If an athlete is burning glucose only, what is the ratio of oxygen consumed to carbon dioxide that will be produced?C6H12O6 + 6O2 ? 6CO2 + 6H2O
A. 1:1
B. 2:1
C. 1:6
D. 6:1
E. 1:2
Answer: A
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Water loss from a terrestrial insect's surface is minimal due to which of the following structures?
A) chitin and the cuticle B) tracheae and spiracles C) a proteinaceous epidermis D) a long alimentary canal
Which statement about abiotic factors in aquatic biomes is true?
a. Movement affects the availability of nutrients in both rivers and oceans. b. The numerous photosynthetic organisms in abyssal zones require sunlight. c. Chemosynthetic bacteria are found primarily in brackish water. d. Dissolved solids are found in oceans but not rivers.
Which components of an atom have negative
charges? I. electrons II. protons III. neutrons a. I only b. II only c. III only d. I and II e. II and III
All of the populations of different species that occupy and are adapted to a given area are referred to
by which term? a. biosphere b. community c. ecosystem d. niche e. habitat