To which of the following is a salamander most closely related?
a) lizard.
b) snake.
c) shark.
d) toad.
e) mole.

You arrive late to a biological seminar. however, just as you enter the room, you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule. immediately, you know that they are talking about a: ]

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes