What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two don't actively share an electron?
A) ionic bond
B) covalent bond
C) hydrogen bond
D) disulfide bond
E) hydrophobic bond
C
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A DNA library is
A. a collection of recombinant vectors containing DNA fragments of a given organism. B. a collection of books about clones. C. a line of bacteria that contains a DNA fragment of interest. D. a series of restriction enzymes that can be used to produce a variety of sizes of DNA fragments. E. a collection of recombinant plasmids containing a particular gene from many different organisms.
Genetic evidence suggests that insects have evolved from crustaceans. What is a reason that insects
are so much smaller than crustaceans? What will be an ideal response?
What is the function of hemoglobin?
a. to transport nutrients b. to transport oxygen c. to transport carbon dioxide d. to transport oxygen and carbon dioxide e. to transport wastes
Identify the labeled structures in the cross section of a human penis in the picture.
What will be an ideal response?