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
Kamila [148]
2 years ago
12

A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to _______. A. respond to circulat

ing viral antigens B. lyse tumor cells C. stimulate a cytotoxic T cell D. interact with a class II MHC-antigen complex
Biology
1 answer:
Leona [35]2 years ago
7 0

A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to interact with a class II MHC-antigen complex

Importance of Class II MHC-Antigen complex

  • CD4+ T cell-dependent immunological responses need antigen presentation restricted to MHC class II.

Professional antigen-presenting cells (APCs) perform a range of functions that are essential for the generation of an effective and specific immune response.

  • Dendritic cells (DCs) investigate their surroundings and gather foreign antigens, such as those derived from bacteria or viruses, before activating CD4+ and CD8+ T cells to initiate adaptive immune responses against these antigens.
  • The thymus' DCs and epithelial cells express (and also capture) a diverse set of self-proteins that contribute to both central and peripheral tolerance.

Recognizing the processes involved in the creation (and stability) of peptide-MHC class II complexes in APCs provides crucial information about T cellular metabolism including both normal and pathological settings.

Hence, the correct answer is option D

Learn more about APC here,

brainly.com/question/13588471

# SPJ4

You might be interested in
Production of the male gametes is known as
Arte-miy333 [17]

Answer:

answer is C spermatogenesis

5 0
3 years ago
Read 2 more answers
Need number3 and 4, what does that mean to trace the descent, what should I write
LekaFEV [45]
For number 3, Queen  Victoria's children and Queen Elizabeth II's descendants  are Edward VII, George V, George VI
for number 4, the descendants of Philip of Greece are Alice, Victoria of Hesse, Alice of battenburg
6 0
3 years ago
Read 2 more answers
So what is catalyst?
jeka57 [31]

Answer:

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

"chlorine acts as a catalyst promoting the breakdown of ozone"

a person or thing that precipitates an event.

"the governor's speech acted as a catalyst for debate"

Explanation:

hope its help

3 0
3 years ago
Are surface appendages that allow a bacterium to stick to a surface.
marshall27 [118]

Answer:

Fimbriae

Explanation:

Fimbriae are hair-like structures made up of proteins, that surround the outer surface of a bacterium. It helps them stick to the surfaces, tissues, and even other cells. The term fimbriae is often interchanged with pilli but pilli are longer. They are found in both gram negative and gram positive bacteria.

Attached is a picture of a bacterium.

4 0
4 years ago
WILL MARK BRAINLIEST!
Leya [2.2K]

Answer:

In a lab report , the analysis section is usually composed of the critical analysis of  the data and results obtained from the lab tests or experiments. it is supposed to consist of all the pros and cons of the experiment. In addition, the analysis section also consists of the drawbacks of the tests or experiments and what could have been done to avoid them.

I hope you are satisfied by the answer.

Thank you.

please mark brainliest

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement(s) is/are indicative of a covalent bond?
    13·1 answer
  • Cardiac muscle fibers 6. describe the structural and functional properties of cardiac muscle, and explain how it differs from sk
    14·1 answer
  • Lamarck wrote an important book talking about
    7·1 answer
  • Separation caused by geographic division is called ? A) allopatric speciation B) genetic speciation c) parapatric speciation D)
    12·1 answer
  • Howmny a molecules of eukaryote dna make up a human chromosome
    9·1 answer
  • List do people affect the environment
    15·1 answer
  • What kind of viral replication cycle will most likely damaged host cells immediately
    9·1 answer
  • HELP When dissolved in water, BLANK
    6·2 answers
  • An ecosystem has 150 organisms of 15 different species. What is the biodiversity index of this ecosystem?
    8·1 answer
  • Which energy resource is inexpensive, helps with garbage disposal, and reduces the need for landfills, protecting habitat?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!