What is the role of pollen grains in plant reproduction?

What are the tense and voice of the italicized verb in the following sentence? Your sister had gone when we arrived. A) past passive B) past active past C) perfect active

The brightness of a light is determined by

At the completion of mitosis, the nucleus of a human somatic cell has ___ chromosomes. a. 23 b. 46 c. 92 d. 184

What is the main benefit of storing all nuclear waste at a single site

The main action of antidiuretic hormone is

Which plant division has seeds with a 3n endosperm due to double fertilization?

What is a difference between systemic and pulmonary circulation? A. Systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. B.

Name the cells that are produced by the testes and ovaries

What description best explains why viruses can become more pathogenic to hosts that were not affected by the virus before?

The chief force pushing water and solutes out of the blood across the filtration membrane is A) the ionic electrochemical gradient B) protein-regulated diffusion C) glomerular hydrostatic pressure D) the size of the pores in the basement membrane of