A surge in the level of LH indicates that ________ is about to occur
A) ovulation
B) puberty
C) the testosterone peak
D) the progesterone peak
E) menstruation
A
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In general, communities that characterize a biome are
arrays of species that are adapted to a. specific temperatures. b. patterns of rainfall. c. soil type. d. each other. e. all of these.
DNA barcoding:
A: is a type of reverse genetics. B: is the most commonly used type of DNA fingerprinting used by the FBI. C: attempts to provide a unique sequence identifier for all life forms. D: is based mainly on repetitive DNA. E: is used for prenatal genetic screening.
A Gram-positive psychrotrophic rod ________ is a frequent contaminant of dairy products and meat and survives phagocytosis.
A. Escherichia coli B. Mycobacterium leprae C. Clostridium perfringens D. Bacillus thuringiensis E. Listeria monocytogenes
In the life cycle of bryophytes and seedless vascular plants, meiosis takes place in the
a. gametophyte. b. sporangium. c. archegonium. d. zygote. e. antheridium.