To determine the effects of caffeine on memory formation, Professor Mulligan gives one group of students a cup of caffeinated coffee and a separate group of students a cup of decaffeinated coffee. Thirty minutes later, he administers a memory formation task to both groups. The coffee in this experiment (both caffeinated and decaffeinated) represents the ________ .
a. control group
b. independent variable
c. experimental group
d. dependent variable
e. confounding variable
b. independent variable
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How many hydrogen bonds are formed between adenine and thymine?
a. 1 b. 2 c. 3 d. 4 e. 6
Sickle-cell disease is a disorder that results in malformed hemoglobin molecules. What is the result of this in terms of hemoglobin function?
A. Hemoglobin has an increased ability to bind to and transport oxygen in red blood cells. B. White blood cells begin to pick up hemoglobin molecules instead and this decreases their ability to function in the immune system as intended. C. Hemoglobin has an increased ability to bind to and transport carbon dioxide in red blood cells. D. Hemoglobin has a reduced ability to bind to and transport oxygen in red blood cells.
Which of the following would be affected when a protein is denatured?
a. primary structure b. side chains c. tertiary structure d. amino groups
A(n) ____ allows two rival males to assess one another's strengths without engaging in a potentially damaging fight.
A. conditioned stimuli B. eusocial response C. instinctive behavior D. kinetic movement E. threat display