g To generate a vaccine to pertussis toxin, a heat-killed preparation of Bordetella pertussis (the bacteria that produce pertussis toxin) is mixed with a purified preparation of the inactivated toxin protein. The mixture is then injected subcutaneously into mice. In an effort to enhance the antibody response to the toxin, a group of test mice is depleted of all their dendritic cells immediately prior to immunization. However, instead of enhancing the antibody response, the dendritic cell depletion nearly eliminated the anti-toxin antibody response because why

Answer:l

Explanation:

what is Sediment pollution?

The heron has long legs so that it can walk in the shallow water and catch fish.what is this type of adaptation called?​

What is the purpose of the part of the male reproductive system that is
highlighted below?
A. Creates the fluid in semen
B. Transfers sperm cells to the urethra
C. Manufactures sperm cells
0
D. Stores sperm cells until they mature

1. A customer from a previous season comes into your store confused. A
bed of pink four o'clock flowers she planted the previous season self-
seeded and produced a mixture of about 1/4 red, 1/4 white, and 1/2 pink
flowers this year. The customer wants to know why the pink flowers are
now a mix of colors. This is possible because of ...
*

Importance and applications of biosystematics in biology?

I NEED HELP PLS
Chieko is doing an experiment with a water clock. She fills a 2-liter soda bottle with water and marks the water level. She puts two tiny pinholes in the base of the bottle. Water seeps out. She checks the time against her watch. After an hour, she marks the new water level. She repeats this process until the water is all gone. Chieko made six hour marks on the bottle, representing the passage of six hours. How can Chieko test her water clock to see if the timing is accurate?
Group of answer choices

Repeat the experiment using a better watch

Repeat the experiment using less water in the bottle

Repeat the experiment using a kitchen timer set to go off each hour

Repeat the experiment using the same amount of water and the same watch

pls help i dont get it​

Mitosis and meiosis are cell division mechanisms that lead to different numbers of daughter cells. Which explanation best describes how these two processes maintain continuity?

Which of the following statements about migration is true?
a. Migration is always from one region to another.
b. Animals always migrate within a region.
c. Migration always negatively impacts an ecosystem.
d. Animals migrate for various reasons.
Please select the best answer from the choices provided
A
B

What do you call an animal cell after being filled by oamosis?​

To whom is the first method of taxonomy attributed? *
Alexander the Great
Julius Caesar
Aristotle
William the Conqueror

The active site of an enzyme is damaged, leaving it nonfunctional.
How would this change to the enzyme's function be best described using the graph above?
Choose 1 answer.
The reaction originally proceeded through the path of Y, but now proceeds through the path of
Х.
B
The reaction would continue to proceed through the path of Y.
The reaction originally proceeded through the path of X, but now proceeds through the path
of Y
The reaction would continue to proceed through the path of x

The opening and closing of the heart valves is caused by Multiple Choice action potentials within the cusps of the valves. pressure changes of alternating contraction and relaxation during the cardiac cycle. contraction and relaxation of papillary muscles that pull on heart strings. contraction of the smooth muscle in the walls of the great vessels leaving the heart.

How long does the virtual plant survive when you give it a high amount of light and carbon dioxide but no water?​

5. Which of these would be the best thing for scientists to examine if they wanted to see if two organisms had a common ancestor?* O They would look at the larval forms of the organisms They would look at what the organisms liked to eat They would look at how the organisms reproduce. O They would look at how the organisms migrated to new locations​

two example of epidemic diseases​

According to scientists, donkeys and horses share a common ancestor. Which evidence shows that the two organisms are related?
Group of answer choices

Both run fast.

They have the same diet.

They have the same bones in their limbs.

Both are tall.

easy 5th grade science please look at photo and answer!! giving brainliest

Which of these is a form of nonrenewable energy?

true or false: The endocrine system is made up of organs called neurons that release chemical signals directly into the bloodstream.

If sports drinks have a higher solute concentration than blood, what condition may result when you drink them?

Gourmet Eatery has a policy of automatically adding an 18%
tip to every restaurant bill,
28866

A marine biologist measured the amount of heat radiated from an aquarium over the course of an experiment. His measurements are shown in the graph below.


Graph shows heat, measured in Joules, radiated from an aquarium over time, measured in seconds. At 0 seconds, the energy, in the form of heat, is 1.2 Joules. At 5 seconds, the energy is 1.6 Joules. At 10 seconds, the energy is 1.3 Joules. Finally at 15 seconds, the energy is 1.5 Joules.


Based on this data, he concludes that the aquarium cannot be considered a closed system for this experiment. Explain why this conclusion is invalid.


A closed system exchanges both matter and energy with its surroundings, and the scientist only measured the exchange of heat.

A closed system can exchange energy but not matter with its surroundings, and the scientist did not measure the movement of matter.

A closed system exchanges all of its energy with its surroundings, and the scientist only measured the exchange of heat.

A closed system exchanges all of its matter with its surroundings, and the scientist did not measure the movement of matter.

TRUE OR FALSE: DINOFLAGELLATES IS A GROUP OF BACTERIA THAT USED TO BE CLASSIFIED AS ALGAE

Imagine you’re a doctor treating a patient with severe vision issues. What questions might you ask to determine whether these issues are more likely to be inherited or caused by environmental factors?

Characteristics of codon

The question is above (: I’ll mark brainalist

8. X= 36 x 12 of 18
9. X = (25 x 3) = 15
10. X = 12 x 14 of 16​

Provide at least three ways in which Mountains can be impacted by either natural processes or human processes, including both constructive and destructive processes.

HELP! I Will Pick brainliest

Which is true of reabsorption in the distal convoluted tubule?