What stimulates ovulation?
A. Estradiol
B. FSH
C. LH
D. Testosterone
E. Progesterone
C. LH
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All of following marine microbes have hard skeletal parts that sink to the bottom, forming oceanic sediments, except
a. radiolarians. b. coccolithophores. c. foraminiferans. d. diatoms. e. fungi.
Deciduous trees in North America are dormant during winter months because ____
a. they receive no precipitation during winter b. photosynthesis cannot occur during winter c. this offers a way to survive the extended drought-like conditions d. the cold temperatures would otherwise damage leaves and buds e. they have no leaves during winter months
The three most common shapes of bacteria are:
a. Star-shaped, cubical, and spherical b. Spherical, rod-shaped, and spiral c. Cubical, spiral, and thread-like d. Rod-shaped, star-shaped, and cubical e. Cubical, spherical, and rod-shaped
Meningitis can be caused by a number of microbes, and the causative organism is often identified by microscopic observation of the cerebrospinal fluid. Identify the mismatch in the following list of organisms and the description of the microscopic observation.
A. Listeria monocytogenes; gram-negative coccobacillus with flagella B. Streptococcus pneumoniae; gram-positive flattened coccus C. Neisseria meningitidis; gram-negative diplococcus D. Enterovirus; no bacteria appear to be present in CSF E. Cryptococcus neoformans; fungal cells with a thick capsule