The gram-negative coccus that can be described as oxidase-positive, glucose-negative, maltose-negative, sucrose-negative, lactose-negative, and DNase-positive is:
a. N. meningitidis.
b. M. catarrhalis.
c. Neisseria cinerea.
d. N. gonorrhoeae.
B
All these characteristics can be used to describe M. catarrhalis.
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Which human populations have the highest levels of genetic variation?
A. European populations B. African populations C. Asian populations D. Melanesian populations E. North and South American populations
Legionella pneumophila may be found in
A. shower stalls. B. soil and aquatic ecosystems. C. air-conditioning systems. D. All of the choices are correct.
What life history patterns in some rotifers are adapted to living in small bodies of water?
What will be an ideal response?
Which strand is the coding strand, and where is the N-terminal end of the resulting peptide located?
Consider the following double-stranded DNA sequence that codes for a short polypeptide. 5'-A-T-G-T-G-G-C-C-A-C-T-A-T-A-A-T-C-A-3' 3'-T-A-C-A-C-C-G-G-T-G-A-T-A-T-T-A-C-T-5' A) The top strand is the coding strand, and the N-terminus is on the right. B) The top strand is the coding strand, and the N-terminus is on the left. C) The bottom strand is the coding strand, and the N-terminus is on the right. D) The bottom strand is the coding strand, and the N-terminus is on the left. E) Not enough information is given to answer the question.