A small seed may grow into a very large tree. As the tree grows, it adds a great deal of mass. Where does most of this mass come from?
A) air
B) soil
C) water
D) sunlight
Answer: A
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This photograph illustrates micropropagation, a form of artificial reproduction in plants. Which of these is unlikely to be an application for micropropagation?
a. preserving plants vulnerable to extinction
b. growing plants for experiments in labs
c. mass-producing grain for famine relief
d. breeding plants with pharmacological value
Organisms that are used to decontaminate soils ____
a. cannot store pollutants in their tissues b. cannot release pollutants into the air c. do not degrade pollutants d. typically die from the pollutants e. release pollutants into the air and/or degrade the pollutants
____ is NOT an event of telophase.
A. Uncoiling of chromosomes B. Disappearance of spindles C. Nuclear membranes forming to create daughter nuclei D. Breaking down of nucleoli
How do you define a polymerase?
A. It is an enzyme that catalyzes the formation of nucleic acids. B. It is an enzyme that slows the formation of DNA. C. It is an adhesion molecule. D. It is an enzyme that blocks the formation of nucleic acids. E. It is a ribosome that catalyzes the formation of nucleic acids.