How did the earliest single celled microorganisms produce energy to drive metabolic processes?
A. Aerobic cellular respiration.
B. Anaerobic cellular respiration.
C. Sulfuric acid respiration.
D. Both aerobic and anaerobic cellular respiration.
E. Sulfuric acid, aerobic and anaerobic respiration.
B. Anaerobic cellular respiration.
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In a person with the genotype XXY, we can tell that nondisjunction took place in the mother
A. true B. false
Unlike endurance training, weight lifting will convert ____
a. slow muscle fibers to fast muscle fibers b. fast muscle fibers to slow muscle fibers c. fast muscle fibers from the anaerobic to the aerobic type d. fast muscle fibers from the aerobic to the anaerobic type e. fat to muscle fibers
Burning coal produces sulfur dioxide in the atmosphere. When combined with rain that falls into bodies of water, this leads to
A. no change in the pH level of the water. B. an increase in pH level of the water. C. a decrease in the pH level of the water. D. a greater concentration of OH- ions in the water.
What is a population?
A) a group of organisms living in a particular geographic area B) a group of organisms of the same species living in a particular geographic area C) a community as well as all the abiotic factors in a particular geographic area D) all of the organisms of a species existing at a particular time