A functional group added to a hydrocarbon usually makes the hydrocarbon:
A) polar.
B) nonpolar.
C) acidic.
D) an isomer.
E) hydrophobic.
Answer: A
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In an experiment, the development of the frontal lobe of a rat was inhibited. Predict the most likely consequence of
this procedure.
a. The rat was not able to make noises. b. The rat was unable to move. c. The rat was unable to detect touch. d. The rat was not able to process visual input. e. The rat could not hear.
Which of the following choices is the ultimate cause of the ability of male zebra finches to
discriminate between the songs of established neighbors and those of strangers?
a. Cells in a nucleus in the forebrain fire more often when the song of a new male is heard. b. Neurons cease to respond to the sound of an established neighbor. c. Zebra finches are genetically programmed to tolerate territory-holding neighbors but repel invaders. d. Zebra finches are capable of selective learning. e. This adaptation allows males to produce more offspring by saving their energy for real battles.
The short nucleotide sequence that base-pairs with any complementary sequences in DNA during PCR is a(n) ____
a. primer b. exon c. intron d. restriction enzyme e. polysome
If you were to take a cross section of a tree from the tropics, would you be able to determine the
accurate age of the tree? Why or why not? What will be an ideal response?