water. No matter how much or how hard you shake them together, they remain separated. This can be useful for organisms. For example, ducks produce lipids in their feathers, allowing the water to roll right off their backs and helping the ducks stay afloat.

Phospholipids are made up of two fatty acids (long chains of hydrogen and carbon molecules), which are attached to a glycerol 'head.' The glycerol molecule is also attached to a phosphate group, and this is the hydrophilic part of the molecule. The 'tail' ends of the fatty acid chains opposite the glycerol is the hydrophobic part of the molecule

The most important function for a phospholipid is to form the phospholipid bilayer. In this bilayer, the phospholipids are arranged so that all the hydrophillic heads are pointing outward and the hydrophobic tails are pointing inward. This arrangement comes about because the areas both outside and inside your cell are mostly water, so the hydrophobic tails are forced in.

THis is the required answer.

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Why did short plants reappear in mendel’s F2 generation?

Fudgin [204]

Answer:

Because the F1 plants all had a lowercase a/short plant allele, there was a 25% chance that two plants would contribute it to their offspring and they both did sometimes to make a aa offpsring.

Explanation:

All the F1 plants were heterozygous, so when they were crossed, the resulting genotypic ratio was 1 AA : 2 Aa : 1 aa. As you can see, this is the first time since the parent generation that there is a aa genotype and short plant phenotype, so that's why short plants reappeared.

8 0

2 years ago

A scientist discovers that a soil bacterium he has been studying produces an antimicrobial that kills Gram negative bacteria. Sh

nexus9112 [7]

The question is incomplete as it does not have the options which are:

resistant

semisynthetic

synthetic

natural

Answer:

Semisynthetic

Explanation:

Antibiotics are the microbial compounds which are obtained from the micro-organisms which are found effective against the bacteria as they act by inhibiting the activity of the bacteria which ultimately kills the bacteria.

These antibiotics can also be distinguished based on their synthesis: natural, semi-synthetic and synthetic antibiotics.

The semi-synthetic antibiotics are the antibiotics which are obtained from the microbes but are modified artificially by making chemical changes to increase the effectiveness of the antibiotic and making the antibiotic as broad-spectrum bacteria.

Since the properties of the antibiotics provided in the question are similar to the semi-synthetic antibiotics, therefore, is considered semi-synthetic bacteria.

Thus, Semisynthetic is correct.

4 0

3 years ago

3. Prokaryotic cells have membrane enclosed cell structures. O True O False

irakobra [83]

Answer:

False

Explanation:

Prokaryotic cells lack a membrane enclosed nucleus and organelles.

3 0

3 years ago

Which of the following is the best reason to protect a section of an oak forest?

Alla [95]

Answer:

The correct option is D) to maintain the diversity of the living environment

Explanation:

Forests, such as the oak forest, are of utmost ecological importance as they are rich in wild-life animals and plants. They biodiversity in such areas is huge as there are different types of plants and animals living here. Even if we have to cut down a forest, we should try to protect a section of it so that all this huge biodiversity is not lost. Cutting down the whole oak forest will result in no habitat for the different animals that lived there. As a result, many species of organisms might become extinct.

3 0

3 years ago

Read 2 more answers

A needle-exchange program focused on a neighborhood with a high number of intravenous drug users is an example of _____ preventi

alex41 [277]

Answer:

Secondary

Explanation:

There are several levels of prevention. You might confuse this with primary prevention. Primary prevention is preventing infection, so it has to be done before the patient caught the disease.

The needle-exchange program aims to reduce the spread of blood-borne disease(HIV, hepatitis, etc) from the multiple usages of the same needle. Since the disease already exists, this will be secondary prevention.

7 0

3 years ago