Question

1. During cellular respiration, where is NADH produced?

a) nucleus

b) cytosol and mitochondrial matrix

c) cytosol

d) mitochondrial intermembrane space

e) endoplasmic reticulum

2. The condensation of what two compounds in the citric acid cycle results in citrate?

a) Pyruvate and Oxaloacetate

b) Oxaloacetate and Acetyl (from Acetyl-CoA)

c) Oxaloacetate and a phosphate

d) Acetyl (from Acetyl-CoA) and CO2

e) None of the above

3. At the end of glycolysis which products are produced?

a) 1 PYRUVATE, 4 ATP, 2 NAD+
b) 2 PYRUVATE, 4 ATP, 2 NAD+
c) 2 PYRUVATE, 2 ATP, 2NADH
d) 2 PYRUVATE, 4 ATP, 2 NADH
e) NONE OF THE ABOVE

Answer 1

1. Following glycolysis, the mechanism of cellular respiration then involves another multistep process called the Krebs cycle, also called the citric acid cycle and the tricarboxylic acid cycle. The Krebs cycle uses the two molecules of pyruvic acid formed in glycolysis and yields high-energy molecules of NADH and FADH and some ATP and carbon dioxide. The Krebs cycle occurs at the cell membrane of bacterial cells and in the mitochondria of eukaryotic cells.  Each of these sausage-shaped organelles of eukaryotic microorganisms possesses inner and outer membranes.

Answer: mitochondrial intermembrane space