The sum total of all the resources we use is called the ____
a. demographic transition model
b. age-structure diagram
c. habitat
d. ecological footprint
e. transitional age
ANSWER: d
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In the geologic timescale, the sequence of eons and eras beginning with the earliest era and proceeding forward to the most recent era is
A. Cenozoic - Archean - Mesozoic - Paleozoic - Proterozoic. B. Mesozoic - Cenozoic - Paleozoic - Proterozoic - Archean. C. Paleozoic - Proterozoic - Archean - Mesozoic - Cenozoic. D. Archean - Paleozoic - Proterozoic - Cenozoic - Mesozoic. E. Archean - Proterozoic - Paleozoic - Mesozoic - Cenozoic.
Referring to the above diagram, which letter
indicates the location of chyme production?
a. A b. D c. E d. F e. G
Which of the following characteristics is(are) not a basic property of cells?
A) cells evolve B) cells generally respond to stimuli C) cells are capable of self-regulation D) cells engage in numerous mechanical activities E) cells carry out a variety of emotional reactions
What is the role of pyruvic acid in fermentation?
a. It becomes the final electron acceptor for the electron transport chain in the absence of oxygen. b. It takes the electrons from NADH, oxidizing it back into NAD+. c. It provides the protons to be used in the electron transport chain. d. It is the organic acid end-product of fermentation.