The kidneys help regulate blood pressure
Indicate whether the statement is true or false
TRUE
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"Accomodation" is the process in the eye of
A. bending light rays to varying degrees by the lens. B. converting light energy into electrical signals by the retina. C. adjustment to varying light levels by altering the sensitivity of the eye. D. adjustment of the amount of light admitted to the eye by adjusting pupil diameter. E. regulation of vitreous humor volume.
Round is the dominant trait for a pea; the recessive allele produces a wrinkled pea. How can you
obtain true-breeding pea plants having round peas with the least amount of work?
a. Cross plants having round peas with plants having wrinkled peas. Select round pea plants from the progeny because they are now true-breeding. b. Cross plants having round peas with other plants having round peas. Do this for multiple generations. c. Cross plants having round peas with plants having wrinkled peas. Select round pea plants from the progeny and do a test cross to determine which parental plants were homozygous dominant. Use these homozygous pea plants as your true-breeding plants. d. Cross plants having round peas with plants having wrinkled peas. This will tell you which round pea plants are homozygous dominant and are thus true-breeding. e. It's not possible. You can only get true-breeding plants that have wrinkled peas.
Researchers once believed that mammals were born with all of the neurons they would ever have. Recent research has proven this to be untrue. Approximately how many new neurons develop in the mammalian hippocampus daily?
a. 10 b. 100 c. 1,000 d. 10,000
Media that can differentiate organisms based on colony appearance are
a. characteristic. b. selective. c. differential. d. selective and differential.