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Gekata [30.6K]
3 years ago
10

There are 64 codons and 20 amino acids. which of the following is true.

Biology
1 answer:
arsen [322]3 years ago
7 0
A: several different codons can specify the same amino acid.
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A sonic boom is produced by a jet. What can you determine about the jet's motion?
IRISSAK [1]
"C" The only way something will make a shockwave or a sonic boom is if it's traveling faster than the speed of sound
6 0
3 years ago
An allosteric protein demonstrates a decrease in its Kg for molecule Y as the concentration of molecule X increases. Based on th
djyliett [7]

Answer:

X is negative heterotropic modulator

Explanation:

In allosteric regulations, modulators are molecules that causes a change in the conformation of an enzyme, hence, resulting a change in enzyme activity. It can lead to a decrease or an increase of the enzyme.  When a molecule decreases the enzyme activity it called a negative modulator, when it increases or activates the enzyme activity, it is called a positive modulator.

A positive or negative modulator can either be homotrophic (substrate acts as modulator) or heterotropic (another ligand acts as modulator).

In the example above, X is negative heterotropic modulator, because the modulator is different from the substrate and it also decreases the enzyme activity.

4 0
3 years ago
Assume that the left ventricle of a child's heart has an EDV=90mL, and ESV=60mL, and a cardiac output of 2,400 mL/min. His SV is
Sliva [168]

Answer:

SV = 30 ml/ beat.

HR = 80.

Explanation:

The formula to calculate SV is as follows:

SV = EDV- ESV.

Here EDV = 90ml (end diastolic volume), ESV = 60ml (end systolic volume) ans SV is stroke volume.

SV = 90-60

SV = 30ml/beat.

The formula to calculate HR is as follows:

HR = CO/SV

Here, HR is heart rate, CO is cardiac output = 2,400 ml/min and SV is stroke volume = 30ml/beat

HR = 2,400/30

HR = 80.

Thus, the SV is 30ml/best and HR is 80.

4 0
3 years ago
Somatic mosquito cells have 6 chromosomes. How many chromosomes do gametes have?
faltersainse [42]
<span>Somatic mosquito cells have 6 chromosomes. Its gamete has 3 chromosomes. 
</span>
Mosquitoes have 6 number of chromosome but when mosquitoes<span> make sperm or egg </span>cells<span>, meiosis reduces the </span>chromosome<span> number to 3.
</span>
*the chromosome number in somatic body cells of a mosquito --- 6.
<span>the haploid (n) number is 3.
the diploid (2n) number is 6.</span>
5 0
3 years ago
Which of these is happening when translation takes place?
beks73 [17]


The answer is B

Before the process of translation occurs, mRNA which bears the blue print or coded information for the synthesis of a specific protein arrives from the nucleus and into the cytoplasm where there are ribosomes

mRNA then attaches itself to a ribosome. The ribosome is the site where the protein is formed. It is sometimes referred to as the "work bench" of the cell. Once mRNA is attached, tRNA comes and begins to read and translate the coded information on the mRNA. This is the translation stage of  protein synthesis.

Based on the translated information, tRNA then fetches amino acids  from the pool of free amino acids found in the cytoplasm and brings them to the ribosome where they are joined to form a chain thus creating a protein.

5 0
3 years ago
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