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Minchanka [31]
3 years ago
6

Life as we know it depends on the genetic code: a set of codons, each made up of three bases in a DNA sequence and corresponding

mRNA sequence, that specifies which of the 20 amino acids will be added to the protein during translation. Imagine that a prokaryote-like organism has been discovered in the polar ice on Mars. Interestingly, these Martian organisms use the same DNA → RNA → protein system as life on Earth, except that there are only 2 bases (A and T) in the Martian DNA, and there are only 17 amino acids found in Martian proteins. Based on this information, what is the minimum size of a codon for these hypothetical Martian life-forms?
Biology
2 answers:
Bogdan [553]3 years ago
6 0

Answer:

The correct answer is "5".

Explanation:

The easiest way to determine the number of possible codons, is to establish a number with two digits "xy", where the digit "x" refers to the number of bases, and the number "y" to the number of bases per codon. Given that the Martian proteins are formed with only 17 amino acids, the number "xy" must be at least 17. In this case, the minimum size of a codon is 5, which will give the number "xy" 25 (greater than 17), and also will give enough combinations of codon to translate for the 17 amino acids (32, result of calculating 2 raised to the power of 5).

yawa3891 [41]3 years ago
4 0

Answer:

5

Explanation:

2*2*2*2=16 not enough to code for the 17 aminoacids, 2*2*2*2*2=32 so it is more than enough  

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Answer:

linker DNA

Explanation:

the classic beads on a string structure is termed as the nucleosome; which is the most basic level of chromosome packaging. the nucleosome is made up of 2 molecules each of the four histone proteins (H2A, H2B, H3, H4) to form an octamer around which a length of DNA is wrapped. linkage of this nucleosome to another nucleosome is done by a length of linker DNA and a linker histone (H1). thus experimentally to produce this structure, the linker DNA between two nucleosomes is degraded by nucleases to extract the structure. thus the linker DNA is not retained after the experiment.

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3 years ago
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amid [387]
One characteristic is that they make energy
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3 years ago
Do you think that a high-sodium diet could damage the body over time? Why or why not?
kodGreya [7K]

Answer:

A high-sodium diet could damage the body over time as it may cause hypertension, heart failure, kidney disease, stroke etc.

Explanation:

Human body needs a small amount of sodium to perform functions like maintaining the proper balance of water and minerals, nerve impulse transmission, and contraction and relaxation of muscles. It requires about 500 mg of sodium daily to perform these important functions.

But a high-sodium diet can lead to hypertension (high blood pressure), heart disease, kidney disease and stroke.  It can also cause depletion of calcium from the bone resulting in osteoporosis. Excess sodium in the blood causes the body to hold onto more water to dilute the sodium, which increases the amount of fluid surrounding the cells and the volume of blood in the bloodstream. The increase in blood volume causes more pressure on the blood vessels and the stiffening of blood vessels, which leads to high blood pressure (hypertension) and more work for the heart. This causes more burden to the heart resulting in heart attack and stroke.

Commercially processed foods like bread, pasta, soups, chips etc contains high sodium than naturally processed food like fruits, vegetables, whole grains, nuts, dairy products etc.

The ideal intake amount of sodium for a normal, healthy individual is 2,300 mg per day. For persons having high blood pressure or cardiovascular disease, the recommended amount is 1500 mg or less per day.

5 0
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alexandr1967 [171]

Answer:

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Dependent variable is the effect that is being measured in an experiment while independent variable is the cause of that effect. Hence, dependent variable is not controlled or changed.  

According to this question, height of the plants is the effect of the amount of ammonium nitrate and light. Hence, it defines the output or end result of the variation that is being studied.

5 0
3 years ago
I will give brainliest!!! Which of the following statements correctly matches a cell part with its function? Choose 1 answer: (C
jeka57 [31]

Answer:

the answer is B

B.The lysosome digests old cell parts

Explanation:

B is the right answer

7 0
3 years ago
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