The tube feet of sea stars are used primarily for

a. excretion of excess water.
b. locomotion.
c. reproduction.
d. circulation.
e. sensation


B

Biology & Microbiology

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What process is described here?  A concentration gradient of H+ ions is created in the periplasmic space by actively transporting the ions across the membrane using the energy liberated when carrier molecules are oxidized.  When the H+ ions pass through ATPase, enough energy is generated to add phosphate groups onto ADP molecules.

A. Deamination B. The Calvin cycle C. Oxidative phosphorylation D. Fermentation E. Substrate-level phosphorylation

Biology & Microbiology

The bond in table salt (NaCl) is

a. polar. b. ionic. c. covalent. d. double. e. nonpolar.

Biology & Microbiology

Identify the labeled structures of the female reproductive system.

What will be an ideal response?

Biology & Microbiology

All proteins are enzymes.

Answer the following statement true (T) or false (F)

Biology & Microbiology