Which best describes the big bang theory? A. The universe is 4.6 billion years old. B. The universe is shrinking. C. Our universe is not the only universe. D. The universe is expanding.

Why do water molecules stick to each other? A. They are polar and form covalent bonds. B. They are nonpolar and form hydrogen bonds. C. They are nonpolar and form covalent bonds. D. They are polar and form hydrogen bonds.

When acetyl CoA enters the TCA it forms the 6C product citrate. This is decarboxylated to a 4C compound as it passes through the TCA cycle.

Which is a likely location for primary succession?

Hosphatidate, shown below, is a precursor in the synthesis of some lipids. identify the lipids that have phosphatidate as a precursor.

Which mutation could be passed on to future generations? a. A gene change in a liver cell b. Cancer caused by excessive exposure to the sun c. A chromosomal alteration during gamete formation d.

A haploid human cell has how many chromosones

Which population is subject to genetic drift?

Is scientific writing well organized?

Describe the three methods of preventing bacterial growth in food

The nurse is caring for multiple patients on the pulmonary unit. the nurse should question the administration of prescribed epinephrine to which patient?