Which of the following types of plant hormones appears to regulate the expression of genes associated
with a plant's growth responses to light?
a. salicylic acid
b. brassinosteroids
c. gibberellins
d. jasmonates
e. oligosaccharins
B
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Plasmodium falciparum is a protistan parasite, borne by mosquitoes, that constitutes a serious health problem for humans. The disease it causes is:
A. diabetes B. malaria C. yellow fever D. dengue fever E. Lyme disease
Which of the following is NOT accurate
concerning ionization? a. When one atom loses electrons, another must gain electrons. b. When an atom loses an electron, it becomes negatively charged. c. Ionic bonds form between ionized atoms. d. In the compound NaCl, Na loses an electron to become positive. e. In an ion, the number of protons and electrons is unequal
Punctuated equilibrium is:
a. a theory about the pace of evolutionary change in which rapid periods of evolutionary change are punctuated by longer periods with little change. b. a theory about the pace of evolutionary change in which long periods of evolutionary change are punctuated by short periods with rapid change. c. a way of explaining the idea of "evolution by creeps." d. a way of explaining the idea of "evolution by jerks." e. Both the first and fourth choices are correct.
Failure of the homologous chromosomes or sister chromatids to separate during either mitosis or meiosis; produces cells with abnormal chromosome numbers.
What will be an ideal response?