Biology, 21.05.2020 20:07, granthazenp5e9mj
Stress can be measured by the amount of a certain chemical found in saliva. Subjects must be sure to get saliva samples twice a
day at least 1 hour after eating or brushing teeth. In a study of 100 subjects, researchers tried to find a correlation between stress
levels and the wake up time of the individual. Which factor would NOT be an effective control that experimenters should add to
the experiment?
A) subjects are given the same diet
B) subjects are selected in similar age groups
C) subjects are selected with the same occupation
D) subjects are awakened at the same time everyday
Answers: 2
Biology, 21.06.2019 19:30, Britney8394
Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.
Answers: 2
Biology, 21.06.2019 23:30, brittanysanders
Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?
Answers: 2
Biology, 22.06.2019 05:30, Will1119
Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.
Answers: 1
Stress can be measured by the amount of a certain chemical found in saliva. Subjects must be sure to...
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