One-thousandth of a meter is a
A. yard.
B. millimeter (mm).
C. micrometer (?m).
D. nanometer (nm).
E. centimeter (cm).
Answer: B
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Thermodynamics tells us that efficiency in reactions is important and determined by how much energy is lost to heat in a reaction. In the metabolism of glucose, what percentage of the energy is extracted?
a. 50 percent b. 100 percent c. 34 percent d. less than 10 percent
Which event will lead to primary succession? a. None of these choices
b. Fire burning through 100 square miles of coniferous forest. c. A volcanic eruption on a Hawaiian island. d. A farm field being abandoned. e. A river flooding its banks every spring.
Which of the following is an incorrect match?
A) Golgi apparatus- protein alteration and packaging B) ribosomes- protein synthesis C) lysosomes- cellular digestion D) mitochondria- production of cellular ATP E) smooth endoplasmic reticulum- storage of water
Application of heat to living cells can result in all of the following EXCEPT
A) breaking of hydrogen bonds. B) alteration of membrane permeability. C) denaturation of enzymes. D) decreased thermal death time. E) damage to nucleic acids.