____________ happens in the cytoplasm, whereas _____________ happens in the mitochondrion.
Aerobic respiration; anaerobic fermentation
Glycolysis; the citric acid (Krebs) cycle
The citric acid (Krebs) cycle; mitochondrial electron-transport
Anaerobic fermentation; glycolysis
The Correct Answer is B
A. Aerobic respiration; anaerobic fermentation: Aerobic respiration primarily occurs in the mitochondrion, and anaerobic fermentation occurs in the cytoplasm. Therefore, this is incorrect.
B. Glycolysis; the citric acid (Krebs) cycle: Glycolysis occurs in the cytoplasm, breaking down glucose into pyruvate. The citric acid (Krebs) cycle takes place in the mitochondrion, where it further processes pyruvate for energy production.
C. The citric acid (Krebs) cycle; mitochondrial electron-transport: Both the citric acid cycle and the mitochondrial electron transport chain occur in the mitochondrion.
D. Anaerobic fermentation; glycolysis: Glycolysis occurs in the cytoplasm and is the first step in both aerobic and anaerobic pathways, but anaerobic fermentation also occurs in the cytoplasm, so this option is not accurate in distinguishing between processes happening in different locations.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is True
Explanation
Segmentation is a type of intestinal contraction that mixes chyme with digestive enzymes and increases its contact with the mucosa, facilitating digestion and absorption. Propulsion is primarily accomplished by peristalsis, not segmentation. This statement is accurate in describing segmentation's role in the small intestine.
Correct Answer is A
Explanation
A. Na+: Sodium (Na+) is the principal cation in the extracellular fluid (ECF), which includes interstitial fluid and blood plasma.
B. Ca2+: Calcium (Ca2+) is important in various bodily functions but is not the principal cation in the ECF. Sodium is more predominant in ECF.
C. Cl-: Chloride (Cl-) is the principal anion in the ECF, not a cation. Sodium is the principal cation.
D. K+: Potassium (K+) is the principal cation in the intracellular fluid (ICF), not the ECF. Sodium is the principal cation in the ECF.
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