________ bonds hold the hydrogens to the oxygen within a water molecule, and ________ bonds attract one water molecule to other water molecules
A) Ionic; hydrogen
B) Hydrogen; ionic
C) Hydrogen; covalent
D) Covalent; hydrogen
E) Ionic; covalent
C
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A seed that lands in the forest soil is homozygous mutant for the CONSTANS (CO) gene, and as a result does not produce any functional CONSTANS protein. What do you predict will happen during the development of this seed?
A. It will germinate and grow vegetatively. If it is from a photoperiodic species, it will fail to produce flowers. B. It will fail to germinate. C. It will germinate and grow vegetatively, but will never produce flowers. D. It will germinate and grow vegetatively, and then it will produce flowers earlier than wildtype.
Segments of polypeptides that are retained following protein splicing are called
A) introns. B) exons. C) inteins. D) exteins. E) cleaved.
If blood transports hormones throughout the body, how do they communicate with specific targets?
A. Axonal pathfinding mediates the delivery of hormones to their specific targets. B. Special gateway valves in the blood vessels direct hormones to their target tissues. C. Only target tissues have receptors that allow them to receive the signal. D. Special carrier proteins "walk" along microtubule tracts to deliver the hormones to their targets.
Groups of operons that are regulated by the same regulatory protein are known as ________.
Fill in the blank(s) with the appropriate word(s).