A ________ is used in industrial microbiology to produce microbial products that are only synthesized during log phase growth.
A. Coulter counter
B. broth culture
C. spectrophotometer
D. pour plate
E. chemostat
Answer: E
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In the absence of calcium, binding of myosin to actin is directly blocked by ______.
A. titin B. tropomyosin C. troponin D. z lines
Suppose you are testing a treatment for AIDS patients and find that 75% respond well, whereas 25% show no improvement or a decline in health. You should
A) conclude that only 75% of AIDS patients should be treated. B) begin work on developing a new drug. C) conclude that you have proven the effectiveness of the drug. D) review the results, modify the drug or the dosage, and repeat the experiment. E) discontinue experimentation with this treatment because 25% of patients did not improve.
Structural features that serve the same function in completely unrelated organisms are said to be ________ structures
Fill in the blank(s) with correct word
In birds, if the offspring require extensive care, usually involving both the male and female, they are called
A. sympatric species. B. semelparous species. C. altricial species. D. precocial species. E. iteroparous species.