Adjacent water molecules are joined by ________ bonds
A) covalent only
B) ionic
C) polar and covalent
D) hydrogen
D
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Without knowing the exact recombination frequency of the genes in this diagram, which statement can you reasonably make?
a. Genes A and C are guaranteed to be linked.
b. Genes A and B are more likely to be linked than genes B and C.
c. Genes A and B are less likely to be linked than genes B and C.
d. None of these genes are linked.
The descriptive term ectotherm, when applied to reptiles, refers to the fact that:
a. they are warm-blooded b. they derive their body heat from outside of their body by certain behaviors c. their central body core works best when its temperature is the same as the ambient temperature d. their optimum temperature for muscle contraction occurs only when the sun provides direct solar heat e. they maintain their temperature by adjusting the production of metabolic heat
Threadlike bits of protein attached to the inner surface of the nuclear envelope serve to
a. assist in molecular transport through the membrane. b. help the cell move c. aid in passage of ribosomes out of the nucleus d. anchor DNA molecules to the envelope and keep them organized. e. Stabilize the nuclear envelope.
A ________ group does not contain the most recent common ancestor.
Fill in the blank(s) with the appropriate word(s).