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
Suppose the cell is a semiprmeable membrane. Which of the materials will NOT pass through it ?
Marina86 [1]

The membrane is selectively permeable because substances do not cross it indiscriminately. Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot. Water can pass through between the lipids.

5 0
3 years ago
You are looking at tissue under a microscope. One cell shows half the amount of DNA of some of the other cells. This cell is mos
Leni [432]
You are looking at tissue under a microscope. One cell shows half the amount of DNA of some of the other cells. This cell is most likely to be in the G1 phase where the cell has just divided.
Hope this answers the question. Have a nice day.
8 0
3 years ago
Which type of cell-to-cell junction joins intermediate filaments ( keratins) in one cell to the basal laminate; welding down the
Alex787 [66]

Answer:

Desmosomes 

Explanation:

Desmosomes Connect Intermediate Filaments from Cell to Cell

Through desmosomes, the intermediate filaments of adjacent cells are linked into a net that extends throughout the many cells of a ti

8 0
2 years ago
Which of the following statements about air pollution is not true?
Leokris [45]
Im pretty sure the answer is c.

let me know if its correct
7 0
2 years ago
Read 2 more answers
Identify the food that is a rich source of the protein gluten.
Aleonysh [2.5K]

Answer:

boiled egg.... is the correct answer...

8 0
3 years ago
Other questions:
  • In a species of wild animal, claw size is determined by a combination of two alleles. Allele Q codes for large claws, while alle
    12·1 answer
  • Which is the best example of a hypothesis leading to new experimental
    9·1 answer
  • Which of the following organisms shows a haplonic form of sexual reproduction?
    6·1 answer
  • Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. What type of rock is coquina?
    14·2 answers
  • A group of students designed an experiment to determine the effect of compost on the germination and growth of plants. The stude
    7·1 answer
  • In the scientific name Puma concolor, Puma is consider the
    8·1 answer
  • James is working with the lac operon of Escherichia coli (E. Coli). He places the bacteria on a plate of growth media. The lac O
    8·2 answers
  • Which of the following statistical measures is most helpful for indicating the extent to
    14·1 answer
  • What is the answer pls
    12·1 answer
  • According to the cell theory, ____. Group of answer choices all living organisms are made up of one or more cells cells grow sol
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!