In the absence of ATP synthase, animal cells would not be able to ____
a. create a proton gradient
b. hydrolyze glucose to G3P
c. carry out oxidative phosphorylation
d. produce ATP
e. carry out pyruvate oxidation
ANSWER: d
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Typically ________ of ORFs in a genome cannot clearly be assigned a function. These ORFs are usually assigned and predicted to encode hypothetical proteins
A) < 1 % B) 5 % C) 30 % D) 90 %
The study of learning has been considerably advanced through studies of the California sea slug Aplysia. Which of the following is NOT a reason Aplysia is well suited to these studies?
A. It has a simple nervous system with only about 20,000 cells. B. Some of its neurons are very large, enabling the insertion of electrodes for recording. C. Some of its neurons are very large, enabling the injection of dyes that allowed tracing the paths and connections of these neurons. D. The large size of some neurons allowed isolation of proteins and mRNAs from these neurons. E. All of the choices for this question are correct.
A pathogen is a disease-causing organism, but not all pathogens are alike. Some pathogens are more dangerous than others. When describing the relative ability of a pathogen to cause disease, we are considering its ________
A) pathogenicity B) virulence C) infectivity D) emergence
During translocation, the movement of the ribosome repositions the tRNA linked to the growing polypeptide chain to
the ____ site, thereby vacating the ____ site for the arrival of a new amino-acyl tRNA. a. A; P b. P; A c. initiation; termination d. large ribosomal subunit; small ribosomal subunit e. small ribosomal subunit; large ribosomal subunit