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tatyana61 [14]
3 years ago
11

How to take out semen from testis​

Biology
1 answer:
USPshnik [31]3 years ago
5 0

Answer:

Explanation:

TESA can be used to diagnose or treat azoospermia. It can also be used to collect sperm from the testicles. It's often done with a nerve block in the Urologist's office or the operating room. A thin needle punctures the skin and testis to gently pull out sperm.

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The statements that  are true of receptor-mediated endocytosis is that It allows the internalization of extracellular substances in clathrin-coated vesicles.

<h3>What is receptor-mediated endocytosis?</h3>

Receptor-mediated endocytosis  can as well be regarded as the clathrin-mediated endocytosis,  which can be explained as the process by which cells absorb metabolites as well as  hormones, proteins.

It should be noted that in some cases of viruses through the inward budding of the plasma membrane, however the process of endocytosis”  can be seen as one that entails  both the ingestion of large particles  whic could be bacteria as well as the uptake of fluids or macromolecules in small vesicles.

In conclusion, when it take in large moplecules it is known as  phagocytosis (cell eating) , in receptor-mediated endocytosis , there is a room for the internalization of extracellular substances in clathrin-coated vesicles.

Therefore, the first option is correct.

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In a 1h nmr spectrum, the signal for a vinyl proton is generally more downfield than an alkyl proton because _____.
tamaranim1 [39]

In an 1H NMR spectrum, the signal for vinyl proton is generally more downfield than an alkyl proton because the additional magnetic field created by the π electrons causes the nearby protons to resonate at a higher frequency.

<h3>What is meant by NMR? </h3>

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The nuclei in this case are placed in a strong magnetic field.

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Therefore, In a 1H NMR spectrum, the vinyl proton signal is more downfield than an alkyl proton because the additional magnetic field created by the π electrons causes the nearby protons to resonate at a higher frequency.

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