The type of support illustrated in the accompanying figure is a(n):
a. hydrostatic skeleton.
b. exoskeleton.
c. integumentary system.
d. epidermal skeleton.
e. endoskeleton.
a
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________-form DNA spirals to the right and is the major form of naturally occurring DNA molecules.
A) A B) B C) D D) Y E) Z
An inoculating loop or needle is sterilized in a flame or incinerator:
What will be an ideal response?
Lamprey populations introduced into the Great Lakes have grown dramatically. Why?
A) Competitive species have driven them from the ocean. B) Fishers have intentionally introduced them with the hope of farming them for "eel skin." C) They have no natural predators in these waters. D) Lamprey stocking programs have been highly effective. E) A fish species that they naturally prey upon has recently been introduced into the Great Lakes.
List and explain five types of techniques that can be used to identify unknown microorganisms.
What will be an ideal response?