Explain why a silent mutation might not affect the protein for which it codes

1 answer:

7 0

Codons that code for the same amino acid are termed synonyms, Silent mutations are base substitutions that result in no change of the amino acid or amino acid functionality when the altered messenger RNA (mRNA) is translated.

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Sort the phrases into the appropriate bins depending on whether they are true only for channels, true only for carrier proteins,

ehidna [41]

<h2>The correct answer is explained below:</h2>

Explanation:

The Plasma membrane of a cell is made up of a phospholipid bilayer which has a hydrophobic core and hence is impermeable to water soluble or polar organic and inorganic molecules.
However, a cell can maintain proper homeostsis and undergo metabolism only when it is able to exchange different hydrophilic and polar organic and inorganic chemical components present inside the cell with those present outside the cell.
This necessitates the development of a "path" that could connect the cell interior to the cell exterior.
The path is developed by integral membrane protein that spans across the lipid bilayer opening on either side of the membrane, thereby connecting the cell interior with the cell exterior.
These integral membrane proteins are amphipathic in nature, that is, they are composed of both polar and non-polar amino acid residues. The amino acid residues are arranged such that the non polar amino acid residues face and undergo hydrophobic interactions with the water avoiding lipid molecules in the plasma membrane. The polar amino acid residues face towards the lumen of the opening in between the cell interior and exterior such that they can form hydrogen bonding with the water soluble polar organic or inorganic molecules and help them traverse the plasma membrane.
These integral membrane proteins are of two types: Channel proteins and Carrier proteins.
The Channel proteins:

Form a direct and continuous opening across the plasma membrane. They can either remain always open or can be gated, that is, they open only on associating with specific signalling molecules.
They transport solutes from a region of high electrical charge or concentration to a region of low electrical charge or concentration, that is, down the electrochemical or concentration gradient.
They usually allow the easy and quick transport of water molecules and small ions across the membrane.

The Carrier proteins:

They undergo a change in their conformation to translocate solute molecules across the plasma membrane and they do not form a continuous opening.
When they open on one side of the membrane they are closed on the other side. They cannot remain, simultaneously, open on both sides of the membrane.
They are required mainly for the translocation of small polar organic molecules across the plasma membrane down the electrochemical or concentration gradient.

For channels only:

For carrier proteins only:

For channels as well as carrier proteins both:

4 0

3 years ago

Does anyone know how Analogous structures and Vestigial Structures are similar?

pochemuha

Answer:

En resumen, estructuras análogas son aquellas que poseen una función semejante partiendo del mismo medio, pero cuyo origen es diferente. Si dos estructuras tienen la misma función por medios semejantes y además parten del mismo origen, son estructuras homólogas.

Explanation:

6 0

2 years ago

WILL MARK BRAINLY What word do we use to describe the Asexual reproduction of a genetic carbon copy of an animal or plant?

nydimaria [60]

Cloning.

Step-byExplanation:

A clone is a genetically identical copy of an organism.
A clone is usually a product of asexual reproduction.
Unlike sexual reproduction, asexual reproduction requires only one parent and thus no recombination of traits occur and the clone becomes an exact copy of the mother.

Process of creating clones is called cloning.
Cloning can be carried out naturally as asexual reproduction or artificially through molecular cloning techniques.

3 0

3 years ago

Help please this is a 7th grade science question

mrs_skeptik [129]

Answer:

first one B second one A

Explanation:

PLS MARK ME AS BRAINLYEST

5 0

2 years ago

Which of the following is a true statement about tectonic plates?

Nataly [62]

I would go with D as it is closest to correct. Every part of the surface of the Earth is a tectonic plate though. The plates vary in thickness, but all of the surface of the Earth is made up of tectonic plates, including the parts under the ocean. Technically, the Earth's landmass does not rest on the tectonic plates, it IS the tectonic plates, but it is the closest to correct here in my opinion.

4 0

2 years ago