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3 years ago

Which one is more biologically disruptive a point mutation or a frameshift mutation

Biology

1 answer:

AnnyKZ [126]3 years ago

7 0

Answer:

Frameshift

Explanation:

A point mutation can be insignificant due to the genetic code, many amino acids come from similar codons (where one base can be incorrect and it results in the same amino acid). If it does change the amino acid, having only one different amino acid in a whole polypeptide chain usually does not cause a major problem.

However, a change in the reading frame can be a major issue because it changes every codon form what it should be. A frame shift mutation can even prevent the translation of a protein entirely if it effects the start or stop codon.

Terribly articulated, but the answer is 100% frameshift

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Which choice ranks the elements hydrogen, carbon, nitrogen, and oxygen in order of decreasing dry mass in human cells a. O→C→H→N

True [87]

<u>Answer:</u> The order of decreasing dry mass in human cells is C→O→H→N

<u>Explanation:</u>

Dry mass of the element in human cells means the mass of elements which have lost all the water.

Human cells consist of many chemical elements. Some of them are: Carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), calcium (Ca), sulfur (S), potassium (K), sodium (Na), chlorine (Cl), magnesium (Mg) and many more.

Most abundant element found in the human cells is carbon.

The composition of the dry mass of the elements in human cells are:

Carbon = 47 %

Oxygen = 30 %

Hydrogen = 9 %

Nitrogen = 8 %

Phosphorus = 3 %

Sulfur + Potassium + Calcium + Sodium + Chlorine + Magnesium = 2 %

Other elements = 1 %

The decreasing order of dry mass of elements in human cells is:

$C>O>N>H$

Hence, the order of decreasing dry mass in human cells is C→O→H→N

4 0

4 years ago

When you swallow food, a flap of tissue called the ________________________ seals off your windpipe?

grigory [225]

The answer is Epiglottis!

5 0

3 years ago

3.PTC is non-toxic and does not occur naturally. Do you think there is a selective pressure that confers an advantage to those w

VikaD [51]

No there is no selective pressure that confers an advantage to those who do taste it.

Despite the fact that PTC isn't found in nature, tasting other bitter substances—many of which are toxins—that do occur naturally has a high correlation with taste sensitivity.

In order to defend themselves from being eaten, plants develop a range of harmful substances. Early humans developed the capacity to distinguish bitter tastes as a safeguard against ingesting dangerous plants. There are roughly 30 genes in humans that produce bitter taste receptors. People may taste a large variety of bitter substances because each receptor can interact with a number of different molecules.

Learn more about Taste with the help of the given link:

brainly.com/question/26220534

#SPJ4

4 0

2 years ago

Which method of heat exchange occurs during direct contact between the source and animal?

Gnesinka [82]

Answer:

conduction

Explanation:

It is the situation in which heat propagates through a "conductor" that is a heat source, responsible for transferring heat through contact. That is, with direct contact with the heat source a body can modify its thermal energy if there is heat conduction by another body, or another part of the same body. This process occurs in situations where heat exchange occurs during direct contact between the source, in this case "conductor" and the animal.

7 0

3 years ago

How many protons does this atom have?

sergij07 [2.7K]

D (7)
The protons are the ones marked p with a positive charge so you just have to count them up :)
Let me know if you have any questions

3 0

3 years ago