33. Reproductive systems with external fertilization are most common in (A) terrestrial animals. (B) populations with many more males than females. (C) animals that are widely dispersed. (D) aquatic animals.

5. The cholesterol associated with animal cell membranes (A) is attached to membrane proteins and extends into the watery environment surrounding the cell. (B) helps to keep phospholipids from being too close to one another. (C) is an abnormality resulting from a diet high in cholesterol. (D) helps solidify the membranes when the room temperature is below freezing.

33. Reproductive systems with external fertilization are most common in
(A) terrestrial animals.
(B) populations with many more males than females.
(C) animals that are widely dispersed.
(D) aquatic animals.

相關試題

相關試卷