A characteristic of all modern, living cells is ____
a. a semi-permeable membrane keeping the internal environment of the cell separate from the external
environment
b. nucleic acids linked in a sequence to form multiple large macromolecule chains
c. a requirement for the nucleic acids to be contained behind a nuclear membrane
d. a mechanism of converting energy from the sun
e. a method of converting protein changes into nucleic acids
ANSWER: a
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Which of the following is necessary to move substances against an electrochemical gradient?
a. Energy from ATP b. Highly dense solvents c. Isotonic solutions d. Particles from vacuoles
Leptospirosis
A. is communicable. B. is contracted by the fecal-oral route. C. is strictly transmitted by sexual contact. D. has only humans as a reservoir. E. can be contracted from the environment.
Pyruvate must move from the cytosol into the mitochondria, where it is oxidized to form CO2 and acetyl CoA by the pyruvate dehydrogenase complex
How many different enzymes and what total number of polypeptides, respectively, are required to perform this oxidation process in the mitochondrion? (a) 1; 60 (b) 3; 3 (c) 3; 26 (d) 3; 60
Which gram positive bacilli matches with number 2's image/description?
A) Clostridium B) Corynebacterium C) Listeria D) Mycobacterium E) Bacillus F) Propionibacterium