#Question id: 40415
#Applied Microbiology
Which of the following errors during the Gram staining procedure would most likely cause a Gram-positive bacterium to appear Gram-negative (pink)?
#Question id: 40416
#Applied Microbiology
In a eukaryotic cell utilizing the glycerol-3-phosphate shuttle, what is the total yield of ATP via oxidative phosphorylation alone from the complete oxidation of 1 molecule of glucose? (Assume 1 NADH = 2.5 ATP and 1 FADH₂ = 1.5 ATP)
#Question id: 40417
#Applied Microbiology
Consider the following statements regarding ATP production during aerobic respiration:
Substrate-level phosphorylation occurs in both the cytoplasm and the mitochondrial matrix.
The oxidation of one molecule of Acetyl-CoA in the Citric Acid Cycle results in 11 ATPs via oxidative phosphorylation.
The enzyme ATP Synthase (Complex V) utilizes the proton motive force to generate ATP in the intermembrane space.
#Question id: 40418
#Applied Microbiology
Assertion (A) : The net gain of ATP during glycolysis is only 2 ATP, even though 4 ATP molecules are actually produced.
Reason (R): Two molecules of ATP are consumed during the preparatory phase of glycolysis to phosphorylate glucose and fructose-6-phosphate.
#Question id: 40419
#Applied Microbiology
Match the metabolic stage (Column I) with the correct ATP/Reduced Coenzyme yield per glucose molecule (Column II).
| Column I (Metabolic Stage) | Column II (Yield per Glucose) |
|---|---|
| P. Glycolysis (Net) | 1. 2 GTP + 6 NADH + 2 FADH₂ |
| Q. Pyruvate Decarboxylation | 2. 2 ATP + 2 NADH |
| R. Citric Acid Cycle | 3. 2 NADH + 2 CO₂ |
#Question id: 40420
#Applied Microbiology
A point mutation occurs in a DNA sequence, changing the codon UAC (Tyrosine) to UAA (Stop). This specific type of mutation is classified as: