The process of using just enough heat to kill most (but not all) of the bacteria that cause spoilage in a beverage was developed by
a) Pasteur.
b) Ehrlich.
c) Lister.
d) Koch.
Ans: a) Pasteur.
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Each of the following is known to aid in the functioning of cellular enzymes except:
A. copper. B. mercury. C. iron. D. zinc. E. magnesium.
Small animals such as insects and some lizards are able to “walk on water.” This ability is due
to the
a. strong bonds between oxygen and hydrogen atoms forming the water molecule. b. attraction among different water molecules due to the unequal attraction of electrons of hydrogen and oxygen in individual water molecules. c. bonds that form between two atoms that are oppositely charged. d. strong bonds that form between water molecules due to sharing of electrons in the same orbit.
The most common terrestrial animals are
A. birds. B. reptiles. C. mammals. D. insects.
Spore germination followed by cell divisions results in the production of
(a) a sporophyte. (b) an antheridium. (c) a zygote. (d) a gametophyte.