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3 years ago

Which organelle is the location of protein synthesis? (4 points)

Biology

2 answers:

raketka [301]3 years ago

6 0

Answer:

Ribosome

Explanation:

Ribosomes are mainly made up of ribosomal RNA and ribosomal proteins. Each has two subunits (30S and 60S or prokaryotes) and 40S and 60S in eukaryotes. The smaller unit usually reads the mRNA -with the message from the nucleus -on how to ‘manufacture’ the proteins. The larger subunit actually does the translation by bringing in t_RNAs that carry specific amino acids and then forming peptide bonds between amino acids and ultimately forming polypeptide chains.

S_A_V [24]3 years ago

3 0

Answer:

i guess we all had the same question lol sorry you had to wait

Explanation:

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1. The atrioventricular valves permit blood flow:

gayaneshka [121]

Answer:

1. A) in one direction only.

2. B) pulmonary valve.

Explanation:

The heart consists of four cavities: two atria (upper cavities) and two ventricles (lower cavities). Blood passes through a valve before leaving each cavity of the heart. The valves prevent the backward flow of blood. Actually, the valves are fins (leaflets) that act as single-way blood inlets on one side of the ventricle, and as single-way blood outlets on the other side of the ventricle. Normal valves have three fins (leaflets), except the mitral valve, which only has two.

The four valves of the heart are the following:

• The tricuspid valve controls blood flow between the right atrium and the right ventricle.

• The pulmonary valve controls blood flow from the right ventricle to the pulmonary arteries, which transport blood to the lungs to oxygenate it.

• The mitral valve allows oxygen-rich blood from the lungs to pass from the left atrium to the left ventricle.

• The aortic valve allows oxygen-rich blood to pass from the left ventricle to the aorta, the largest artery in the body, which transports blood to the rest of the body.

As the heart muscle contracts and relaxes, the valves open and close, allowing blood flow to the ventricles and atria alternately. The following step-by-step illustration explains the normal operation of the left ventricle valves:

- When the left ventricle relaxes, the aortic valve closes and the mitral valve opens. This allows blood to flow from the left atrium to the left ventricle.

- When the left atrium contracts, more blood flows to the left ventricle.

- When the left ventricle contracts again, the mitral valve closes and the aortic valve opens so that blood flows to the aorta.

When we talk about atrioventricular valves, it means tricuspid valves and the mitral valve

6 0

4 years ago

Why does tissue fluid does not contain RBC?

larisa [96]

Explanation:

The plasma that filters through the blood capillaries into the interstitial fluid does not contain red blood cells or platelets as they are too large to pass through but can contain some white blood cells to help the immune system.

6 0

3 years ago

Give an example and a brief description of a pathological condition that affects the skeleton

KiRa [710]

Answer:

An example of a pathological condition that affects the skeleton is Osteoporosis .

Explanation:

Osteoporosis is a disease that affects the skeleton in which the quality and density of bone are reduced. In this condition, the chances are high for easy bone fracture as they become fragile. Bone density takes place in very silently but progressively.

Osteoporosis condition leads to higher bone loss (osteoblast) than the growth of new bone (osteoclast). Bones become like a honeycomb, fragile and easy to fracture. This pathological condition generally occurs due to the imbalance of hormones that are a parathyroid hormone, estrogen, and to a lesser extent of testosterone.

This condition can be prevented by proper diet and appropriate amount of protein and vitamin D.

3 0

3 years ago

A fusion protein can be sythesized to carry a specific tag, which is useful in identifying the proteins in various experiments.

Lerok [7]

Answer:

A fusion protein can be sythesized to carry a specific tag, which is useful in identifying the proteins in various experiments. Fusion proteins with the FLAG epitope bind to specific anti-FLAG antibodies and carry this extra sequence: Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys. The bioteh company that sells anti-FLAG antibodies states that fusion proteins carrying the Flag epitope display the sequence on the surface of the protein. This is likely A short hydrophilic 8-amino acid peptide because of its hydrophilic nature of the eight residues are Likely to be located on the surface of the fusion protein, making FLAG highly Specific and easily accessible for cleavage by enterokinase and likely to interact with other epitope and domains Al with water.

Explanation:

FLAG, a short hydrophilic peptide consisting of 8 amino acids have been widely used as a fusion tag for purification and detection of a wide variety of recombinant proteins. the 3× FLAG system is an improvement upon the original system by fusing 3 tandem FLAG epitopes (22amino acids). detection of fusion protein containing 3× FLAG is enhanced up to 200 times more than any other systems.

8 0

3 years ago

DNA and RNA share a number of similarities, but they also differ in certain aspects of their structure.

Airida [17]

Uracil is not found in DNA, only RNA, and replaces thymine in RNA

5 0

3 years ago

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