Fresh water has an osmolarity of
a. ~5 mOsm/L.
b. ~225 mOsm/L.
c. ~300 mOsm/L.
d. ~1000 mOsm/L.
e. ~1500 mOsm/L.
A
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DNA supercoils that result from overwinding produce ____ supercoils
Fill in the blank with the appropriate word.
The living descendants of the clade Reptilia include lizards, snakes, turtles, crocodiles, and birds
a. True b. False
Chloroplasts are not
A. found in plants. B. organelles that carry out photosynthesis. C. found in some members of the kingdom Protista. D. responsible for cellular respiration. E. glucose synthesizers.
Consider the statement “biological systems interact.” What does this mean?
a. Systems combine to reproduce. b. Biological organisms are interdependent. c. Structure and function are not interrelated. d. Biological organisms are not interdependent. e. Every organism is in conflict with other organisms