You can be outside on an day where the air temperature is 85oF for hours without getting cold. However, you will get cold in 85oF water before too long unless you are very active. This difference is due to higher heat _____ in water relative to air.

A. radiation
B. conduction
C. convection
D. evaporation
E. transpiration


B. conduction

Biology & Microbiology

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Grana are

(a) the same as starch grains. (b) the site of ATP production within chloroplasts. (c) part of the outer chloroplast membrane. (d) contained within mitochondria and nuclei.

Biology & Microbiology

The hexameric model of DNA unwinding proposes that:

A. DNA strands are separated prior to helicase binding. B. one dimer is responsible for ATP hydrolysis. C. two dimers rotate the responsibility of ATP hydrolysis. D. three dimers rotate the responsibility of ATP hydrolysis. E. dimer conformational changes drive ATP hydrolysis.

Biology & Microbiology

Which of the following systems is NOT directly involved with regulation and maintenance of the body's chemistry? 

A. the digestive system B. the circulatory system C. the respiratory system D. the urinary system E. the reproductive system

Biology & Microbiology

Within a single motor neuron, the direction an

impulse follows is a. dendrite >>> axon >>> cell body. b. axon >>> dendrite >>> cell body. c. dendrite >>> cell body >>> axon. d. cell body >>> dendrite >>> axon. e. cell body >>> axon >>> dendrite.

Biology & Microbiology