The basic structure of a nucleotide includes ________
A) base, sugar, and phosphate
B) phosphorus and sulfur
C) amino acids
D) tryptophan and leucine
E) mRNA, rRNA, and tRNA
Answer: A
You might also like to view...
Four of the five answers listed below are conditions caused by chromosomal nondisjunction. Select the
exception. a. Down syndrome b. Huntington's disorder c. Turner syndrome d. Klinefelter syndrome e. trisomy 21
A hypothesis is:
a. a tentative explanation. b. a systematic thought process. c. an observation. d. a placebo. e. a conclusion.
Plants make ____, which are similar to female sex hormones in mammals but have nothing to do with sexual reproduction in plants.
A. oxytocin B. phytoestrogens C. auxins D. cytokinins E. gibberellins
B. F. Skinner first introduced operant conditioning experiments. What happens in these experiments?
A. An animal learns to associate its behavioral response with an instinct. B. An animal learns to associate its behavioral response with a reward or a punishment. C. An animal learns to associate its behavioral response with a fixed action pattern. D. An animal learns to associate its behavioral response with its biological clock. E. An animal learns to associate its behavioral response with a conditional stimulus.