Which term refers to the mechanism of prokaryotic growth, DNA replication, and cell division that results in two identical daughter cells?
a. meiosis
b. binary fission
c. budding
d. mitosis
Ans: b. binary fission
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Assuming geological evidence is accurate, life on Earth may have originated
a. 14 billion years ago. b. 4.6 billion years ago. c. 3.5 billion years ago. d. 2.1 billion years ago. e. 1.2 billion years ago.
Hooker’s evening primrose keeps its flowers
closed until the early evening when they open. This is an example of
a. phototropism. b. vernalization. c. a circadian rhythm. d. photoperiodism. e. apical dominance
Cats cannot synthesize the amino acid taurine. This means that in cats, taurine
A. is an essential amino acid. B. must be stored in cellular compartments. C. is not present in their normal diet. D. is not a required nutrient.
Which pairs of hormones have opposite effects?
A) testosterone and melatonin B) progesterone and insulin C) parathyroid hormone and calcitonin D) oxytocin and prolactin