Respiration (A-level only)

Question 7

An investigator used a respirometer to measure the rate of aerobic respiration in germinating seeds. During the measuring period, the coloured liquid in the capillary tube moved $cm2.5\text{ cm}$ in $hours10\text{ hours}$ .

The diameter of the lumen (internal bore) of the capillary tubing was $mm0.6\text{ mm}$ .

The volume of a cylinder is given by $πr2l\pi r^2 l$ , where $π\pi$ is $3.14$ and $l =$ length.

Calculate the rate of gas consumption in $hour−1\text{cm}^3\text{ hour}^{-1}$ . Show your working.

[3]

Respiration (A-level only)

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Question 7

An investigator used a respirometer to measure the rate of aerobic respiration in germinating seeds. During the measuring period, the coloured liquid in the capillary tube moved $cm2.5\text{ cm}$ in $hours10\text{ hours}$ .

The diameter of the lumen (internal bore) of the capillary tubing was $mm0.6\text{ mm}$ .

The volume of a cylinder is given by $πr2l\pi r^2 l$ , where $π\pi$ is $3.14$ and $l =$ length.

Calculate the rate of gas consumption in $hour−1\text{cm}^3\text{ hour}^{-1}$ . Show your working.

[3]

Respiration (A-level only)

Question 7

Respiration (A-level only) Questions

Respiration (A-level only)

Question 7

Respiration (A-level only) Questions