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melisa1 [442]
3 years ago
6

Do sponges have joints

Biology
1 answer:
ANTONII [103]3 years ago
7 0

Answer:

No they don't have joined.

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What is the role of renin in the secretion of aldosterone?
Gelneren [198K]

Answer:

Explanation:

Aldosterone is a hormone which is produced by the adrenal glands which are present above the kidneys. The role of aldosterone is to regulate the blood pressure. It causes the reabsorption of water and salts into the bloodstream during the kidney filteration process. Hence, maintains the blood volume, restors blood pressure and salt level.

Renin is an enzyme. It facilitates chemical reactions which stimulates the synthesis of angiotension II, it directs the synthesis of aldosterone.

3 0
2 years ago
1. Explain how parents and offsprings can become different from eachother.
Fudgin [204]

Answer:

In asexual reproduction all the genes in the offspring come from one parent. In sexual reproduction one full set of the genes come from each parent. Living things produce offspring of the same species, but in many cases offspring are not identical with each other or with their parents.

Explanation:

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2 years ago
What was the name of a wealthy Saudi who quickly rose to leadership<br> within the mujahideen?
scoray [572]
Uring this period he became acquainted with Osama bin Laden, a wealthy Saudi who had joined the Afghan resistance to the Soviets,
4 0
1 year ago
An operon is controlled by a repressor. When the repressor binds to a small molecule, it binds to DNA near the operon. The opero
larisa [96]

Answer:

Negatively repressible.

Explanation:

A control which occurs through repressor is known as negative control which may be inducible or repressible.

When a small molecule named as allolactose binds this repressor it leads to allosteric repulsion which removes repressor from the operator as a result of which RNA polymerase can start transcription. Allolactose is therefore known as inducer because it induces lac operon expression.

But here, the operator is active (induced) already so there is no need to induce the operon which means that it can only be repressed so that transcription could stop. So the answer is negatively repressible operon.

6 0
2 years ago
Desalination _____. adds salt to freshwater. removes salt from freshwater. prevents saltwater from being used in mining. allows
tigry1 [53]

The answer is B, removes salt from freshwater.

6 0
3 years ago
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