Sweating to keep cool in the summer is the result of ____
a. hydrogen bonds breaking to release energy
b. hydrogen bonds forming, which requires energy
c. evaporation of water giving off energy
d. cohesion of water molecules giving off energy
e. cohesion of water molecules requiring energy
ANSWER: a
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If yeast cells are incubated under anaerobic conditions, the pyruvate they produce is converted to
lactate. __________________ Indicate whether the statement is true or false.
What does a positive result mean?
What will be an ideal response?
To calculate the semi-partial correlation of Coconut Milk household purchases CMi and Salami Deli Meat household purchases Si controlling for household income Yi, (i.e., pCorr(CMi,Si(Yi)), which of the following regressions will be run:
A. CMi = b0 + b1Yi + ei B. Si = b0 + b1Yi + ei C. CMi = b0 + b1Si + ei D. Si = b0 + b1CMi + ei
Why was Charles Darwin initially puzzled by the observation that worker bees die when they sting an intrud-er to their hive? (The bee's stinger is ripped from the bee's abdomen, causing a fatal injury.)
a. All defensive behaviors result in the guaranteed destruction of the defender. b. Such self-sacrifice is widespread in many different groups of animals. c. He found it hard to imagine how such behavior could evolve, as a defending worker's chance of survival is zero. d. The stinging apparatus appeared to be too complex to have evolved.