Recall the experiment on ant navigation. To run a controlled experiment, what parameters were held constant for the test group of 75 ants?
A) stride number
B) leg length
C) stride number, leg length, and environmental temperature
D) all variables except leg length
Answer: D
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One of the following drugs blocks cell division because it stabilizes the microtubules. What is this drug, and for what is it used?
A) vincristine; bacterial infections B) vinblastine; antimitotic therapy C) taxol; breast cancer D) nocodazole; allergies E) benzimidazole; colchicine
Mutations in different types of aquaporin proteins lead to a variety of clinical manifestations, such as diabetes
insipidus, epileptic seizures and cataracts. What best explains the differences in the conditions caused by these mutations?
a. Different types of aquaporin proteins allow different rates of water diffusion. b. Different aquaporin proteins are localized to different membranes in the cell. c. Different types of aquaporin proteins are produced in different cell types.
a. Different types of aquaporin proteins allow different rates of water diffusion. b. Different aquaporin proteins are localized to different membranes in the cell. c. Different types of aquaporin proteins are produced in different cell types.
__________ are electrically excitable cells that signal other cells by means of chemical messages. Fill in the blank(s) with the appropriate word(s)
In the process of aerobic respiration, nitrate can function as the terminal electron acceptor in the
electron transport chain. __________________ Indicate whether the statement is true or false.