Which of these elements is essential to making up all organic molecules?

A. hydrogen

B oxygen

c. carbon

d nitrogen

Maintaining professional standards is a function of the ___ role.

Which endoparasite can be contracted by penetration of the skin?

Why do metachromatic granules stain purple/black when stained with methylene blue?

After nervous stimulation stops, what prevents ach in the synaptic cleft from continuing to stimulate contraction?

Sources of electrical energy include what?

What is the clinical significance of using media and other biochemical test to distinguish between similar and dissimilar bacteria?

Snakes and worms have no legs and share a similar tube-like body structure. Describe how you could determine how closely related these two types of organisms are.

Which domain (s) include species whose cells have cell walls? A. Archaea B. Bacteria C. Archaea and Bacteria D. Archaea, Bacteria, and Eukarya

In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons.

Oxidative phosphorylation is the third step in cellular respiration. It is composed of two smaller steps (electron transport chain and chemiosmosis). What molecules are donating their energy to power the proteins in the ETC?