Once a pathogen has infected the host, ________ is a measure of the pathogen's ability to spread to adjacent or other tissues.
Fill in the blank(s) with the appropriate word(s).
invasiveness
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Most moss gametophytes do not have a cuticle and are 1-2 cells thick. What does this imply about moss gametophytes and their structure?
A) They use stomata for gas exchange regulation. B) They can easily lose water to, and absorb water from, the atmosphere. C) Photosynthesis occurs throughout the entire gametophyte surface. D) They have branching veins in their leaves.
Which of the following pairs perform essentially the same function in cells?
A. aquaporins and contractile vacuoles B. plasma membranes and cell walls C. turgor pressure and proton pumps D. electrochemical gradient and osmosis
Which of the following is not a monosaccharide?
a. glucose b. fructose c. deoxyribose d. starch e. ribose
Bipedalism is most highly developed in
a. hominoids. b. apes. c. humans. d. monkeys. e. prosimians.