1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ket [755]
3 years ago
7

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

a part of? Make a list showing the general steps required for the protein to go from its inception (DNA stage) to its final job site (membrane
Biology
1 answer:
motikmotik3 years ago
8 0

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.

You might be interested in
What was tha accomplishment of Wendell of Stanley
vaieri [72.5K]

Answer: he crystallized tobacco mosaic virus ( TMV)

Explanation

4 0
3 years ago
Read 2 more answers
Why do cells need to replicate their DNA?
ch4aika [34]

Answer:

Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.

Explanation:

Cells must replicate their DNA before they can divide. This ensures that each daughter cell gets a copy of the genome, and therefore, successful inheritance of genetic traits. DNA replication is an essential process and the basic mechanism is conserved in all organisms.

<u><em>Laroi</em></u>

4 0
3 years ago
Read 2 more answers
Which substances may form in the human body due to invaders entering the blood
kicyunya [14]
They answer to this question is anti-bodies
5 0
3 years ago
Read 2 more answers
If a cell has 26 chromosomes, how many chromosomes will be in each of the daughter cells produced through mitosis? How many daug
aleksklad [387]

Answer:

13

Explanation:

At the end of mitosis there would be half the amount of cells. Therefore, 13 daughter cells.

7 0
3 years ago
Read 2 more answers
What is NOT a characteristic of saturated fats
Elenna [48]

Answer:

A) Fats provide 12 kcals of energy per gram.

8 0
2 years ago
Other questions:
  • In what part of the cell cycle does the DNA make a copy of itself?
    11·1 answer
  • What is a natural section
    6·2 answers
  • A train travels 95 kilometers in 3 hours and then 55 kilometers in 2 hours. What is it’s average speed?
    11·1 answer
  • What occurs during the process of condensation in the water cycle?
    14·2 answers
  • Which is a better solvent of salt,
    9·1 answer
  • (06.03 lc) what is the most common bacterial sexually transmitted infection, which left untreated can lead to pelvic pain, pelvi
    13·1 answer
  • Which container will get bigger after osmosis
    14·2 answers
  • Negative consequences that may result from an abundance of nutrients in Lake Okeechobee
    10·1 answer
  • About 96% of sea water is made of: A. Nitrogen/ B. Carbon dioxide/ C. Sodium and chloride/ D. Hydrogen and oxygen
    7·2 answers
  • Which statement best describes photosynthesis and respiration
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!