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Oil staining from cooked meat can be washed with biolgical washing powder. Which combination of enzymes should be in the washing powder to remove the stain?
- A. amylase and lipase
- B. protease and lipase
- C. amylase and pectinase
- D. protease and pectinase
- Correct Answer: Option B
Respiration involves the action of _______________________ in cells
- A. Cytoplasm
- B. Ribosomes
- C. DNA
- D. Enzymes
- Correct Answer: Option D
An oxygen debt is the build up of
- A. carbon dioxide
- B. oxygen
- C. lactic acid
- D. urea
- Correct Answer: Option C
What are the products of anaerobic respiration in muscles?
- A. ethanol and carbon dioxide
- B. ethanol only
- C. lactic acid and carbon dioxide
- D. lactic acid only
- Correct Answer: Option D
Why is yeast used in bread-making?
- A. to provide carbon dioxide
- B. to provide ethanol
- C. to provide lactic acid
- D. to provide oxygen
- Correct Answer: Option A
Glucose is required for respiration. Which other molecule is required for aerobic respiration?
- A. carbon dioxide
- B. nitrogen
- C. oxygen
- D. water
- Correct Answer: Option C
Vigorous exercise can cause an oxygen debt. Which process removes the oxygen debt?
- A. aerobic respiration of lactic acid in the liver
- B. a decrease in breathing depth
- C. a decrease in heart rate
- D. an increase in blood supply to the small intestine
- Correct Answer: Option A
What is the equation for aerobic respiration in plants?
- A. C6H12O6 6O2 → 6CO2 6H2O
- B. C6H12O6 → 2C3H6O3
- C. 6CO2 6H2O → C6H12O6 6O2
- D. C6H12O6 → 2C2H5OH 2CO2
- Correct Answer: Option A
Four freshly cut potato cylinders were soaked for one hour in different salt solutions. Which salt solution would cause the potato cylinder to be most flaccid?
- A. 0.1 mol per dm3
- B. 0.3 mol per dm3
- C. 0.7 mol per dm3
- D. 1.0 mol per dm3 s
- Correct Answer: Option D
Yeast is able to respire both aerobically and anaerobically.
- A. Aerobic respiration produces alcohol as one of its waste products.
- B. Aerobic respiration produces three times as much carbon dioxide as anaerobic respiration from one molecule of glucose.
- C. Anaerobic respiration and aerobic respiration both produce the same amount of carbon dioxide from one molecule of glucose.
- D. Anaerobic respiration produces three times as much carbon dioxide as aerobic respiration from one molecule of glucose.
- Correct Answer: Option B