Which of the following animals is sessile?

A) jellyfish

C) planarian

B) roundworm D) sponge

The enzyme β-galactosidase catalyzes what reaction?

When an action potential arrives at the end of the axon terminal, a series of events take place that result in the release of neurotransmitter from the presynaptic axon.

Which one of the following processes could result in the net movement of a substance into a cell, if the substance is more concentrated in the cell than in the surroundings? a. osmosisb. diffusion c. active transportd. facilitated diffusione.

What benefit does an adult dog gain from being petted with long, smooth strokes? A. The dog grows to be larger. B. The dog learns to be more dominant. C. The petting makes the dog stronger physically. D. The petting reduces stress.

How is energy transferred in a steam heating system

How many crabs are in hawaii

In what situation would you want to make a gel with a higher percentage of agarose?

What did Darwin and Lamarck have in common?

What two factors show us how bright the store looks from earth

What is another term for survival of the fittest? A. Natural selection B. Adaptation c. Genetic mutation D. Variation