Which of the following depends on bacteria?

a. conversion of dead organic matter to fossil fuel

b. photosynthesis

c. dissolution of phosphates from rock

d. nitrogen fixation

During an experiment on frog embryos, a scientist removes a few cells from the neural tube. What effect would this have on the embryo

The word carbohydrate is derived from carbon and hydrate (water). Explain why this combination correctly describes this chemical group?

Why might it be advantageous for a storage polysaccharide to have a branched-chain structure instead of a linear structure?

The primitive atmosphere of earth may have favored the abiotic synthesis of organic molecules because it:

How do lipids mainly function living organisms

A victim of a physical assault who relives the event repeatedly in his or her mind may be suffering from

What are the four weak (noncovalent) interactions that determine the conformation of a protein?

A student creates a Gram stain on a bacterial sample that has a mix of gram-negative and gram-positive organisms. The student accidentally forgets the decolorizer step. What would the outcome of the Gram stain be? a.

What are enzymes important for

What are the 2 air masses that directly affect rainfall and climate in California