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
tensa zangetsu [6.8K]
3 years ago
13

The specific defenses of the immune system include a variety of cells that circulate in the blood and that make up organs such a

s the spleen and thymus. How are the cells of the immune system able to differentiate pathogens from the cells of the body?
A. The cells of pathogens are much smaller than human body cells.
B. Pathogens move through the body, while human body cells are stationary.
C. Pathogens contain foreign molecules, or antigens, on their outer surface.
D. Pathogens release foreign molecules, or antigens, when cells of the immune system approach them.

Biology
1 answer:
Llana [10]3 years ago
8 0

Answer:

C. Pathogens contain foreign molecules, or antigens, on their outer surface.

You might be interested in
What is overproduction?
Pepsi [2]
The answer is C. More offspring are produced than can survive.
4 0
3 years ago
Read 2 more answers
If a couple has a one-in-four risk of having a child with an inheritable disease,<br>then​
Blizzard [7]

Answer:

It's C.

Explanation:

The punnet square is for the DNA makeup of any child with that mix of genetic information.  Therefore, all children will have the same chance of inheriting the disease, no one has a higher or lower risk.

7 0
3 years ago
Why is maintaining homeostasis important to organisms? Question 16 options: Their internal environment must provide their cells
saw5 [17]

Answer:They must keep their internal environment within a narrow range of conditions.

Explanation:

7 0
2 years ago
Which specialized cells act as a barrier to protect tissues within the body
marshall27 [118]
Epithelial cells protect tissues
7 0
2 years ago
Read 2 more answers
What are the four different types of deserts?
Kobotan [32]

Answer:

Explanation:

Name Type of Desert Location

Antarctic Polar Antarctica

Arctic Polar Alaska, Canada, Greenland, Iceland

Sahara Subtropical Northern Africa

8 0
3 years ago
Read 2 more answers
Other questions:
  • protein pumps actively transport ions across a cells plasma mebrane. what molecule directly supplies the energy requires for the
    9·1 answer
  • Lymphatic vessel ____________ cells are different from blood vessel cells.
    12·1 answer
  • Evolutionary advancement of arthropods over platyhelminthes
    5·1 answer
  • The emission of radioactive particles by isotopes as they change into other elements over
    12·2 answers
  • How do the highlighted valve cusps function during a ventricular contraction?
    14·1 answer
  • When a scientist is conducting research about all the plants and wildlife in the Mojave Desert as well as the desert’s resources
    8·2 answers
  • Mendel study seven traits in P plants. What are the mono hybrid crosses he made it was between plant with round seeds and plants
    9·2 answers
  • Which of the following data could best support the claim that species B arose from a speciation event in Lake I?
    12·2 answers
  • Which vessel sends blood back to the heart?​
    10·1 answer
  • During which stage of the cell cycle does the<br> replication of DNA take place?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!