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Roman55 [17]
3 years ago
10

Identify how the physical barriers of the the immune system protect the body against pathogens

Biology
1 answer:
BabaBlast [244]3 years ago
7 0

Answer:

They help to stop harmful germs from entering the body

Explanation:

  • The skin can prevent bacteria and microorganisms from entering the body (unless it is damaged)
  • Mucous membranes line the mouth and nose and are coated with secretions that fight microorganisms and harmful bacteria
  • Tears help to clear debris from the eye to prevent infection
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True or false?
Roman55 [17]

Answer:

True

Explanation:

3 0
2 years ago
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You observe a species of bird that, upon hatching, has contact with its parents only while being fed. you also never hear the pa
pshichka [43]
You observe a species of bird that, upon hatching, has contact with its parents only while being fed. You also never hear the parents sing during the feeding process. What would you propose about song production in this species of bird?
A. Song learning in this species is most likely learned behavior.
B. The period of imprinting is likely later in the bird's life.
C. This species does not hear.
<span>D. Song production in this species is most likely innate behavior.

the answer is d im pretty sure


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3 0
3 years ago
What is the term from reaction in which a substance gains electrons?
Aleksandr-060686 [28]
Reduction 

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8 0
3 years ago
How many electron pairs are shared between carbon atoms in a molecule that has the formula C2H4?
Rom4ik [11]
There are 4 electrons altogether shared between carbon atoms in a molecule of C2H4, to be more precise there are 2 electron pairs shared between the carbon atoms.
7 0
3 years ago
Determination of Caloric Content of Three Foods1. Compare the calorimeter that you built to a bomb calorimeter. How are they sim
yulyashka [42]

Answer:

The answers to both parts (1 and 2) are given below.

Explanation:

1. The calorimeter is similar to the bomb calorimeter in a way that both measure the changes in heat that occur as result of the chemical reaction taking place inside them. They are different in the sense that a bomb calorimeter provides an isolated system with constant volume and pressure, whereas a regular calorimeter allows pressure to equalize with the environment.

2. Carbohydrates are the molecules that break down and provides energy for cellular functions. Whereas, proteins are not meant for the production of energy but for the production of amino acids to function as structural units for protein synthesis. Simply, the breakdown of protein is for the synthesis of more proteins by providing several units of amino acids rather than the production of energy.

5 0
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