The sodium atom contains 11 electrons, 11 protons, and 12 neutrons. What is the mass number of sodium?
A) 11
B) 22
C) 23
D) 34
Answer: C
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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
Most of the chemical compounds produced by the body are synthesized by the ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following does NOT accurately apply to the Ames test?
a. The test uses bacteria as mutagen carcinogen indicators. b. The Ames test is based on the observation that reversions CANNOT occur in mutant bacteria. c. The Ames test measures the reversion of histidine auxotrophs of Salmonella. d. The test can be used to qualitatively test potential mutagens.
Life history adaptations of ________ populations are characterized by an early age of first reproduction and short maturation time and life span.
A. K-selected B. r-selected