Which process is absolutely necessary for asexual cellular reproduction to occur in eukaryotes?
a. prokaryotic fission
b. mitosis
c. meiosis
d. doubling of chromosomal number in descendent cells
e. growth factor activation
ANSWER: b
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The coast redwood (Sequoia sempervirens) occurs naturally in a strip of habitat about 450 miles long and 5–35 miles wide from southwest Oregon along the coast to just south of Monterey, California
What aspect of the population ecology of the coast redwood does this statement describe? What will be an ideal response?
Severe acute respiratory syndrome (SARS)
A. is classified as an opportunistic infection. B. causes high fever, pneumonia, and respiratory distress. C. began with an initial outbreak in the United States and then spread to Canada and China. D. is caused by the respiratory syncytial virus.
Which of the following DNA sequence elements coordinates the expression of nonadjacent genes in eukaryotes?
A) activation domains B) response elements C) epigenetic sequences D) coactivating elements E) DNase I hypersensitive sites
Which hormone(s) stimulate(s) the epiphyseal plate (growth plate)?
Growth hormone Thyroid hormone Sex hormones All of the above