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
ELEN [110]
3 years ago
7

Which of the following are part of the body’s first line of defense against pathogens?

Biology
1 answer:
Fed [463]3 years ago
3 0

The answer is "D"

The body's first line of defense is also known as Innate immunity and incudes mucous membranes. Both the intact skin and mucous membranes of the body offer a high degree of protection against pathogens.

 A good example is the mucous membrane of the respiratory tract. It is lined up with cilia and covered with mucus. The coordinated beating of the cilia drives the mucus up to the nose and mouth where the trapped bacteria can be expelled.

(Lymph nodes and white blood cells belong to the second line of defense, not the first) 

You might be interested in
Over 95% of incoming UV-B radiation is absorbed in the stratosphere. Please select the best answer from the choices provided
kramer

Answer:

True

Explanation:

The stratosphere is the layer of the earth’s atmosphere which is above the troposphere and below the mesosphere.

The stratosphere contains about 90 percent of the ozone layer. The stratosphere is made up of ozone layers which helps in the absorption of about 95 percent of the ultraviolet rays from the sun and converting to heat.

This is the reason why depletion of the ozone layer found in the stratosphere gives rise to global warming.

5 0
3 years ago
Which of the following statements about 2,3-bisphosphoglycerate (BPG) binding is FALSE?
Kitty [74]

Answer:

The answer is C. BPG aids oxygen delivery to tissues by increasing the affinity of myoglobin for oxygen

Explanation:

The 2,3-bisphosphoglycerate (BPG) which can also be referred to as the 2,3 - di phosphoglycerate , is being produced by the red cells and has the ability to deoxygenate hemoglobin. This is because , his accumulation results to a decrease in the affinity for oxygen, this means that , it will convert hemoglobin to a low oxygen affinity state.

In this case, comparing the options given, it will be concluded that, 2,3  -biphosphoglycerate {BPG} does not aids the delivery of oxygen to tissues, but  decreases the affinity of oxygen, which deoxygenate hemoglobin, and causes the concentration of the carbon dioxide to increase.

8 0
3 years ago
Read 2 more answers
Vitamins and minerals are both
iragen [17]

Answer:

high in protein i believe.

Explanation:

7 0
3 years ago
Nutrients found in organic compounds
Serjik [45]

Answer:

Carbohydrates, Proteins, and Lipids

Explanation:

4 0
3 years ago
The vast removal of forests could affect the earth's biogeochemical cycles in all of the following ways EXCEPT:
Vanyuwa [196]
D is false it would put less oxygen into the air
6 0
3 years ago
Other questions:
  • What are made in the light reactions of photosynthesis?
    11·2 answers
  • Which determines what an organism looks like and how it grows and develops?
    12·2 answers
  • What are the three different types of protists?
    5·2 answers
  • For this journey you are miniaturized and injected into the interior of the largest bone of your host body, the
    10·2 answers
  • Riparian foliage _______.
    9·2 answers
  • A farmer always plants pea and wheat in the same field. Why do you think he does that?
    13·1 answer
  • Which of the following types of models is most likely to be used to predict earthquakes?
    7·2 answers
  • You are breeding snakes. Black skin color is (B) is dominant to red skin color (b).
    5·1 answer
  • Some frog species only have one leg.
    10·2 answers
  • How many valence electrons does this atom have? How do you know?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!