The fewer muscle fibers present in a motor unit:
A. the weaker the contractions of muscle
fibers in that motor unit.
B. the greater the control over the
movement(s) that result from stimulation of
that motor unit.
C. the less likely an action potential will be
generated in the muscle fibers of that motor
unit.
D. the less likely these muscle fibers will
fatigue.
B
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Why do plants require sunlight?
A) Sunlight helps plants break down their food products so they can extract the energy stored in them. B) Sunlight energy can be used by plants to reduce the carbon atoms in carbon dioxide. C) Sunlight oxidizes carbon dioxide and water to form glucose. D) Sunlight can be used directly by plants to perform a number of physiological processes.
Mendel selected pea plants for his experiments because ____
a. the offspring are infertile b. others were also using pea plants for their experiments and this would allow data sharing c. male and female flowers are on separate plants d. they can be self-fertilized or artificially fertilized by hand e. he was told by his superior that only pea plants were suitable for experimentation
The ________ are a group within the Euglenozoa that have a unique, single mitochondrion.
Fill in the blank(s) with the appropriate word(s).
A covalent bond is likely to be polar if ________.
a. the 2 atoms sharing electrons are equally electronegative b. one of the atoms sharing electrons is much more electronegative c. it is between atoms that are both very strong electron acceptors d. The 2 atoms sharing electrons are of the same element.