Mature human neuron (nerve) cells and muscle cells
A) become cancerous more easily than other cell types.
B) continue to divide throughout their lifetime.
C) are permanently in a state of nondivision.
D) cease dividing after a predetermined number of cell generations.
Answer: C
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Active immunization of a population will raise the general level of herd immunity.
Answer the following statement true (T) or false (F)
____ have four pairs of walking legs attached to their cephalothorax and no antennae
a. Ticks and mites b. Insects c. Crustaceans d. Myriapods e. Arachnids
Which of the following statements is true of archegonia?
A) They are the sites where male gametes are produced. B) They may temporarily contain sporophyte embryos. C) They are the same as sporangia. D) They are the ancestral versions of animal gonads. E) They are asexual reproductive structures.
Which of the following has the phases of the Calvin-Benson cycle in the correct order, starting with the entry of ribulose 1,5-bisphosphate?
A. Regeneration phase, carboxylation phase, reduction phase B. Reduction phase, carboxylation phase, regeneration phase C. Carboxylation phase, regeneration phase, reduction phase D. Carboxylation phase, reduction phase, regeneration phase