Organisms whose metabolic processes are harmed by the presence of oxygen are called:a
obligate anaerobes.
b. facultative anaerobes.
c. facultative aerobes.
d. heterotrophs.
e. obligate aerobes.
A
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A college student walks down New York City's Fifth Avenue at 8:00 AM. She is late for class so she catches the bus for the last 2 miles of her commute. Did she have a larger ecological footprint when she was walking or when she was on the bus?
A. on the bus, because it is using energy to move B. on the bus, because the road took more energy to build than the sidewalk C. walking, because she is using energy that must be replaced by eating foods that are not locally grown D. walking, because she is moving on a sidewalk that took energy and raw materials to build E. More information is needed about, for example, the number of people on the bus and its fuel source, to accurately determine her ecological footprint in both situations.
When Tinbergen arranged pinecones around the nest of a female digger wasp but moved them when
the wasp was gone, the wasp ____.
a. never found the nest until the pinecones were replaced b. took longer to find her nest c. found the nest immediately d. abandoned the nest e. dug a new nest in the center of the repositioned circle of pinecones
How does the proton gradient help ATP synthase to make ATP?
a. Protons move along the membrane. b. Protons move from inside the membrane to outside the membrane. c. Protons move from outside the membrane to inside the membrane. d. Protons are not involved with this step; only electrons are.
________ is the most abundant class of antibodies in serum.
What will be an ideal response?