_______ traits share a common ancestor, while ______ traits do not.
a. Vestigial; analogous
b. Analogous; vestigial
c. Homologous; analogous
d. Analogous; homologous
c. Homologous; analogous
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The tertiary structure of a protein is dependent on
A. the side chain composition of each amino acid within the protein. B. hydrogen bonding between the carboxyl and amino groups within the polypeptide chain. C. the interactions of multiple polypeptide chains that make up a functional protein. D. the way in which the peptide bond forms. E. the degree through which the dehydration reaction occurs.
While gazing into an aquarium, you observe bubbles coming from an aquatic plant. What are the bubbles and where are they coming from?
What will be an ideal response?
What does a mutagen cause?
A. problems with mitosis B. a reduction in the number of tRNA molecules available for protein synthesis C. decreased permeability of the nuclear envelope D. a change in the sequence of DNA E. decreased enzyme activity throughout the cell
The "BCM theory" hypothesizes that LTP is the result of presynaptic activation and (A)_________, whereas LTD is the result of presynaptic activation and (B)_______.
a. (A) weak postsynaptic activity, (B) strong postsynaptic activity b. (A) strong postsynaptic activity, (B) no postsynaptic activity c. (A) no postsynaptic activity, (B) weak postsynaptic activity d. (A) strong postsynaptic activity, (B) weak postsynaptic activity