A way of making multiple copies of a segment of DNA from a single template is known as ________.
Fill in the blank(s) with the appropriate word(s).
PCR (polymerase chain reaction)
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Which of these is not a possible function of trichomes?
A. reflect light from leaf surfaces B. store or secrete salt C. defend against insects D. structural support E. irritate potential herbivores
Which of the following best describes fertilization in the moss life cycle?
a. Pollen is blown by the wind to a female cone, where it forms a pollen tube that grows toward where the egg will form. b. Flagellated sperm swim in a film of water on the surface of the plant to reach an egg. c. Flagellated sperm are blown by the wind to a location near an egg, and then swim through plant fluids to reach the egg. d. Flagellated sperm swim through plant fluids to reach an egg. e. Flagellated sperm attach to the moist skin of certain animals and are transferred to the surface of the plant to reach an egg.
Imagine that you own a nursery and you want to reduce the chance that plants you ship will suffer
from shipping damage. Which type of plant hormone should you apply to the plants before shipping?
a. cytokinins b. abscisic acid c. oligosaccharins d. gibberellins e. ethylene
A bowl of sugar water is very stable. In a cell, however, it is rapidly broken down into carbon dioxide and water, releasing stored energy. What is the best explanation for this observation?
A. Enzymes in the cell catalyze the breakdown of the glucose. B. Cells use energy to break down the glucose. C. Glucose is only broken down while dissolving into a watery solution, such as inside the cell. D. Glucose cannot be broken down outside of a cell. E. Glucose becomes more chemically reactive inside of a cell.