The type of microscope that directs a beam of electrons back and forth across a specimen thinly coated
with metal is a
a. compound light microscope.
b. stereoscope.
c. transmission electron microscope.
d. scanning electron microscope.
e. scanning tunneling microscope.
D
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Which of the following questions is asked in functional genomics research?
A) What is the number of Drosophila genes? B) How does the GC content of human DNA vary across the genome? C) What is the pattern of gene expression during mouse development? D) How many introns exist in the human CFTR gene? E) How closely related are the visual pigment genes of mouse and human?
Which of the following are heterotrophic eukaryotes with a cell wall?
a. ferns b. mosses c. mushrooms d. orchids
Which of the following is the measure of the tonicity of a solution?
a. osmosis b. diffusion c. osmolarity d. active transport
Most plant proteins are incomplete, meaning they lack or have a low amount of one or more ____
a. essential amino acids b. peptide bonds c. protease enzymes d. fatty acids e. vitamins