In the vertebrate eye, what structure is light focused onto?  

A.  pupil
B.  lens
C.  retina
D.  sclera
E.  iris


C.  retina

Biology & Microbiology

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Fishes that are very active swimmers have a ____ body

a. fusiform b. laterally compressed c. globular d. flattened e. dorso-ventrally compressed

Biology & Microbiology

Most antigens are monovalent.

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

Biology & Microbiology

All plants have two multicellular phases, one diploid and one haploid, a phenomenon called ____

a. alternation of generations b. double fertilization c. polyploidy d. mitosis e. dysploidy

Biology & Microbiology

Which of the following would increase the electrochemical gradient across a membrane?

A) a sucrose-proton cotransporter B) a proton pump C) a potassium channel D) both a proton pump and a potassium channel

Biology & Microbiology