A microtome is used to
A) view microscopic organisms.
B) slice thin sections of specimens.
C) focus short wavelengths of light.
D) manipulate tiny objects.
E) dissect cellular organelles.
Answer: B
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Allergic reactions are triggered by the production of ____ antibodies instead of ____ antibodies at the first exposure to the allergen
a. IgA; IgD b. IgA; IgE c. IgE; IgM d. IgE; IgG e. IgG; IgE
A hypertonic environment would be ideal for a healthy plant
Indicate whether the statement is true or false.
The activity of the ribosome in translation is
like a(n)
a. assembly line. b. dance. c. planet racing around the sun. d. foot race. e. chess game
In light-dependent reactions, hydrogen ions are transported into the thylakoid membrane. What drives the
movement of these ions?
a. passive diffusion of ions from high to low concentration b. passive diffusion of ions from low to high concentration c. active transport of ions driven by the hydrolysis of water into oxygen d. active transport of ions driven by energy from the electron transport chain e. active transport through the enzyme ATP synthase