What is the role of pollen grains in plant reproduction?

Which group of organisms is most closely related to Archeabacteria? a. animalia b. fungus c. plantae d. protista

How does the Sun's energy power the water cycle? 1) Heat from the Sun's rays turns liquid water into vapor during the process of evaporation. 2) Solar flares melt glaciers. 3) Solar winds move clouds.

Complete the following rule if a child is different from both of their parents, the child must be

Aquaporin-1 exists in the cell membrane as a tetramer. Each monomer is a water channel that can hold 4 molecules of water at a time.

In a typical population of gazelle, the average birth rate is 25 new fawns each spring. However, this spring there was a significant increase in the amount of fawns birthed to 150.

The neurons are the structural and functional units of the nervous system. a. True b. False

Which statement best describes a scientific question? It must be based on a hypothesis. It must be supported by data. It must be testable. It must be original.

1. What is the end product of replication?

Oil immersion is used because it increases: A. Resolution B. Contrast C. Refracted Light D. The working distance between the lens and the specimen

One type of anaerobic respiration results in the production of