Question

Question 1 (1 point)
Which term is considered the body's first line of defense against infection?

Question 1 options:

pancreas


white blood cells


fever


skin

Question 2 (1 point)
How do mucus membranes protect the body from pathogens?

Question 2 options:

They act as a waterproof barrier to entry


They produce sticky mucus to trap pathogenic particles


They secrete enzymes that break down bacterial cells


They produce acid to prevent pathogens from growing

Question 3 (1 point)
What do antibodies do?

Question 3 options:

attach to cells with the corresponding antigen


produce antigens


produce immature cells that become B cells


engulf and destroy pathogens

Question 4 (1 point)
A human's immune system detects a cell with an antigen that the immune system recognizes as belonging to the body.
How will the immune system most likely respond to this situation?

Question 4 options:

by leaving it alone


by tagging it for destruction


by producing antibodies


by engulfing it with a macrophage

Question 5 (1 point)
How does treatment for a bacterial infection differ from treatment for a virus?

Question 5 options:

Viruses, not bacterial infections, can be treated with antibiotics


Both types of diseases can be treated with antibiotics


Viruses can be treated with antiprotist medications


Bacterial infections, not viruses, can be treated with antibiotics

Answer 1

Here are the correct answers for each question:

### Question 1
**Answer: skin**
The skin is considered the body's first line of defense against infection.

### Question 2
**Answer: They produce sticky mucus to trap pathogenic particles**
Mucus membranes protect the body by producing mucus that traps pathogens.

### Question 3
**Answer: attach to cells with the corresponding antigen**
Antibodies attach to cells that have the specific antigens they are designed to recognize.

### Question 4
**Answer: by leaving it alone**
The immune system typically recognizes cells with self-antigens and leaves them alone, as they belong to the body.

### Question 5
**Answer: Bacterial infections, not viruses, can be treated with antibiotics**
Antibiotics are effective in treating bacterial infections but not viral infections.

If you have any further questions or need additional information, feel free to ask!