What makes a nutrient an essential nutrient to plants?
A. It is required for photosynthesis or respiration.
B. It is required for normal growth and reproduction.
C. It is part of photosynthetic structures.
D. It is needed in large quantities by all plants.
Ans: B. It is required for normal growth and reproduction.
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A diagnostic test for M. tuberculosis exposure
A) utilizes an inflammatory reaction that occurs if there has been previous exposure to M. tuberculosis antigens. B) relies on previous tuberculin vaccination. C) uses an antiserum to detect antibodies in the blood that are only formed if there has been previous exposure to M. tuberculosis antigens. D) relies on an innate immune response that occurs only if there has been previous exposure to M. tuberculosis antigens.
The trunk is composed of what?
What will be an ideal response?
A monohybrid cross involves how many different traits?
A. 1 B. 2 C. 3 D. 4
Which of the following statements concerning enzymes is FALSE?
A. They are usually, but not always, proteins. B. They always function best at 37°C. C. They can be denatured if the pH of their environment is too high or too low. D. They form a temporary intermediate compound with a substrate. E. They can be used to catalyze a chemical reaction over and over again.