The ecological footprint is an attempt to quantify the amount of land required to provide _____ for its citizens (select all that apply)?
A. energy
B. food
C. materials
D. services
E. None of the above.
A,B,C,D
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Plants have developed both cuticles and crassulacean acid metabolism (CAM) in an attempt to limit which of the following?
A. photorespiration B. excess photosynthesis C. PEP carboxylase loss D. water loss
A scientist is examining motile protist. He wishes to determine their direction of movement. Which of the following microscopic techniques is least likely to be used to view these cells?
A) light microscopy B) electron microscopy C) differential interference contrast microscopy D) fluorescence microscopy E) phase-contrast microscopy
Insulin-like growth factors can induce which of the following?
a. promoting exponential growth of the skeleton b. stimulating degradation of cartilage c. promoting protein synthesis d. promoting the mobilization of fat e. decreasing organ size
What effect does the sigma factor have on how the RNA polymerase binds to DNA?
What will be an ideal response?