An __________ species is one that is especially
sensitive to environmental change and can be
monitored to determine the health of an ecosystem. Fill in the blank(s) with the appropriate word(s).
Answer: indicator
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Which of the following is NOT true about
enzymatic regulatory molecules?
a. they allow an enzyme to catalyze many, diverse reactions. b. they may cause the enzyme to change its overall shape. c. they may enhance the activity of an enzyme. d. they may inhibit the activity of an enzyme. e. they may bind directly to an enzyme’s active site.
During the termination stage
a. a STOP codon enters the ribosome. b. release factors bind the ribosome. c. mRNA detaches from the ribosome and the polypeptide chain. d. ribosomal subunits separate. e. all of these occur.
Which cell type is phagocytic and can migrate out into body tissues to differentiate into macrophages?
A. basophils B. lymphocytes C. neutrophils D. monocytes E. eosinophils
What is the difference between a tic and a spasm?
A. A tic is caused by the inflammation of a tendon, while a spasm is just an involuntary contraction. B. A tic is caused by stretching or tearing of a muscle, while a spasm is just an involuntary contraction. C. A tic is a spasm that can be controlled voluntarily. D. A tic is a strong and very painful spasm, especially of the leg and foot. E. A tic refers to achy muscles, usually due to overexercise, while a spasm is just an involuntary contraction.