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.
Answer: C
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Some amoebae have a covering over their plasma membrane. These amoebae are referred to as ________ amoebae.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not a step in nonhomologous end joining?
A. phosphorylation of the Ku70-Ku80 complex B. degradation of any single-strand overhangs or hairpins from the broken ends of the chromosomes to be repaired C. binding of the Ku70-Ku80 complex to the broken chromosome ends D. binding of a kinase and a nuclease to the Ku70-Ku80 complex on the DNA E. All of the steps given occur in NHEJ.
If an individual living in a northern climate has allergies in the late summer, it is most likely
due to
a. long-day plants. b. short-day plants. c. either short-day or long-day plants. d. There is not enough information given to determine which type of plant is involved.
Self-incompatibility in flowering plants is a biochemical recognition and rejection process that prevents ____
a. both self-fertilization and self-pollination b. self-pollination and occasionally prevents self-fertilization c. self-fertilization but not self-pollination d. self-pollination but not self-fertilization e. self-fertilization and occasionally prevents self-pollination