________ hormone stimulates the male gonads to produce testosterone and triggers ovulation in females.
A. Growth
B. Follicle-stimulating
C. Adrenocorticotropic
D. Luteinizing
Answer: D
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Which of the following compounds has the greatest potential energy?
A. Water B. Sodium chloride C. Cholesterol D. Glucose E. Alanine
Anoxygenic phototrophs grow photosynthetically only under aerobic conditions
Indicate whether this statement is true or false.
A microbiology student with a visual disability is viewing a sample of Bacillus endospores in a phase contrast microscope that is linked to an iPad. By "stretching" the image on the iPad screen, the student can increase the apparent size of the endospores. How does this manipulation affect resolution and contrast? (No software is being used to alter the image!)
A. Resolution and magnification will decrease because the screen is not as good as the human eye. B. Only the magnification can be increased; resolution and contrast are unchanged. C. Both magnification and resolution increase; contrast is unchanged. D. Contrast will improve because the microscope is phase-contrast.
Drugs called selective serotonin reuptake inhibitors (SSRIs) block reuptake of serotonin and are used to treat depression. Which of the following would occur in a patient given a SSRI?
A. Serotonin levels would decrease in the synapse. B. Serotonin levels would increase in the synapse. C. More serotonin would be released by the neuron. D. Less serotonin would be released by the neuron. E. The neuron would switch from serotonin to another neurotransmitter.