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
Vitek1552 [10]
3 years ago
10

Which is NOT an immune component that can directly attack & destroy target cells?

Biology
1 answer:
lara31 [8.8K]3 years ago
7 0

Answer:

Macrophages are part of your innate immune system, which is antigen-independent and does not require activation.

Explanation:

Macrophages phagocytize (internalize) all non-self pathogens it encounters. These do their job without activation. Other cells in the innate immune system include basophils, neutrophils, eosinophils (these cells are polymorphonuclear leukocytes), mast cells, and dendritic cells, which act as the bridge between your innate and adaptive immune system.

All of the other entities listed above are part of your adaptive immune system. The adaptive immune system is antigen-dependent and requires activation. This section of your immune system responds differently to different pathogens, and has the bonus of having immunologic memory, the ability to remember pathogens after infection and respond much quicker upon secondary and tertiary encounters.

Note: All lymphocyte types begin as naïve cells, which then differentiate into their fully matured form upon activation.

Helper T cells are a type of CD4+ T cell that has the job of activating B and T lymphocytes. There are two different types of T helper cells: Th1 and Th2. Th1 cells secrete the cytokine interferon-gamma (IFNγ), and is primarily involved with the stimulation and activation of cytotoxic T cells, while Th2 cells secrete a variety of cytokines and are responsible for activating and assisting with B cells to make antibodies. To make a long story short, Th cells interact with APC (Antigen Presenting Cells), specifically their Class II MHC (a group of genes that present exogenous proteins). The Th cells then proliferate and gain the ability to activate these APC cells and provide the necessary signals to activate B and T cells and make them proliferate and do their specific function.

You might be interested in
THE MUSCULAR
goldfiish [28.3K]

Answer:

Explanation:

THE MUSCULAR

SYSTEM

Movements YOU CAN

VOLUNTARILY and

INVOLUNTARily clo

are controued by

the muscular System

more

SMOOTU Muscles

heb operate organi

OLUNTARY

e footh you

den

CARDIAC muscles

keep the heart Png

involuntary

3

all in

your

WORK

TUN

cons

Internal

1

Skeletal muscles

+Move your bones

*Voluntary

bladder

2

Toke

turns

Contracting

& Piping

4

4

Match the word phrase with the correct place on the chart."

1

2

3

4

Constantly at Work

Stomach

Connects Bones to Tendons

Typically Work In Pairs

Answer:



Explanation:



4 0
3 years ago
Someone help me please
frez [133]
1. Two genetically identical copies of DNA

2. Finds an error in DNA, removes the incorrect nucleotide and replaces it with a correct one.

3. It is used as a copy/ "template" for replication in order to have two identical copies of DNA.

4. DNA helicase unwinds DNA double helix and Topiosomerase ensure there isn't too much unwinding.

5. Replication has a built on proofreading system - DNA polymerase removes the incorrect nucleotide and replaces it with a correct one.
5 0
3 years ago
What do people use energy for?
olga nikolaevna [1]

Answer:

it depends what kind of energy your taking about, like human energy or nonrenewable energy. If it is human energy then the option c, but if it is nonrenewable energy than b.

Explanation:

the other options aren't very logical

3 0
3 years ago
Why is there more biodiversity in a rainforest compared to a tundra?
ohaa [14]

Explanation:

because animals bacteria on n on that live in the rainforest nothing actually lives in a tundra

3 0
2 years ago
Read 2 more answers
What is biological diversity??? I have a test on It plzzz help!!!!​
damaskus [11]

Answer:

Biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.

7 0
3 years ago
Other questions:
  • In which of the following ways are DNA and mRNA similar?
    12·2 answers
  • Help I need this can anyone help please help
    13·2 answers
  • Biological scientists use a variety of methods to gather evidence, or data. If a biologist makes a diorama of a plant cell, what
    9·1 answer
  • About how many cells are in an adult human body
    14·2 answers
  • Fission is a form of
    15·1 answer
  • ___________ is a primary mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers
    7·1 answer
  • What are transitions metals
    9·2 answers
  • Quais são as meninges que revestem o Sistema Neural Central? Determine a ordem delas no sentido de dentro para fora.
    5·1 answer
  • Which of the following is an example of liverwort?<br> Sphagnum<br> Marchantia<br> Fontinalis
    12·1 answer
  • What effects does cell differentiation have? Please help I will give Brainliest.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!