The disorder cri-du-chat is caused by a ____
a. deletion on chromosome 5
b. deletion on chromosome 11
c. translocation between chromosome 8 and 14
d. deletion of one nucleotide
e. third copy of chromosome 21
ANSWER: a
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Indicate whether the statement is true or false.
Four of the five animals listed below are related
Select the exception. a. lancelet b. jawed fish c. jawless fish d. tunicate e. squid
Oxidation
A) involves the removal of oxygen atoms from a molecule. B) is endothermic. C) occurs when an atom accepts electrons. D) occurs when oxygen atoms are added to a molecule and energy released. E) is rare in biological reactions.
How does a competitive inhibitor slow enzyme catalysis?
a. They bind to the substrate. b. They compete with the substrate for the enzyme's active site. c. They produce products toxic to the enzymes. d. They degrade the substrate.