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dimulka [17.4K]
3 years ago
10

Which of the following organisms is not nekton?

Biology
2 answers:
Paladinen [302]3 years ago
8 0
Crabs are not a nekton.
Effectus [21]3 years ago
5 0
Which of the following organisms is not nekton? a. Whales
b. Crabs (answer)
c. Sharks
d. Dolphins
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Not only are the kidneys considered organs of excretion, but they have an endocrine function as well as an important role in the
stira [4]

Answer:

True

Explanation:

One of the edocrine processes the kidney is involved in is called the RAAS (Renin-Angiotensin-Aldosterone System) which is a signaling pathway involved in blood pressure control. It involves a number of hormones:

Angiotensinogen is produced by the liver in response tovarious inflammatory proteins

Renin is a protease produced by the kidneys in response tohypotension,

Angiotensin II increases blood pressure via a number of mechanisms:

Aldosterone acts to  increase reabsorption of Na+ and water and increase elimination of K+ and H+ in the distal tubules of the kidneys for ion concentration maintenance

5 0
3 years ago
What is the effect of Dideoxycytidine on the replication of viral DNA.
MariettaO [177]

Answer:

Several 2',3'-dideoxy-3'-thiapyrimidine nucleosides were studied for their ability to inhibit hepatitis B virus (HBV) DNA replication in a HBV-transfected cell line (2.2.15). 2',3'-Dideoxy-3'-thiacytidine (SddC) and 5-fluoro-2',3'-dideoxy-3'-thiacytidine(5-FSddC) were found to be the most potent anti-HBV compounds of those examined. Both compounds resulted in nearly complete cessation of viral DNA replication at 0.5 microM, as monitored by the absence of both intracellular episomal and secreted viral DNAs. The HBV-specific RNAs were not reduced at concentrations that completely blocked HBV DNA replication, suggesting that the inhibitory target is HBV DNA synthesis. The antiviral action of SddC and 5-FSddC was reversible. The concentration of SddC and 5-FSddC required to inhibit 50% of 4-day cell growth in culture was 37 microM and more than 200 microM, respectively. Unlike 2',3'-dideoxycytidine, these two compounds do not affect mitochondrial DNA synthesis in cells at concentrations lower than that required to inhibit cell growth. In view of the potent and selective antiviral activity, both SddC and 5-FSddC should be further evaluated for the treatment of human HBV infection.

Explanation:

4 0
2 years ago
15. Which of the below are/is NOT a body fossil?
Lyrx [107]
Body fossils include bones, teeth, claws and skin. Therefore the answer would be A, imprints.
5 0
2 years ago
Which change is an example of maintaining dynamic equilibrium
mr_godi [17]

A change in body temperature is an example of dynamic equilibrium where balance is attained within an environment as the consequence of internal control mechanism that continuously contrast outside forces that tend to change that environment. The human body produces heat as a by product of metabolic processes and uses behavioral and physiological mechanisms to control the rate at which heat is lost through skin when in a cold environment.<span>

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6 0
2 years ago
Taking two aspects of their relationship, explain how the marriage of the Prophet and Khadija set a good example for Muslim marr
nekit [7.7K]

Answer:

Due to their behaviour towards each other.

Explanation:

The marriage of the Prophet and Khadija set a good example for Muslim marriages today because their strong relationship and respect towards each other is the key to their beautiful marriage life. In marriage life, both husband and wife has great contribution to their relationship. If both husband and wife respect each other and support in every situation of life so their relationship will be strong and they live a beautiful marriage life so we can say that the marriage life of Prophet (S.A.W) and Khadija is a good example for all Muslims.

3 0
3 years ago
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