In an annual tree ring, the light wood is
a. produced each spring.
b. the remnant of the bark produced the year
before.
c. formed from crushed phloem cells.
d. produced in the winter.
e. composed of small-diameter, thick-walled cells.
Answer: a
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a. true b. false
Dense, regular tissues that connect bone to bone are called
a. muscles. b. cartilage. c. ligaments. d. tendons. e. organelles.
Which of the following describes the process of glycolysis?
a) It requires ATP and NADH. b) It represents the first stage in the chemical oxidation of glucose by a cell. c) Glycolysis produces 30 ATP from each molecule of glucose. d) Glycolysis occurs in the mitochondria. e) It converts one glucose molecule to two molecules of pyruvate and carbon dioxide
In covalent bonds, ____.
A. atoms share electrons B. atoms give up electrons C. atoms accept electrons D. electrons cannot be shared equally E. electrons are always shared equally