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1 year ago

Genes that code for proteins that promote the cell cycle and inhibit apoptosis are called _____.

Biology

1 answer:

garik1379 [7]1 year ago

5 0

Genes that code for proteins that promote the phone cycle and inhibit apoptosis are known as proto-oncogenes.

In distinction to the cell proliferation-stimulating function of proto-oncogenes and oncogenes that power the cell cycle forward, tumor suppressor genes code for proteins that generally function to preclude mobile growth and division or even promote programmed mobile death (apoptosis).

<h3>Which of the following is a gene that generally codes for a protein that suppresses mobilephone division?</h3>

Tumor suppressor gene.

Lear more about proto-oncogene here:

<h3>brainly.com/question/14057974</h3><h3 /><h3>#SPJ4</h3>

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3 years ago

A psychrometer is used to determine which weather variables?

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Relative humidity. A psychrometer has two thermometers, one for dry-bulb temperature and the other wet-bulb temperature.

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Read 2 more answers

Grizzly bears: As predators, bears eat several species, like moose and elk. They also eat many fruits throughout the ecosystem.

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Your teacher likes to copy. Found this at https://examples.yourdictionary.com/examples-of-keystone-species.html

Grizzly bears: As predators, bears keep down the numbers of several species, like moose and elk. They also carry and deposit seeds throughout the ecosystem. Bears that eat salmon will leave their dropping and the partially eaten remains that provide nutrients such as sulfur, nitrogen and carbon to the soil.

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2 years ago

What process occurs in prokaryotes but not in eukaryotes?

Naddika [18.5K]

Explanation:

In the given question, the options are not provided in the question and neither they are found anywhere therefore based on the previous knowledge this can be answered.

Since both the prokaryotes and eukaryotes are living therefore they perform the metabolism or chemical reactions in the form of process.

Both eukaryotes and prokaryotes perform almost similar process like the cellular respiration, photosynthesis by green colored organisms, the Central dogma related process like the replication, transcription and translation.

The central dogma related processes differ in these process only in terms of the site they are performed and a few modifications which are characteristics of the eukaryotic cells.

In prokaryotes, the transcription and translation are coupled and takes place in the cytosol whereas in eukaryotes transcription in the nucleus and translation in the cytosol.

Also in eukaryotes, modifications like the splicing, alternative splicing, capping and tailing are observed which are not observed in the prokaryotes.

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3 years ago

imagine a cell-surface receptor protein is being newly synthesized. How can it get into the membrane that it will ultimately be

motikmotik

Answer:

the steps for a new receptor synthesis:

Explanation:

Do not forget the steps vary from an eukarityc cell to prokarityc one.

IN AN EUKARYOTIC CELL:

1- Transcription: in the nucleus, mRNA is synthesized from the DNA sequence that codifies the protein. Exons are spliced if needed by spliceosomes.

2- From nucleus into cytoplasm: mRNA goes through nuclear membrane into the cytoplasm were ribosomes, substrates for protein synthesis and other organelles are.

3- Ribosomes recognize a signal in mRNA and start reading the genetic code, three consecutive nucleotides at a time and adjust the correspondent tRNAs (tRNAs carry the aminoacids)

4- Peptide bonds are formed between consecutives aminoacids, and a polypeptide is build up according to the mRNA sequence.

5- (The mRNA has a signal that is recognized by the rough endoplasmic reticulum) The peptide goes into this reticulum (RER) and then into Golgi apparatus. (more chemical modifications are made if needed). By this moment the protein has an inserted portion in a lipid membrane.

6- The protein is transported in a vessel that finally fusions with cytoplasmic membrane and the receptor is in destiny. Hydrophobic aminoacid sequences are inserted in membrane.

IN A PROKARYTIC CELL:

1- Transcription (no splicing is needed, there are not exons)

2- There are not nucleus and cytoplasm divided (no transport)

3- Ribosomes recognize a signal in mRNA and start reading the genetic code, three consecutive nucleotides at a time and adjust the correspondent tRNAs (tRNAs carry the aminoacids)

4- Peptide bonds are formed between consecutives aminoacids, and a polypeptide is build up according to the mRNA sequence.

5- The mRNA has a signal that is guides the growing protein to cellular membrane. Hydrophobic aminoacid sequences are inserted in membrane.

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3 years ago