Which of the following does not affect microbial nucleic acids?
A. Formaldehyde
B. Ultraviolet light
C. Ethylene dioxide
D. Moist heat
E. X rays
Answer: D
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Information from experiments is considered valid if
A. the same results are obtained each time the experiment is performed. B. the results were predicted by the hypothesis. C. the same results are obtained by several scientists. D. All of these statements are true.
Plants such as peppermint and sage contain oils. What is the function of these oils?
A. They help keep the plant from drying out. B. They keep other plants from germinating nearby. C. They help repel insects. D. They have hormone-like activity that helps wounds heal. E. They prevent fungal infection.
Only glucose can be used for cellular respiration.
Indicate whether the statement is true or false.
The direction in which a plant cell expands depends on the arrangement of cellulose microfibrils in its cell wall.
Answer the following statement true (T) or false (F)