Exam 2 Flashcards
(20 cards)
Tails of fatty acids are metabolized (oxidized) in:
The Krebs Cycle
Glycolysis produces what compounds after one glucose molecule is catabolized?
4 molecules of ATP
2 molecules of NADH
2 molecules of water
2 molecules of pyruvic acid
Testing for the enzyme tryptophanase is accomplished by using what medium?
Tryptone Broth
You inoculate a tube of triple-sugar iron agar. After incubation, the slant is red and the deep is yellow. You can conclude that the bacterium _____.
Fermented Glucose
Which of the following could be used to sterilize plastic Petri plates in a plastic wrapper?
Gamma Radiation
The preservation of beef jerky from microbial growth relies on which method of microbial control?
Desiccation
Which of the following statements is false?
DNA replication proceeds in one direction around the bacterial chromosome.
DNA polymerase joins nucleotides in _____.
one direction ONLY
The leading strand of DNA is made _____.
continuously
Multiple _____ are possible on a bacterial chromosome.
replication forks
The _____ strand of DNA is started by an RNA primer.
lagging
When glucose is high, cAMP is _____: CAP _____ bind the lac operator and RNA polymerase _____bind the lac promoter.
low; does not; does not
When measuring the absorbance of a culture with a spectrophotometer, we are measuring the light that _____.
is lost by being absorbed by the cells, tube, and medium
Common fermentation end-products include all of the following:
Lactic acid
Propionic acid
Ethanol
Transcription is:
The synthesis of RNA from a DNA template and how genes on the chromosome are expressed
DNA replication is:
semi-conservative; half old DNA; half new DNA
Messenger RNA (mRNA) function:
make proteins
transcription and translation
Transfer RNA (tRNA) function:
protein synthesis
transcription ONLY
Ribosomal RNA (rRNA) function:
constructs parts of ribosomes
transcription ONLY
Translation is:
How nucleotides are read (3 at a time in a codon)
