A species that has population levels so low it faces extinction in all or part of its range is designated as ____.
A. riparian
B. endemic
C. endangered
D. threatened
E. an indicator
Answer: C
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Integrins are integral membrane proteins. They are often attached to _____
A) the membranes of intracellular organelles B) cytoskeletal proteins and proteins in the extracellular matrix C) the outside of the plasma membrane D) glycogen molecules and other types of cellular inclusions
Fungi are the primary decomposers in ecosystems
What will be an ideal response?
Which of the following statements concerning phytochrome-induced responses is FALSE?
a. All responses are very rapid and short-term. b. Red light causes potassium channels to open. c. The absorption of light by one part of the phytochrome molecule triggers a conformational change in another part. d. Phytochrome activates transcription of the gene for a subunit of rubisco. e. Far-red light causes potassium channels to close.
On the enzyme there is a specific location that accommodates the substrate known as the:
What will be an ideal response?