Characterize the pineal gland
What will be an ideal response?
The pineal gland is a small gland deep in the center of the brain. The pineal gland receives nervous impulses from the eye, and produces the hormone melatonin in response to darkness. Melatonin may be related to the conditions associated with jet lag and seasonal affective disorder.
Analyze and Evaluate the Concepts (Essay)
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Agricultural lands frequently require nutrient augmentation because _____
A) nitrogen-fixing bacteria are not as plentiful in agricultural soils because of the use of pesticides B) the nutrients that become the biomass of plants are not cycled back to the soil on lands where they are harvested C) land that is available for agriculture tends to be nutrient-poor D) grains raised for feeding livestock must be fortified, and thus require additional nutrients E) cultivation of agricultural land inhibits the decomposition of organic matter
Which of the following statements is NOT one of the laws of thermodynamics? Select all correct choices
A. All cells arise from pre-existing cells. B. The amount of energy in the universe is constant. C. The energy available to do work decreases as energy is transferred from one form to another. D. None of the statements in these choices is a law of thermodynamics.
Which of the following is true about antigenic drift?
A. It causes major changes in the flu virus. B. It causes minor changes in the flu virus. C. It doesn't cause any changes in the flu virus. D. None of the answers are correct. E. It results in the genome reasserting.
Which of the following is NOT an example of genetic recombination between different species in nature?
A) Bacteria that acquire foreign plasmids B) Viruses that transfer DNA between host organisms C) Bacterial transformation D) Sexual reproduction