The microtubules that overlap in the center of the mitotic spindle are called _______ microtubules.
a. astral
b. polar
c. kinetochore
d. central
e. minus-end
Ans: b. polar
Biology & Microbiology
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Organic molecules have a carbon backbone and _____ such as -OH and -NH2 that affect their chemical properties
A. chemical groups B. R groups C. extension groups D. functional groups
Biology & Microbiology
The ________ is the collection of microorganisms (and their genes) that are normally present in and on an organism.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
People with the disease known as sickle-cell anemia are often better able to survive malaria because of
a. balanced polymorphism. b. heterozygote advantage. c. frequency dependent selection. d. disruptive selection. e. stabilizing selection.
Biology & Microbiology
Ionic bonds form as a result of _________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology