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stellarik [79]
2 years ago
14

What ribonucleoprotein recognises and targets specific proteins to the endoplasmic reticulum in eukaryotes?​

Medicine
1 answer:
ZanzabumX [31]2 years ago
7 0
The signal recognition particle (SRP) is an abundant, cytosolic, universally conserved ribonucleoprotein (protein-RNA complex) that recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes.
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Explain the process of transcytosis.
iren2701 [21]

Answer:

Macromolecules are transported from one space to another through a process of transcytosis or transcellular transport. It consists of a series of steps that will allow the mobility of macromolecules from one extracellular space to another, through the cellular menbrain, through a vesicle formation process. These vesicles maintain a certain load inside. The processes that are generated for the transcytosis process are those of endocytosis and exocytosis.

4 0
3 years ago
Bodybuilders that take anabolic steroids such as androstenedione and testosterone often suffer from gynecomasty (enlarged breast
Whitepunk [10]

Answer:

Gynaecomastia occurs due to

1) Feedback inhibition of pituitary.

2) Conversion of exogenous androgens into estrogen (aromatization)

Substrate : Androgen

Product : Estradiol ( estrogen )

Enzyme involved : Aromatase

Explanation:

Gynaecomastia is a condition in which the mammary

glands, or breasts, enlarge and become sore and

tender to touch. It is due to the chemical change

in testosterone brought about by a process called

aromatisation, when the male hormone is converted

to a form of estrogen, the female sex hormone.

There is initially a sore feeling in the breast. A

skin ridge appears on the outer side of the areola

together with a halo appearance around the area

but no swelling. As the course continues, a swelling

develops and it becomes tender. Fatty tissue

builds up around the area and the breast becomes

prominent. At times there may be a secretion of

fluid from the nipple when it is squeezed. Steroids

should be stopped. If recovery does not occur by

the end of 2 months, surgery should be considered.

Other causes of gynaecomastia that may need to

be considered are the use of medications such as

Tagamet, a treatment for gastric problems, HCG and

spironolactone. Some body builders use this latter

drug to reduce body fluid. Occasionally boys in the

post-pubertal phase develop breast enlargement due

to endocrine imbalance totally unrelated to steroids.

Gynaecomastia also occurs as a result of feedback inhibition of the pituitary.

8 0
3 years ago
Atropine is an acetylcholine antagonist. Does atropine inhibit or enhance the effects of acetylcholine? Describe your results an
Tema [17]

Answer:

Atropine is highly potent antagonist of G-Class proteins of receptors termed as muscarinic acetylcholine receptors. Atropine blocks the action of these receptors and suppress the effects caused by parasympathetic nervous system. These complications of Atropine may lead to Tachycardia in patients administrated with atropine.

7 0
3 years ago
It is essential that prescription errors be avoided to protect a patient’s health and finances. health and safety. safety and as
Leto [7]
Answer: B, health and safety. Hopefully that helps!
4 0
2 years ago
Mirror neurons definition
makkiz [27]
A mirror neuron is a neuron that fires both when an animal acts and when the animal observes the same action performed by another. it “mirrors” the behavior of the other.
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