A student forgot to label a beaker containing a DNA solution and a beaker containing a glucose solution. If chemical analysis was performed to identify the contents of each beaker, which of the following would be found in the beaker of DNA but not in the beaker with glucose?
A. fatty acids
B. amino acids
C. carbon atoms
D. nitrogen and phosphorus
E. hydrogen and oxygen atoms
Answer: D
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A given medium can be either selective or differential but not both.
Answer the following statement true (T) or false (F)
The male gametes (sperm) from which of the following plants require water to travel and fertilize nearby eggs? Select all correct choices
A. gymnosperms B. hornworts C. ferns D. mosses E. angiosperms
When a neuron undergoes a change in membrane potential that is proportional to (i.e., varies depending on) the strength of the stimulus given to that neuron, this is referred to as a(n)
A. graded potential. B. action potential. C. reversal potential. D. resting potential. E. equilibrium potential.
Xylem is composed of all of the following cell types except:a
tracheids. b. vessel elements. c. fibers. d. parenchyma. e. sieve tube elements