AP Biology Trivia 2

Question 1

What is the largest organ in the human body?

Accepted Answer

Skin

Answer

The skin is the largest organ, covering approximately 20 square feet in adults.

Question 2

How many chromosomes do humans have?

Accepted Answer

46

Answer

Humans have 46 chromosomes (23 pairs) in most body cells.

Question 3

Which blood type is considered the universal donor?

Accepted Answer

O negative

Answer

O negative blood can be given to any blood type because it lacks A, B antigens and Rh factor.

Question 4

What percentage of the human body is water?

Accepted Answer

60-70%

Answer

The adult human body is approximately 60-70% water.

Question 5

Which vitamin is produced when skin is exposed to sunlight?

Accepted Answer

Vitamin D

Answer

Vitamin D is synthesized in the skin when exposed to UVB radiation from sunlight.

AP Practice Test