During the life of a tunicate, the notochord:
a. is present throughout life
b. appears in the larva only
c. develops during adulthood
d. is completely absent
e. changes into the nerve cord
b
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If a person has a recessive allele for a disorder and that allele is masked by the presence of a normal dominant allele, this person
A. is homozygous for the disease. B. cannot produce gametes. C. has the disease but cannot pass this disease to their offspring. D. is termed a carrier. E. is termed a linkage group.
The most plentiful sugar in nature is
a. glucose. b. fructose. c. sucrose. d. lactose. e. glycogen.
Ribosomes consist of ________ separate subunits that come together as part of the initiation process and dissociate immediately after termination.
A. three B. four C. five D. two
All of the following are plant cellular levels of communication except:
A. alarm signaling B. perception C. transduction D. response E. all are plant levels of communication