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_________-the basic building block of proteins; made of a central carbon, a carboxyl group,an amino group, and an -R group; only the side group differs in each structure.

Bacteria that are unable to survive in the presence of oxygen are called ____.

In the soil, some ______ convert nitrogen to a form that can be used by plants.

_____________-the action of bending, especially the bending of a limb or joint

For most products, what type of relationship exists between the price of a particular product and the quantity demanded?

Bacteria and archaea are the only organisms characterized as

__________-the chromosomes of a cell, usually displayed in a systematic arrangement of chromosome pairs in descending order of size; this can be used to study abnormalities, mutations, etc

_________________-tiny, smooth muscles attached to hair follicles; contraction causes hair to stand upright Sebaceous gland

The term anaerobic means _____.

Pairs of rod-shaped bacteria are called