An organism that can use gaseous oxygen in metabolism and has the enzymes to process toxic oxygen products is a(n) ________.
A. aerobe
B. obligate anaerobe
C. facultative anaerobe
D. microaerophile
Answer: A
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The atomic number of an element is the number of
A. protons in the orbitals. B. electrons in the nucleus. C. neutrons in the orbitals. D. protons in the nucleus. E. neutrons in the nucleus.
Can the atomic mass of an element vary?
A) No, it is fixed. If it changes at all then you have formed a different element. B) Yes. Adding or losing electrons will substantially change the atomic mass. C) Yes. Adding or losing protons will change the atomic mass without forming a different element. D) Yes. Adding or losing neutrons will change the atomic mass without forming a different element.
In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts?
A) DNA contains sulfur, whereas protein does not. B) DNA contains phosphorus, whereas protein does not. C) DNA contains nitrogen, whereas protein does not. D) DNA contains purines, whereas protein includes pyrimidines.
How do we know that transcription termination in bacteria does not solely rely on examination of the DNA template?
What will be an ideal response?