The newest 16 of 13 written questions. Open one to see it on the real paper.
Anaerobic and aerobic respiration occur in the human body. difference difference Describe two ways anaerobic respiration is different from aerobic respiration in the human body.
See it on the paper →Ethanol is made by fermentation. State one condition for making ethanol by fermentation.
See it on the paper →Describe the results, shown in Fig. 10.1, as the intensity of exercise increases.
See it on the paper →Identify the intensity of exercise when the percentage of energy used from aerobic respiration and the percentage of energy used from anaerobic respiration are equal. arbitrary units
See it on the paper →Describe how ethanol is made by fermentation.
See it on the paper →Use Fig. 7.1 to identify the day with the greatest rate of anaerobic respiration.
See it on the paper →Explain why the volume of carbon dioxide decreases as shown in Fig. 7.1.
See it on the paper →Table 7.1 shows some products of different types of respiration. Complete Table 7.1 by placing ticks (3) to show the correct products of each type of respiration. One has been done for you. Table 7.1 products of respiration type of respiration carbon dioxide water lactic acid aerobic in humans anaerobic in humans anaer...
Candidates should use the axes labels to describe the trends on a graph. Some candidates were not precise enough in their responses to gain credit with some not referring to the percentage of energy used. Very occasionally candidates confused aerobic respiration with anaerobic respiration.
— Examiner report, February/March 2024, 0654/42 Q10(a)(i) (Cambridge)
The correct value of 3.5 arbitrary units was routinely identified.
— Examiner report, February/March 2024, 0654/42 Q10(a)(ii) (Cambridge)
Most candidates were awarded at least one mark for including reference to yeast in their response. Few candidates mentioned that yeast needs glucose for respiration and very few stated that anaerobic conditions are required. This question was not attempted by a minority of candidates.
— Examiner report, October/November 2022, 0654/43 Q2(c)(ii) (Cambridge)
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What is the percentage of oxygen inside the balloon?
See it on the paper →Describe how ethanol is made by fermentation.
See it on the paper →What are the products of the anaerobic respiration of glucose in yeast?
See it on the paper →Name the process shown in Fig. 11.2.
See it on the paper →Name the gas given off.
See it on the paper →Anaerobic respiration is the ..................................... reactions in cells that break down nutrient molecules to release ..................................... without using ..................................... .
See it on the paper →the average number of bubbles of carbon dioxide produced per minute at 45 °C.
See it on the paper →Name the two products of anaerobic respiration in yeast.
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