What are the components of nucleotides?
a. an amine group, a carboxyl, and a side chain
b. a nitrogenous base, a sugar, and one or more phosphate groups
c. a nitrogenous base, a carboxyl, and a side chain
d. an amino, a phosphate group, and a fatty acid chain
b
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A mutation in a gene that results in a defective protein product is known as a ____ mutation
Fill in the blank with the appropriate word.
Which plants are characterized by a conducting system, the possession of cuticles, specialized stems, and roots, stomata, and, in many species, seeds?
A. liverworts B. mosses C. tracheophyte D. horsetails E. club mosses
Which of the following is the least reliable form of contraception?
a. condoms b. sterilization c. withdrawal d. oral hormonal
Passing on traits or characteristics that were acquired during the lifetime of an organism to its
offspring is a concept that is attributed to: a. Alfred Wallace. b. Charles Darwin. c. Charles Lyell. d. Jean Baptiste de Lamarck. e. Thomas Malthus