Which organism appears green on TCBS agar and is halophilic?
a. V. cholerae
b. V. harveyi
c. Vibrio fluvialis
d. V. vulnificus
D
V. vulnificus is the only organism listed that is green on TCBS agar, representing its inability to ferment sucrose. All other species are yellow on TCBS agar and therefore ferment sucrose.
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DNA polymerases add new nucleotides in what direction?
A. 5' to 3' B. 3 ' to 5' C. Both directions
In humans, having dimples in the cheeks is a dominant trait. If a child has dimples but only one of her parents does, what are the genotypes of her parents? (D = dimples; d = no dimples)
A. One parent dd, other parent DD B. One parent dd, other parent Dd C. One parent Dd, other parent DD D. One parent must be DD, the other parent could be either dd or Dd E. One parent must be dd, the other parent could be either Dd or DD
Transcription produces a new ____ molecule that is ____ in sequence to the DNA template.
Fill in the blank(s) with the appropriate word(s).
The absence of necessary receptors is the basis of the defense against microbial invasion known as (natural/innate/species) resistance
What will be an ideal response?