Which statement about the genetic code is false?
A. Some amino acids are specified by more than one codon.
B. Every codon codes for one amino acid.
C. The genetic code is almost universal, but not quite.
D. Nucleotides are always read in groups of three.
E. There is no punctuation or spacing between codons.
Answer: B
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a. the Earth's elliptical orbit taking it closer to and farther away from the sun b. the Earth's tilt on its axis of 23.5
What binds pairs of chromosomes together?
a. linker DNA b. cohesion proteins c. histone proteins d. centromeres
Reported toxins' effects on marine phytoplankton include all of the following except
a. increased sinking rate. b. inhibited photosynthesis. c. reduced growth. d. reduced cell division. e. tumors.
Passive immunization
a. causes antibody formation. b. is the administration of already formed antibodies from another source. c. is used to prevent a person from becoming infected. d. has a long lasting helpful effect. e. is the same thing as immunotherapy.