Which of the following is an important mineral ion of the cytochrome pigments used in cellular respiration?

A. potassium
B. iron
C. calcium
D. magnesium
E. zinc


Answer: B

Biology & Microbiology

You might also like to view...

All of the following occur in a countercurrent exchange EXCEPT

a. flow in opposite directions. b. a concentration gradient. c. a large surface area. d. short contact time for exchange

Biology & Microbiology

Reefs that are separated by a lagoon from the land mass they surround are called:

a. atolls. b. fringing reefs. c. barrier reefs. d. patch reefs. e. table reefs.

Biology & Microbiology

The tortoiseshell pattern on a cat

A) usually occurs in males. B) is the result of a homozygous recessive condition. C) results from X chromosome inactivation. D) is a result of alleles on the Y chromosome.

Biology & Microbiology

Light microscopy can be used to visualise all of the following except:

a. protozoa b. viruses c. fungi d. bacteria

Biology & Microbiology