Which ion is pumped out of guard cells in order to increase their turgidity?
a. H+
b. Ca2+
c. Na+
d. K+
Ans: a. H+
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________ is the ability to distinguish two objects that are close together as separate. When using a light microscope, this ability is determined by ________.
Fill in the blank(s) with the appropriate word(s).
Which is not a density-dependent, growth-limiting factor?
a. predation b. drought c. parasitism d. competition e. disease
Proof that a microbe could cause disease was provided by
A) Pasteur. B) Lister. C) Koch. D) Wasserman. E) Semmelweis.
Use the terms provided below to fill in the blanks. Not all words or phrases will be used; each word or phrase may be used more than once
Photons from sunlight that are in the ______________ wavelength range are preferentially absorbed by chlorophyll molecules to raise the energy levels of electrons in the __________ ring. The __________ reflected are lower in energy, which is indicated in the ________, green wavelengths detected by the human eye. benzene longer porphyrin blue orange red electrons photons shorter heme Fill in the blank(s) with correct word