14. Stroma is a component of
a. mitochondria.
b. chloroplasts.
c. lysosomes.
d. peroxisomes.

15. Which of the following organisms produces toxins that target cholesterol?
a. Aeromonas hydrophila
b. Escherichia coli
c. Streptococcus pyogenes
d. Corynebacterium diphtheriae

16. The intracellular fluid has a high concentration of
a. sodium.
b. potassium.
c. bicarbonate.
d. sulfate.