Bacteria divide asexually by mitosis
__________________ Indicate whether the statement is true or false.
F, binary fission
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Mendel's model organism for studying inheritance was the garden pea. What are the advantages of using peas to study genetics?
_____ Garden peas are available in many varieties. _____ Garden peas have a short generation time. _____ Garden peas produce a large number of offspring with every mating. _____ Mating between garden peas can be carefully planned and controlled.
If primary production increases in an ecosystem, it would be reasonable to expect that
A. nutrients would no longer be limiting factors. B. net production would not increase. C. cellular respiration would decrease. D. the trophic web would become more complex. E. the biomass of herbivores would increase.
Feedback inhibition prevents cells from
A) the harmful effects of enzyme activation by covalent modification of unneeded enzymes. B) making products that are not needed by inhibiting the activity of enzymes in biosynthetic pathways allosterically. C) destroying enzymes by proteolytic cleavage when they are needed in biosynthetic pathways. D) accumulating unnecessary proteins. E) irreversibly inhibiting critical enzymes.
The antibodies associated with allergies primarily belong to the _______ class.
A. IgG B. IgM C. IgA D. IgE