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Dmitry [639]
3 years ago
14

What substances present in semen (not in the sperm itself) allow sperm to successfully make their long journey through the “host

ile environment of the vagina,” into the uterus and into the Fallopian tubes? List at list five substances and the glands that produce them.
Biology
1 answer:
Sindrei [870]3 years ago
3 0
Semen is a mixture of sperm and seminal fluid, a liquid that consists of the secretions of the seminiferous tubules, seminal vesicles, prostate, and bulbourethral glands.

The seminal fluid (which is primarily composed of water, fructose, proteins, minerals, and other micronutrients) provides the sperm with a transportation medium, nutrients, and protection from the hostile acidic environment of the male’s urethra and the female’s vagina. 
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The anemia resulting from a deficiency of either vitamin B 12 (cobalamin) or folate is caused by a disruption in DNA synthesis o
Vesnalui [34]

Answer:

The given statement is true.

Explanation:

A condition in which uncharacteristically large, unusual and immature RBCs known as megaloblasts gets generated by the bone marrow is known as megaloblastic anemia. The condition can arise due to many causes of which deficiencies of folate or vitamin B12 (cobalamin) are the most general ones. The mentioned vitamins perform an essential function in the generation of RBCs.  

The signs and symptoms of megaloblastic anemia are lightheadedness, shortness of breath, pale skin, unusual heartbeat, and dizziness. Some of the other signs of the condition are weakness in muscles, pains and aches, and dyspnea.  

7 0
3 years ago
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How much of the protein consumed by humans around the world is fish?
notsponge [240]

The correct answer is: about 20 percent.

Fish is one of the major sources of animal protein around the world. This is especially case for the people who live on the coast.  

Other source of the animal protein is red meat. About 70 percent comes from animals such as cows, goats, sheep, buffalo, deer.

When it comes to non-meat protein food, eggs and dairy products provide good energy source.


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3 years ago
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The diagram below shows the position of the sun, moon, and Earth. The labels A, B, C, and D represent four coastlines on Earth.
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Answer:

It will experience a low tide because water is drawn away from the area between the high tides.

Explanation:

The oceans on earth bulge outwards towards the sun and moon due to gravitational pull. This building is highest when the moon and sun are in line (same plane). The coastline within this plane will experience high tides while those at the right angle will have the lowest tides.  

7 0
3 years ago
Why do all cells need to receive their own supply of glucose?
rosijanka [135]

Answer:

D) Glucose is needed for cellular respiration

<em><u>Hope this helps!</u></em>

<em><u>Please mark brainliest!</u></em>

8 0
4 years ago
Muscles cannot function without ATP. Review your knowledge of ATP by answering the followini
AlexFokin [52]

Answer:

energy

Explanation:

hope  it helps.

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