The science of ____ explains the origin and persistence of life, and studies the changes in living things
a. nanotechnology
b. biology
c. pharmacology
d. mathematics
e. chemistry
b
Biology & Microbiology
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Animals that see only black and white have predominantly what type of photoreceptors?
a. rod cells b. cone cells c. dendrites d. photo discs
Biology & Microbiology
The two amino acids depicted above both have side groups (R groups) that are
a. acidic and polar. b. uncharged and nonpolar. c. basic and polar. d. positively and negatively charged and nonpolar. e. uncharged and polar.
Biology & Microbiology
Which figure, A, B, C, depicts the type of specialized excretory tubule system called the metanephridium?
1.A
2.B
3.C
Electrons are ejected from atoms in cells when organisms are exposed to ________.
A. desiccation B. ultraviolet light C. hydrogen peroxide D. ethyl alcohol E. gamma rays and X rays
Biology & Microbiology