IB Biology SL C1.2 Cell respiration Questions

oximeter/oxygen meter/probe/sensor
OR
respirometer;

Marking guidance:

$\mathrm{CO}_{2}$ /carbon dioxide / pH/acidity/acid;

Marking guidance:

a. A. limbata/Pacific species/A. aurita/Atlantic species because respiration rate increases (at higher temperature);

b. (which results in) more energy/ATP (for growth/reproduction/cell division);

a. It must refer to an increase in respiration rate, not a comparison of respiration rates in the two species.

Marking guidance:

a. (it is) active transport;

b. protein pump/carrier used

OR

$\mathrm{Na}^{+}-\mathrm{K}^{+}$/sodium-potassium pump used;

c. (3) $\mathrm{Na}^{+} /$sodium (ions) moved out and (2) $\mathrm{K}^{+} /$potassium (ions) in

OR

(3) $\mathrm{Na}^{+} /$sodium (ions) and (2) $\mathrm{K}^{+} /$potassium (ions) moved against their concentration gradients / OWTTE;

d. membrane is polarized / outside (of the axon) is positive, whereas inside is negative

OR

resting potential is -70 mV ;

Marking guidance:

a. active transport (across membranes);

b. synthesis of proteins/polysaccharides/nucleic acids/macromolecules OR

(any) condensation reactions / anabolic reactions;

c. movement of the cell/muscle contraction

OR

movement of chromosomes/cell components;

Marking guidance:

a. (ATP) is synthesized during (cell) respiration;

b. anaerobic makes less ATP than aerobic;

c. (ATP) is produced from carbon compounds/glucose;

d. glucose + oxygen produces carbon dioxide + water + ATP;

e. glucose changing to lactic acid (produces ATP);

f. (ATP) is produced in mitochondria

OR

(ATP) is produced in the cytoplasm by anaerobic respiration;

b. Accept vice versa.