Adaptations often give organisms a competetive edge.

a. True

b. False

What are the products of the equation for photosynthesis?

What environmental conditions induce oxygen to bind to hemoglobin?

If you immerse a living cell in a hypertonic solution, water will a. move into the cell. b. fluctuate in and out. c. remain constant. d. move out of the cell.

under a microscope, a series of cells are observed that lack membrane-bound internal organelles. which of these is the most likely cell type?

Describe the biotic and abiotic features of the tundra and two main types of tundra

What information do viral genes contain? A. directions for producing cellular proteins B. instructions for making more viruses C. instructions for DNA synthesis D. directions for invading the host cell

To conduct a phylogenetic analysis, we need an outgroup to: A. decide which characters are analogous and which are homologous. B. determine which character states are ancestral and which are derived. C.

Only homologous characters are useful in constructing phylogenetic trees. True or False

Evidence suggests that the earliest stone tools of early Homo were important for: a. protection from other hominid species b. the systematic hunting and killing of large animals (such as dinosaurs) c.

A stuffed toy with a mass of 0.900 kilograms sits on the edge of a bed at a height of 0.830 meters. If the toy falls off the bed, what will its mechanical energy be at a height of 0.500 meters? (Ignore frictional effects.) A) 0.0 J B) 3.6 J C) 7.