Aristotle believed that
A) species evolve through natural selection and other mechanisms.
B) an individual's use of a body part causes it to further evolve.
C) species are fixed (permanent) and perfect.
D) the best evidence for change within species is seen in fossils.
Answer: C
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If you were reading off the sequence of amino acids in the figure to a biologist friend, what should the first three letters be?
A) M-N-G B) A-P-A C) It does not matter, since the protein has no polarity or directionality.
In both prokaryotes and eukaryotes the start codon (or initiator codon) is ____, which codes for the
amino acid ____.
a. UGA; proline b. UUU; phenylalanine c. AAA; lysine d. ACG; threonine e. AUG; methionine
Some genes encoding proteins that are
essential to the survival of the organism are called highly conserved sequences. Which of the following is an example of one of these proteins? a. cytochrome b b. muscle structural proteins c. carbohydrate hydrolyzing genes d. skin pigmentation e. keratin
You spot your friend Enrique and yell to get his attention, but he can't hear you. As you get closer to him, you clearly hear loud music coming from his headphones. What should you warn him about?
What will be an ideal response?