Which system relies on the activity of both skeletal and smooth muscle?
a. skeletal
b. sensory
c. respiratory
d. nervous
e. endocrine
ANSWER: c
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Unsaturated fatty acids are those containing carbon-carbon ________ bonds.
Fill in the blank(s) with the appropriate word(s).
The phase at the end of an action potential when the membrane potential becomes more negative than it is at rest is the ________ phase.
A) threshold B) depolarizing C) repolarizing D) hyperpolarizing E) refractory
When both dominant and recessive alleles are present within a single nucleus, the organism is for the trait
a. diploid b. haploid c. homozygous d. heterozygous
Enzymes work by _____.
a) lowering the activation energy of a reaction and thus speeding up the reaction b) changing the free energy of a reaction and thus speeding up the reaction c) raising the activation energy of a reaction and thus speeding up the reaction d) lowering the delta G of a reaction and thus speeding up the reaction e) raising the delta g of a reaction and thus speeding up the reaction