Whales appear to be most closely related to cows based on the presence of specifically shaped in the feet of ancient whale ancestors.

Ferrous iron (Fe2+) oxidation generally occurs in environments with

A) alkaline conditions. B) high H+ concentrations. C) high oxygen content. D) little or no light present.

Which bone is broken most often?

a. humerus b. radius c. ulna d. clavicle e. scapula

Actin filaments are stabilized by

a. cofilin. b. gelsolin. c. thymosin. d. tropomyosin. e. fimbrin.

Large carbohydrates, such as starch and glycogen, are polymers. What monomers compose large carbohydrates?

A. Fatty acids B. Nucleotides C. Monosaccharides D. Amino acids