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kenny6666 [7]
3 years ago
15

How does the oil from the liver provide limited buoyancy in the absence of a swim bladder

Biology
1 answer:
Delvig [45]3 years ago
8 0
Unlike fish, which have a gas-filled swim bladder that keeps them afloat in the water, sharks rely upon a huge, oily liver to provide some buoyancy. The oil in the liver is lighter than water and gives the shark some buoyancy, but it is still heavier than water and will sink if it dos not actively swim.
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A hormone has been synthesized in the rough endoplasmic reticulum of an endocrine cell after which it has moved into the Golgi c
Oxana [17]

Answer:

peptide and protein hormone

Explanation:

Peptide and protein hormones are composed of amino acids with latter being longer in length. They are synthesized in rough endoplasmic reticulum where they undergo various modifications like N terminal signal sequence removal and glycosylation to form prohormones. These prohormones are sent to golgi apparatus where they are packaged in secretory vesicles. In response to a stimulus the appropriate vesicle is released via exocytosis.

They can show  regulated secretion where the hormone is stored in vesicles for a long time and then released in large amount in bursts for a proper stimulus. Sometimes they also show constitutive secretion where they are released slowly and steadily by the vesicles.

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3 years ago
24. Why Is ATP an important molecule for cells?
denpristay [2]
The answer would be B for this question. ATP is used by the mitochondria the “power house” of the cell.
3 0
4 years ago
A group of students is reviewing information about cast composition in preparation for a discussion on the advantages and disadv
san4es73 [151]

Answer:

Plaster cast is made up from dry muslin containing starch or dextrose and calcium sulfate.

Explanation:

It is applied to protect and  is immobilize an injured bone or joint because it provides rigidity.

It is also used to help the bone and joint from reduce pain that is created during movement.

When plaster becomes wet,it reacts (Between water and calcium sulfate) and produces heat that eventually sets the plaster.It becomes hard when it dries.

The color of plaster casts are smooth and white.

4 0
3 years ago
Farmers are not able to rely on rainfall to meet the water needs for their crops.
Rzqust [24]

Answer:

True

Explanation:

That's why modern-day farmers use giant sprinklers and tractor water tanks and trucks!

Glad I could help!!

3 0
3 years ago
Read 2 more answers
When a person is cut, the injured tissue initially releases chemical signals into the bloodstream. These chemicals signal platel
guajiro [1.7K]

Answer:

Platelets would release signals to stimulate the production of more platelets

Explanation:

Positive feedback mechanism is one of the two types of feedback mechanisms (other being negative feedback mechanism) in which the products of a process stimulates more of that product to be synthesized or produced. In other words, the result of a reaction increases the secretion of more results.

In this case where the injured tissue of a cut initially releases chemical signals into the bloodstream. These chemicals signal platelets to be attracted to the injured area. However, if this is a positive feedback mechanism as explained above, Platelets would release signals to stimulate the production of more platelets.

4 0
3 years ago
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