A ________ is a group of organisms related by descent.

The movement of water across biological membranes can best be predicted by

You are evaluating the equilibrium of a patient. You ask them to stand with eyes closed, feet together and arms at sides. The patient looses their balance. They have a positive:

In the late fall, bats hibernate in clusters with many bats pressed together and holding on to one another. Which of the following supposed advantages of huddling behavior is, in reality, not true?

All of the following cell types are correctly matched with their functions except

The following questions refer to the diagram of an embryo sac of an angiosperm shown in Figure 38.1.Figure 38.1Based on Figure 38.1, which cell(s), after fertilization, give(s) rise to the embryo plant?

Up to the eight-cell stage, the blastomeres of a mouse embryo can each form a complete embryo if isolated. This indicates that _____.

All of the following are plant adaptations to life on land except

All of the following are adaptations that help reduce water loss from a plant except

One difference between the blastula and gastrula stages of development is that _____.