How do we know that DNA contains genetic info?

Which of the following events would most unpredictably affect an ecosystem? A. the removal of one old tree B. a mutation in a native bacteria C. the annual birth of a new generation of deer D. a rainstorm that causes minor flooding.

In which organelle are the lipid components of the cell membranes assembled

Members of which phylum of protozoa swim by using long whip-like structures

Which statement about the number of species is true kingdom contains most, a phylum contains the most, orders have the fewest, kingdom have the fewest

What does a red shift in light from stars indicate a. the stars are moving closer b. the stars qare stationary c. the stars re moving randomly d. the stars are moving farther away

What term is used to describe an animal that eats herbivores? A. primary consumer B. primary producer C. secondary consumer D. secondary producer

Basic unit of structure and function in the nervous system is called

Marie's pulse, breathing rate, and mental alertness have suddenly increased. it is likely that marie is experiencing the:

What do bears do to survive the winter? hibernate migrate eat less food i would say a. is correct sharpen their claws

Which term identifies the process used by the cell to bring in large molecules