The type of muscle that typically surrounds hollow tubes and organs like the stomach is
A. skeletal muscle.
B. smooth muscle.
C. striated muscle.
D. cardiac muscle.
E. voluntary muscle.
B. smooth muscle.
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Neurons tend to differ in their (select all correct choices):
A. function. B. size and shape. C. number of extensions.
The predictable change in morphological and physiological features as a function of body size is referred to as ________
Fill in the blank(s) with correct word
Why do electron microscopes have higher resolving power than light microscopes?
a. The fluorescent screen adds another magnification step. b. They are capable of producing 3-dimensional images, which light microscopes cannot do. c. Electrons have a smaller wavelength than visible light, leading to higher resolution. d. The copper grid used in electron microscopy provides enhanced resolution.
Which of the following pairs is mismatched?
A) DNA polymerase — makes a molecule of DNA from a DNA template B) RNA polymerase — makes a molecule of RNA from an RNA template C) DNA ligase — joins segments of DNA D) transposase — insertion of DNA segments into DNA E) DNA gyrase — coils and twists DNA