During contraction, muscle fibers will __________ in length but __________ in thickness
Fill in the blank(s) with the appropriate word(s).
ANS: decrease; increase
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Oxygen generally forms two covalent bonds, while carbon generally forms four covalent bonds. In
contrast, helium is inert (generally does not form any bonds). Explain the reason for the differences in chemical behavior between these three elements.
What will be an ideal response?A 45× objective and a 10× ocular produce a total magnification of
A. 145×. B. 900×. C. 450×. D. 55×.
The subatomic particle(s) with a positive charge
is(are) a. the neutron. b. the proton. c the electron. d. both the neutron and proton. e. both the proton and electron.
Eukaryotic cells are believed to have arisen
A) from a symbiotic relationship between primitive nucleated cells and bacterial cells. B) from the fusion of multiple archaeal cells into a larger, more complex cell. C) independently from prokaryotic cells. D) by mutations that lead to changes in plasma membranes, leading to internal membrane-bound organelles. E) independently from prokaryotic cells by mutations that lead to changes in plasma membranes, leading to internal membrane-bound organelles.