How did the first people to arrive in the Americas support themselves?

1) by fishing

2) by gathering

3) by hunting big animals

4) by hunting small animals

List three diseases caused by viruses

Why does darkness affect the light-independent reactions of photosynthesis? Plants stop their daytime activities and rest during the night much like animals do.

List three type heterotrophs

Which of these cellular metabolic processes occurs in all living things? A. glycolysis B. Krebs cycle C. Electron Transport System D. photosynthesis

Compare the amount of hyaline cartilage found in an embryonic skeleton compared to a child

Which type of cytoskeletal element is described as a solid

Energy related usage in the United States makes up nearly what percentage of human-caused greenhouse emissions? A 57% B 63% C 72% D 85%

One function of the chromosomes in a cell is to A. absorb light and create energy for the entire organism. B. transport proteins throughout the cell and to other cells in the body. C. provide a location for protein synthesis inside the cell. D.

Consider the Ras signal-transduction pathway. Suppose a mutation occurred in the gene that encodes the transmembrane receptor to which a growth factor binds. The mutation no longer allows the growth factor to bind to the receptor.

Which of these have prokaryotic cells? A. snails B. bacteria C. frogs D. food