If you were to include all of your college campus, the buildings, the parking lots, the walkways, the green areas, the students, the staff, the various other living organisms living there, you would be describing a(n)
a. ecosystem.
b. population.
c. biosphere.
d. community.
e. sere.
A
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The role of the antenna complex in a photosystem is to
A. transfer excited electrons to the primary electron acceptor. B. generate glucose. C. generate NADPH. D. capture photons from sunlight.
Kinesin is a motor molecule that is characterized by
A) activation of sliding in flagellar microtubules. B) sliding along actin in sarcomere. C) motion toward the "plus" end of the microtubule. D) motion along actin filaments. E) motion toward the "minus" end of the microtubule.
Which of the following statements about the compound eyes of arthropods is false?
a. Their sensitivity is decreased in dim light. b. They can detect flickers up to a frequency of 200 or more per second. c. They produce a composite image. d. They are sensitive to red and UV light. e. They appear faceted.
Which sequence of structures through which water passes into a root is correct?
A) guard cell, endodermis, cortex, xylem B) root hair, cortex, xylem, endodermis C) epidermis, cortex, endodermis, xylem D) root hair, xylem, endodermis, phloem