1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
guajiro [1.7K]
3 years ago
10

Which cells are required to process and present antigens from foreign material as the initial step in the immune response?

Biology
1 answer:
Alexxandr [17]3 years ago
6 0
<span>The macrophage is the cell responsible for detecting, engulfing and destroying pathogens and apoptotic cells. These cells process and present antigens (foreign materials) to immunocompetent cells and thus they are the key mediators in the development of all immune reactions.</span>
You might be interested in
The pH indicator bromothymol blue is blue in an alkaline solution and yellow
N76 [4]

Answer:

I think the full question is this:

The pH indicator bromothymol blue is blue in an alkaline solution and yellow in an acidic solution. A slight increase in acidity, such as when CO2 gas is added, causes a solution with the indicator to change from blue to yellow. A solution with the indicator would be most likely to turn from yellow to blue when which combination of factors exists? A. Yeast cells and sugar are placed in the solution. B. Water plants in the solution are placed under a bright lamp. C. Algae are placed in the solution and left in a dark room. D. A person blows air into the solution through a straw.

Answer is option B

B. Water plants in the solution are placed under a bright lamp.

Explanation:

When CO2 gas was added, it causes a solution with the indicator to change from blue to yellow. A combination of factors that can cause this solution to change from the yellow to its initial blue colour is utilizing a photosynthetic organism which in the presence of light can utilize and remove these carbondioxide and revert the yellow colour of the solution to blue

Thus, water plants in the solution are placed under a bright lamp

Algae are placed in the solution and left in a room filled with light

5 0
3 years ago
Compare AND contrast primary and secondary succession.
Margaret [11]

Answer:

Primary succession occurs following an opening of a pristine habitat, for example, a lava flow, an area left from retreated glacier, or abandoned strip mine. In contrast, secondary succession is a response to a disturbance, for example, forest fire, tsunami, flood, or an abandoned field.In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.

Explanation:

8 0
3 years ago
Read 2 more answers
Choose the appropriate reason for this. In "In the shadow of war" Omovo follows the soldiers and the woman most likely because h
avanturin [10]
In "In the shadow of war" Omovo follows the soldiers and the woman most likely because he <span>yields to the curious whims of boys his age. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has come to your desired help.</span>
8 0
3 years ago
The soil report for a particular field shows low nitrogen concentrations after a harvest of wheat. Which crop can you cultivate
Shalnov [3]
Pea plants

These belong to legumes and legumes have a mutualistic relationship relationship with bacteria which allows them to add atmospheric nitrogen into the soil by a process called nitrogen fixation.<span />
6 0
3 years ago
Read 2 more answers
List the cardiovascular and cardiac features unique to the fetus and describe their role in fetal circulation; explain the fate
STatiana [176]

Cardiovascular features unique to the Fetus:

Fetal circulation is characterized by low systemic vascular resistance (SVR) with high systemic blood flow and high pulmonary vascular resistance with low pulmonary blood flow.

<h3>What is fetal circulation?</h3>

The embryonic circulatory system directs blood that needs oxygen through three shunts, or microscopic tunnels. These shunts are intended to avoid forming organs like the liver and lungs while the fetus is still in the womb.

The foramen ovale, which carries blood from the right atrium of the heart to the left atrium, and the ductus arteriosus, which takes blood from the pulmonary artery to the aorta, are the two shunts that bypass the lungs.

Through the placenta, the mother's blood supplies the fetus with nutrition and oxygen. The enhanced blood divides into three branches as it travels via the umbilical cord to the liver.

Learn more about fetal circulation with the help of the given link:

brainly.com/question/7191531

#SPJ4

7 0
2 years ago
Other questions:
  • The chemical element found in all amino acids but not found in carbohydrates or lipids is
    12·1 answer
  • Researchers suggests that we can avoid self-confirming diagnoses by a. looking for illusory correlations. b. carefully monitorin
    6·1 answer
  • There are many criteria that are used to define living things. Living things reproduce grow and develop. They respond to stimuli
    9·2 answers
  • When a Venus flytrap catches an insect, it is reacting to the stimulus of
    12·2 answers
  • A mutation caused some normally black-and-white peppered moths to be all
    11·2 answers
  • List of organs in the cardiovascular system
    13·1 answer
  • PLEASE ANSWER!
    13·1 answer
  • The major regions of a hair shaft include all of the following except ________.
    9·1 answer
  • During fertilization gametes join to form a diploid cell known as<br> a _____.
    5·1 answer
  • Compare the process of excretion in terrestrial arthropods with that in aquatic arthropods.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!