Inflammation begins when mast cells in tissue release __________, which increases blood flow and also makes
capillaries leaky to phagocytes and plasma proteins. Fill in the blank(s) with the appropriate word(s).
ANSWER: histamine
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How does vernalization alter the genetic material of plants? In other words, how does the genetic material of some plants change after exposure to the winter months? Select all correct choices
A. through chromatin remodeling B. through mutations in certain genes C. through DNA methylation D. through RNAi
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.
Evaporation of sweat helps ____ a(n) ____ body temperature
a. lower; depressed b. raise; depressed c. lower; elevated d. raise; elevated e. maintain; average
Physiological responses to chronic stress interfere
with Chapter 35 Endocrine Control 399 a. the immune system. b. sexual function. c. growth. d. cardiovascular function. e. all of these.