Homologous chromosomes become attached to either ____ in prophase I.
A. sister
B. spindle pole
C. nucleus
D. chromosome
E. chromatid
Answer: B
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Heavy metals are effective antimicrobial agents but are not widely used because of their high toxicity to humans.
Answer the following statement true (T) or false (F)
Organisms sense and respond to changes both inside and outside the body by way of
a. metabolism.b. photosynthesis. c. receptors. d. catabolism. e. anabolism.
Hiking up an elevational gradient, you notice different species of birds becoming more dominant the higher you go. This could be because
A) older birds prefer lower elevations. B) competitive abilities change along environmental gradients. C) of population cycling. D) there are more predators at higher elevation.
Carbon dioxide is one product of a metabolic process, which occurs in both plants and animals. This process is called
a. catalysis. b. glycolysis. c. respiration. d. photosynthesis.