Which structure present in the moss life cycle is diploid?
A. Archegonia
B. Spore
C. Gametophyte
D. Protonema
E. Zygote
Answer: E. Zygote
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A physician finds that a nine-year-old male patient is entering puberty much earlier than is usual. Such a condition is most likely the result of a tumor in the _____
A) hypothalamus, producing elevated levels of testosterone B) anterior pituitary, producing elevated levels of testosterone C) testes, producing elevated levels of estrogen D) anterior pituitary, producing elevated levels of gonadotropin-stimulating hormone
A typical mutation rate for a bacterium is in the range of 10-6 to 10-9 per kbp
Indicate whether the statement is true or false.
The Five I's of studying microorganisms include all of the following except ________.
A. isolation B. incubation C. inoculation D. identification E. infection
In the Kirby-Bauer method, a large zone of inhibition means that the pathogen is
A) More likely to kill the host B) More susceptible to the antibiotic C) Less susceptible to the antibiotic D) Less likely to cause disease in any host