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
Hunter-Best [27]
4 years ago
7

What role do all antigen-presenting cells (APCs) play?

Biology
1 answer:
lbvjy [14]4 years ago
4 0

Answer:

b). activation of T cells

Explanation:

An APC (antigen-presenting cell) can be described as an immune cell, which detects, uptakes, and informs the acquired immune response when an infection takes place. B cells, macrophages, and dendritic cells are antigen-presenting cells.

These cells play an important role in activation of T cells. T cells are unable to recognize soluble or free antigens and can only recognize antigens processed and presented by carrier molecules, such as MHC molecules.

Presence of MHCII molecules is a defining feature of APCs that process and present antigens to T cells. Hence, all antigen-presenting cells help in activation of T cells.  

Thus, the correct answer is option (b).

You might be interested in
How do our cells form<br> carbon dioxide?
Phoenix [80]

Answer:

the process of cellular respiration

Explanation:

oxygen releases heat energy and carbon dioxide

7 0
3 years ago
Read 2 more answers
The thymus is the only lymphoid organ that does not: A) have lymphocytes B) produce hormones C) have a cortex and medulla D) dir
Alekssandra [29.7K]

The thymus is the only lymphoid organ that does not D. fight the antigens directly.

  • The thymus, bone marrow, spleen,lymph nodes, a network of lymphoid tissue along secretory surface (MALT), and the skin which performs the immune functions are known as lymphoid organs.
  • On the basis of its role, lymphoid organ are classified into primary and secondary lymphoid organ.
  • The lymphocytes from bone marrow are transformed into specialised T cells in the thymus. In this way thymus helps to improve the immune system
  • T cells produced in the thymus is travels through the blood stream to lymphnodes and other parts of the body to fight against the antigen.

Learn more about Thymus on brainly.com/question/8565109

#SPJ4

7 0
2 years ago
What would be the effect on climate in the temperate latitudes if Earth were to slow its rate of rotation from a 24-hour period
grin007 [14]

The correct option is (E) The climate would stay the same. The only change would be longer days and nights.

If Earth were to slow its rate of rotation from a 24-hour period of rotation to a 48 -hour period of rotation, the climate would stay the same. The only change would be longer days and nights.

<h3>How does the rotation of the Earth affect day and night?</h3>
  • Earth rotates on its axis, or turns, once every 24 hours, carrying us all along with it. We experience daylight when we are on the side of the Earth that faces the Sun. We are now on the side of the Earth that faces away from the Sun, and night has fallen.
  • The Earth revolves counterclockwise, and if we were to look down on it from above the north pole, we would notice that day and night move over our planet from east to west.

Learn more about the Earth rotation with the help of the given link:

brainly.com/question/14363429

#SPJ4

I understand that the question you are looking for is "What would be the effect on climate in the temperature latitudes if Earth were to slow its rate of rotation from a 24-hour period of rotation to a 48-hour period of rotation?

A) Seasons would be longer and more distinct (colder winters and warmer summers).

B) There would be a smaller range between daytime high and nighttime low temperatures.

C) Large scale weather events such as tornadoes and hurricanes would no longer be a part of regional climates.

D) Winter seasons in both the northern and southern hemispheres would have more abundant and frequent precipitation events.

E) The climate would stay the same. The only change would be longer days and nights.

8 0
2 years ago
Motor neurons carry information from?
dimulka [17.4K]
Hi i might be late but it’s B i hope i helped!
6 0
3 years ago
Please select the word from the list that best fits the definition
never [62]
The appropriate answer is d. a topographic maps. A topographic map shows the physical features of the earth's surface. A topographic map would therefore highlight features such as mountains, valleys, rivers and other landforms.
The height above sea level of these landforms are represented on the map by contour lines. These are lines on a map that show the height of the land. Colour is sometimes used to represent height if contours are not used.
3 0
4 years ago
Read 2 more answers
Other questions:
  • The first eukaryotes evolved 2.5bya.<br> A.True<br> B. False
    10·1 answer
  • Is a protein a monomer or a polymer
    14·2 answers
  • In some parts of the world, rain forests are being cut down to make land available for homes, businesses, and farms. How does th
    9·1 answer
  • Human population growth accelerated in recent centuries mostly because of a. the bubonic plague. b. better hygiene and food. c.
    13·1 answer
  • Marlee has just been diagnosed with multiple sclerosis (MS). As the disease progresses, communication to some of her muscles may
    7·1 answer
  • In agricultural areas, farmers pay close attention to the weather forecast. Right before a predicted overnight freeze, farmers s
    14·1 answer
  • hermoglobin is a protein that binds to oxygen. it is only produced by red blood cells and it allows blood to transport oxygen th
    8·1 answer
  • When wind speeds are not fast enough to be called a hurricane, what is the name given?
    9·1 answer
  • There are four components of physical fitness: cardiorespiratory fitness, musculoskeletal fitness (divided into muscular strengt
    5·1 answer
  • What role does calcium play in this regulation, and where is it stored in a muscle fiber?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!