The smallest sub-atomic particle is the ______
A. ion
B. electron
C. proton
D. isotope
E. neutron
B
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If a cell's DNA becomes damaged by radiation or chemicals, it is unlikely to ____
a. pass the G2 checkpoint b. synthesize cyclin-dependent kinases c. enter G1 from mitosis d. become arrested in G1 e. activate DNA repair mechanisms
Discrete packets of kinetic energy in light are called
A. lasers. B. grana. C. photons. D. protons. E. electrons.
A genetic disease causing an abnormal attachment of muscles to the bones of the little finger is
a. syndactyly. b. polydactyly. c. campodactyly. d. multidactyly. e. extradactyly.
What is a distinct characteristic of asexual reproduction?
a. fusion of egg and sperm b. a cell splitting into identical halves c. genes contributed by two parents d. high degree of genetic variation e. formation of a fertilized egg