Red blood cells live for about one year.
TrueFalse

Answers

Answer 1
Answer: false because they are always repuducing


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The virus that causes mumps in humans is composed of a protein outer shell containing a core of DNA. The virus that causes the flu in humans is composed of a protein outer shell containing a core of RNA. Vaccines that are effective against mumps work efficiently year after year. Vaccines that work against the flu must be revised and changed every year. What accounts for the difference in the effectiveness of these two vaccines?

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Flu vaccines need to be revised and changed every year because the flu virus constantly mutates. Flu viruses can change in two ways: drift or shift. Antigenic drift occurs when genes of the virus slowly change during replication until the immune system no longer recognizes it. On the other hand, antigenic shift occurs when a major change in the virus happens. This usually leads to a totally different kind of virus. This is what happened during the H1N1 scare in 2009.

DNA viruses like mumps are less prone to mutation due to the presence of DNA polymerase. RNA viruses are more prone to mutation because they undergo reverse transcription to simulate the role of DNA.

Answer:

I agree with this person ^^

Explanation:

Pls help!!!
also explain the answer plss

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Answer: Line A is the enzyme, and Line B is the no enzyme

Explanation:

The reaction rate of a chemical reaction is greatly impacted by the presence of an enzyme. Enzymes are biological catalysts that speed up the chemical reaction by lowering the activation energy required for the reaction to occur. Without an enzyme, the reaction rate may be slow or even non-existent, whereas with an enzyme, the reaction rate can be significantly increased.

In order to compare the reaction rate with and without an enzyme, a graph can be plotted with time on the x-axis and the amount of product formed on the y-axis. The reaction without the enzyme would have a slower rate of product formation and would result in a lower slope on the graph. On the other hand, the reaction with the enzyme would have a sharper rate of product formation and would result in a steeper slope on the graph.

It is important to note that the reaction rate with an enzyme can only be increased up to a certain point, as the enzyme can become saturated with substrate molecules. At this point, the reaction rate will plateau and adding more substrate will not increase the rate of product formation.

Understanding the role of enzymes in chemical reactions is crucial in fields such as biochemistry and pharmacology, as many drugs and therapies work by targeting specific enzymes in the body. By manipulating the activity of enzymes, scientists can alter the rates of chemical reactions and ultimately impact physiological processes.

Which of the following statements about air pollution is not true?a. Air pollution is caused by natural and human processes.
b. Carbon monoxide and sulfur oxides are common air pollutants.
c. Natural components of air, like carbon dioxide, cannot be considered air pollutants.
d. Primary and secondary pollutants are harmful to human health and the environment.

Answers

Answer: c) Natural components of air, like carbon dioxide, cannot be considered air pollutants.

Explanation:

Carbon dioxide plays a role as greenhouse gas. Though living being emit carbon dioxide when they breathe, carbon dioxide is considered as a pollutant when associated with cars, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas.


the answer is C. the other answers are correct

1. During the Vietnam War, African American soldiers were A. not allowed to fight overseas.
B. often granted deferments to attend college.
C. becoming commissioned officers at a high rate.
D. more likely than others to serve in combat positions.

Answers

During the Vietnam War, African American soldiers were more likely than others to serve in combat positions. Correct Option is 4.

During the Vietnam War, African American soldiers were disproportionately assigned to combat positions compared to their percentage in the overall population. They often faced a higher likelihood of being involved in front-line combat and dangerous missions. This disparity raised concerns about the fair and equal treatment of African American soldiers during the war. The Vietnam War era also saw significant civil rights activism and protests, with many African American activists advocating for equal treatment and an end to discrimination in the military.

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During the Vietnam War, African American soldiers were more likely than others to serve in combat positions. The answer to your question is D. I hope that this is the answer that you were looking for and it has helped you.

22. What will most likely happen if a person does not consume the minimum daily requirements of carbohydrates?

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Answer:

What will most likely happen if a person does not consume the minimum daily requirement of carbohydrates? The body will break down chitin from the bones. The body will break down glycogen from the liver. The body will break down glucose from the bloodExplanation:

What is regeneration?

Answers

Regeneration is the ability to gain something back again.

the action or process of regenerating or being regenerated, in particular the formation of new animal or plant tissue.