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frutty [35]
3 years ago
7

In cells, genes are segments of DNA that code for proteins; not sugars or complex carbohydrates, or lipids, but proteins. The co

de in the sequence of nucleotides in a gene specifies the sequence of nucleotides in messenger RNA which in turn specifies the sequence of amino acids in a protein. The sequence is variable because of mutations which can change the sequence of amino acids in the protein coded for by that gene. Therefore, in evolution, a change in a single code for a single amino acid may have an effect on individual survival. Proteins carry out many functions in a cell such as:
Biology
1 answer:
Evgesh-ka [11]3 years ago
5 0

Answer:

Explanation:

Proteins are involved in almost every function of cell and inside the body and each protein is specific for its role. Some of them are  

1) Protein constitute major part of structure of cell. Proteins are major constituent of cell membrane along with lipids.  

2)  Enzymes which are proteins in nature catalyze all the important chemical reactions inside and outside the cell e.g transporting material across the cell, synthesizing and repair of DNA

3) Hormones which are proteins play important role in the regulation of metabolic reactions inside the cell

4)  Regulation of cell division is performed by DNA-associated proteins  

5)  Proteins plays important role in storage of iron inside the cells

6) Proteins can be stored as fats inside the body and used as energy when needed by cells for its metabolic activities.  

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Researchers argue that some bacteria found in the human gut are in a symbiotic relationship with humans, called mutualism. Which
Rama09 [41]

Answer:

Bacteria provides vitamins to humans

Explanation:

The correct answer would be that bacteria provides vitamins to humans.

<u>By definition, mutualism is a type of symbiotic relationship between two organisms in which both benefit from each other.</u>

Bacteria in the gut of humans that provides vitamins to humans also benefit by making the human gut their shelter. While the vitamins represent an important nutrient to humans for their proper functioning, the shelter is also necessary for the bacteria for their safety.

<em>Hence, the observation that bacteria provide vitamins to humans is consistent with the argument of researchers that some bacteria found in the human gut are in a mutually beneficial relationship with humans.</em>

6 0
3 years ago
The biggest engineering challenge of today is:
Anna71 [15]

Answer:

A. would be the correct answer

6 0
3 years ago
2.) Unlike photosynthesis, cellular respiration occurs in
slavikrds [6]
<span>Answer is letter D which is “all eukaryotic cells”. The cellular respiration occur in all eukaryotic cells has a metabolic reaction and processes that happens in the cells of an organism to change it into a biochemical enegergy unlike photosynthesis it only occurs in cells having chloroplast</span>
7 0
3 years ago
Can you determine which instances reflect a valid experiment or conclusion? Check only those that are valid.
vagabundo [1.1K]

Answer:

Only options a reflects the instances with valid experiment or conclusion.

Quality of any experiment depends upon two things reliability and validity. Reliability is measure of regeneration of results every time an experiment is performed under specific conditions.

Validity is measure of accuracy of results of an experiment. It can be check by two ways: internal validity (checks the design of the experiment) and external validity (checks if the conclusion is the real explanation of the phenomenon).

Now, in marine biologist experiment, he concluded the results only after one breeding season. This makes his results unreliable as it might have happened by chance.

Similarly, in cola experiment the taste was only checked by one candidate i.e. Karl. He might have problem in his taste buds. In addition, the temperature of cola can also affects its taste which is not taken care of in the experiment. Hence, it is not the valid experiment.

Similarly. Jeanette could use more plants for her experiment and Robert just followed only one instruction. He didn't perform any experiment.

8 0
3 years ago
Assume that a mutation occurs in the gene responsible for the production of hexosaminidase a, such that only about 50% of the en
zysi [14]

This statement is true.

In the case of autosomal dominant disease, the person is either homozygous (which is very rare) or heterozygous. On the molecular level, either the mutation produced a new deleterious protein for the organism, or the mutation affected an existing protein in the physiological state and that a 50% activity is not enough to compensate for the needs. of the body.

In case of autosomal recessive disease, the sick person is always homozygous. If the two loci each have a different mutant allele, it is called a "composite heterozygote". People with autosomal recessive inheritance disorder have "mandatory heterozygote" parents.

5 0
3 years ago
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