Which of the following would be an example of environmental resistance?
A) life span that increases with population size
B) food supply increasing along with a population
C) bacteria populations producing more toxic waste as they grow
D) slow gestation periods
Answer: C
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The autonomic subdivision of the vertebrate nervous system would innervate all but which organ?
a. intestinal muscles b. skeletal muscles c. heart d. pancreas e. liver
"Double fertilization" produces nutrient tissue by the union of ____
a. two egg nuclei and one sperm nucleus b. two sperm nuclei and one egg nucleus c. two sperm nuclei and two egg nuclei d. one sperm nucleus and endosperm mother cell nuclei e. two sperm nuclei and one endosperm mother cell nucleus
The release of cyclic AMP as a second messenger is
a response to __________ hormones. a. peptide b. steroid c. protein d. peptide and protein e. peptide, steroid, and protein
The extrachromosomal piece of DNA that can replicate itself and often carries virulence genes is known as
A. Episome B. Plasmid C. Nucleoid D. F pilus