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MakcuM [25]
3 years ago
15

Outline the events of protein synthesis (transcription and translation)

Biology
1 answer:
Yuliya22 [10]3 years ago
4 0

Answer:

The events of protein synthesis are simple- First of all, protein synthesis is the process for which cells make proteins. Protein synthesis occurs in only two stages, transcription and translation.

Transcription-

Transcription is the transfer of genetic instructions in DNA and mRNA in the nucleus. It includes three steps: initiation, elongation, and termination.

Translation-

Translation occurs at the ribosome, which consists of rRNA and proteins. During translation, the genetic code in mRNA is read and is used to make protein.

Explanation:

The two processes (transcription and translation ) are pretty much summed up by the 'central dogma of molecular biology' which goes- DNA → RNA → Protein.

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Surfactant deficiency due to undeveloped lungs (in premature infants)  suggest respiratory distress in an​ infant, but would be less likely to be observed in an​ adult beacuse in adults , lungs are fully developed and lack of surfactant is less.

Explanation:

Respiratory distress syndrome is a type of neonatal disease of respiration ,caused by deficiency of the surfactant produced by type II alveolar cells in the lungs most commonly in premature infants.

Normally , the lungs of the fetus start the formation of the surfactant during the third trimester (26 weeks through labor and delivery ) but in the premature infants , the lungs are not totally developed , hence lack of surfactant production results in the respiratory distress syndrome charactarized by inflammation of the airways due to the lack of the surface tension lowring effect of the surfactant.

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3 years ago
What information can a scientist learn directly from a single fossil?
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Answer:

How long the organism lived

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2 years ago
What is a characteristic of the tissue layers that make up the epidermis?(1 point)
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I think it's B They contain many of the sensory cells found within the skin.

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7 0
2 years ago
Arrange the order of events for the internalization of LDL particles into cells:
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Answer:

The correct answer is "5-1-3-2-4".

Explanation:

Internalization of LDL particles into cells, is needed to form the intracellular vesicles known as endosomes. The order of events that allow for this process are:

5) LDL receptors migrate to the cell surface and cluster in clathrin-coated pits. Clathrin acts directing the receptors to the cell membrane region where endosomes are formed.

1) A combination of cholesterol and apolipoprotein binds to LDL receptors and becomes internalized as endocytotic vesicles. Once the receptors are in the proper cell membrane region, cholesterol and apolipoprotein are bound and internalized.

3) Several endocytotic vesicles fuse to form an endosome.

2) The environment of the endosome becomes acidic, which causes the LDL to dissociate from its receptor; additionally, the endosome fuses with a lysosome. LDL should be dissociated from its receptor since it is going to be degraded in the following step.

4) The LDL particle is degraded by the lysosome. This takes place after endocytosis, when LDL particles are transported into lysosomes once they are fused, cleaving the cholesterol esters into cholesterol and fatty acids.

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