A polymer coat consisting of a dense, well-defined polymer layer surrounding a cell is called a ___________

When pH levels in the blood get too low,

chemical buffers are released that return blood pH back to normal levels. This is an example of ___.

a. negative feedback b. positive feedback c. constancy d. sensory perception e. endothermal reactions

The most abundant protein on Earth is:

A. chlorophyll. B. cellulose. C. rubisco. D. water. E. keratin.

Fungal infections are generally acquired via which route?

a. Person to person b. Nosocomial c. Vector d. Inhalation of spores

Which structures can still undergo meiosis at the time of fertilization?

a. 2 b. 3 c. 2 and 3 d. 2, 3, and 5 e. 5