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slamgirl [31]
2 years ago
15

What 3 functions do proteins have in a plasma membrane?*

Biology
1 answer:
Aliun [14]2 years ago
4 0

Answer:

Explanation:

Proteins in the plasma membrane have several functions based on their components, location etc. For instance, if the protein transcends the entire plasma membrane it could be a transport protein, responsible for the import and export of certain molecules between the cell and the extracellular matrix (ECM). If the proteins are resting at the surface of the cell, facing the ECM, their role could be to detect components in the ECM, relaying a series of messages back to the nucleus so that the cell can ‘decide’ what it should do with this information (is it being told it should undergo apoptosis, should it begin to divide, should it migrate?). As well as this, it could be involved in the detection of foreign bodies such as pathogens. This is an extremely job for these proteins because if the cell does come in contact with a pathogen, the cell can use these proteins to engulf the pathogen and through a series of steps, present the antigen on their major histocompatibility complexes (either 1 or 2 depending on the cell type) or HLA’s for human cells. Thus it can be concluded that protein functions vary widely in the plasma membrane and due to the vast number of proteins that can be found there, it’s difficult to narrow down the exact main of functions of all these proteins put together.

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What is the end product of mitosis
tankabanditka [31]

Answer:

Two identical daughter cells.

Explanation:

Mitosis is when a single celled organism divides itself into two identical cells, called daughter cells. The opposite of this is meiosis.

8 0
3 years ago
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Define carrying capacity with an example?
fomenos

Answer: caring capacity is the maximum amount of a population that an enviornemtn can sustain for carry.

Explanation:

Deer eat a lot of plants, tress and shrubs etc. When hunters kill wolves (deers natural predator) their carrying capacity increased until they started to eat all the vegetation and the deer began to starve because they reached their carrying capacity.

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What type of mutation occurs when a nucleotide is added to the DNA?
Yanka [14]

Answer:

A frameshift mutation.

Explanation:

A frameshift mutation is when one adds an extra nucleotide to a series of nucleotides. This will mess up the order of the nucleotide, thus when it forms the codons, and eventually, the amino acids; all of the codons are wrong, thus all of the amino acids are wrong.

In this situation, an extra nucleotide is added to a sequence of DNA, this results in all of the other nucleotides getting pushed over by (1). Thus, all of the nucleotides form the wrong codons and the wrong amino acids. Therefore, a frameshift mutation has occured.

4 0
2 years ago
3.
Nata [24]

Answer:

genes are the building blocks for proteins

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3 years ago
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Which of the following best describes the process of transcription during protein synthesis?
jonny [76]

Answer:

The answer is 'D'. Transcription is the process by which a single stranded mRNA is formed from the double stranded DNA.

Explanation:

The central machinery of biology involves three processes- replication, transcription and translation. The process by which DNA doubles itself is called <u>replication</u>. In translation, protein is formed from the messenger RNA or mRNA. The major steps involved in transcription are:

  1. <em>Initiation</em>
  2. <em>Elongation</em>
  3. <em>Termination</em>

In the process of translation, amino acids bind together in the <u>ribosome</u> to form a polypeptide chain.

8 0
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