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
vampirchik [111]
3 years ago
15

Extracellular pathogens such as viruses and bacteria in body fluids are attacked by _____.a. cytotoxic T cells b. antigens c. he

lper T cells d. antibodies from plasma cellse. complement proteins
Biology
1 answer:
liubo4ka [24]3 years ago
7 0

Answer:

D.antibodies from plasma cells

Explanation:

The immune system of the body helps to protect the body by fighting foreign bodies such as bacteria and virus. The immune system with the help of the antibodies which are found in plasma cells attack the foreign bodies and kill them.

You might be interested in
A species that plays a critical role in maintaining the structure of an ecological community and helps to determine the types an
amm1812

Answer:

Option A, Key stone

Explanation:

A keystone species plays a major role in an ecosystem as it is the species whose presence effects all other species in the ecosystem .In general a keystone species is always a dominant predator that feed on prey population. If it is removed, the prey population will explode and the population diversity will reduce. For example - bison, prairie dog etc.  

Hence, option A is correct

7 0
3 years ago
What do carbon dioxide, light energy, water have in common
Oliga [24]
They are all necessary for photosynthesis to occur.
3 0
4 years ago
What was one problem the printing press fixed
12345 [234]
It reduced time to copy texts and books
6 0
3 years ago
What can you infer about the history of southeastern Australia, where large deposits of coal have been found?
Novay_Z [31]

Answer:

It would most likely show that at some point Australia in that area had lots of dense forestry in that region as the abundance of forestry would be needed to be turned into coal.

Explanation: During the carboniferous the planet was covered in a large abundance of forestry that would often go into that ground and be compressed by other plant life and occasional flooding of seas and would eventually be turned into coal over millions of years.

7 0
4 years ago
If the concentration of water in the air surrounding a plant is less than the concentration of water inside the plants vacuoles
RUDIKE [14]

Answer:

<em>The water will diffuse into the air.</em>

Explanation:

Diffusion can be described as a process through which molecules travel from an area of higher concentration to an area of lower concentration along the concentration gradient. Such processes do not require energy. As the concentration of water is less in the air surrounding the cell as compared to the inside of the cell hence, the water molecules will move out of the vacuole and into the air by the process of diffusion.

3 0
4 years ago
Other questions:
  • Which statement about anaerobic respiration is true?
    6·1 answer
  • How do the bees pollinate
    14·2 answers
  • Which product of combustion contributes most to the greenhouse effect?
    6·1 answer
  • Which statement is FALSE concerning bile salts? a. They are more amphipathic than cholesterol. b. They are secreted in response
    11·1 answer
  • Two gene copies are identical by descent if
    15·1 answer
  • Which dissolved faster sugar in cup C or in cup D?
    8·1 answer
  • What is the difference between convergent plate boundaries that have plates of the same density to convergent plate boundaries w
    8·1 answer
  • The water pipe in the picture is 15 feet long. How many 15-foot pipes does a worker need to build an 85-yard water pipeline? One
    5·1 answer
  • Would the biomolecules be located on the smaller or larger end of the levels or organization
    8·1 answer
  • How many years does it take for a seed to become a fully mature coffee tree?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!