Which of the following do methanogens not use to form methane?
A. Phosphate
B. Acetate
C. Formate
D. Carbon dioxide
Answer: A
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The selective permeability of a cell membrane is due to ____
a. the hydrophobic core formed by the phospholipid tails b. the hydrophilic end facing the cell exterior c. glycolipids on the surface of the membrane d. the position of cholesterol in the membrane bilayer e. the hydrophilic core formed by the phospholipid tails
The breakdown of glucose to carbon dioxide and water is
A. a endergonic reaction in photosynthesis. B. an endergonic reaction in cellular respiration. C. an exergonic reaction in photosynthesis. D. an exergonic reaction in cellular respiration. E. None of the answers are correct.
List four characteristics of living things, and give an example to illustrate each
What will be an ideal response?
For approximately how long was Earth populated exclusively by microscopic organisms?
a. 2 billion years b. 500 million years c. 750 million years d. 3 billion years e. 4 billion years