What does ionizing radiation cause in DNA?
a. faster replication
b. the formation of nucleotide dimers
c. kinks in the DNA molecule
d. breaks in the DNA molecule
e. base pair mismatching
D
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Which of the following communication signals matches the animal?
a. chemical; honeybees b. tactile; frogs c. auditory; baboons d. visual; frogs e. chemical; fireflies
The body’s first line of defense includes all of the
following EXCEPT a. intact skin. b. linings of body cavities. c. complement. d. chemical protection. e. resident populations of microbes.
Several different researchers all contributed to the study of the structure of DNA. For each of the following researchers, match their contribution.
A. Rosalind Franklin B. Frederick Griffith C. Oswald Avery D. Erwin Chargaff
If a cell contains lysosomes, what type of cell must it be?
a. a fungal cell b. a prokaryotic cell c. an animal cell d. a plant cell