Concept Cartoons Stofwisseling

• Biologie
• Middelbare school
• havo
• Leerjaar 5

Concept Cartoons Stofwisseling

Th 1 Stofwisseling

1. A
2. B
3. C
4. D

Waarom heb je dit antwoord gekozen?

Uitleg

Antwoord A, Plant cells, like nearly all other living cells, do cellular respiration most of the time, including all night long. Photosynthesis “shuts down” soon after sunset.

1. A
2. B
3. C
4. D

Waarom heb je dit antwoord gekozen?

Uitleg

Antwoord C: The mouse’s most urgent need is oxygen, so a small potted plant would be most important (assuming that there is also light). Mice can go without food and water longer than they can go without oxygen. Adding another mouse would be the worst choice because it would increase the competition for the available oxygen.

1. A
2. B
3. C
4. D

Waarom heb je dit antwoord gekozen?

Uitleg

Antwoord A: Decomposers such as fungi and bacteria will produce carbon dioxide as a result of cellular respiration.

1. A
2. B
3. C
4. D

Waarom heb je dit antwoord gekozen?

Uitleg

Antwoord B: Decomposers such as fungi and bacteria will produce carbon dioxide as a result of cellular respiration, so the carbon will end up in the air.

1. A
2. B
3. C
4. D

Waarom heb je dit antwoord gekozen?

Uitleg

Antwoord C: It comes from the carbon dioxide taken into the plant as a reactant for photosynthesis to synthesize carbohydrates that make up the bulk of the plant cell walls. Hydrogen (that comes from water) is also required, but the mass of the carbon and oxygen is far greater than the hydrogen in each molecule.

1. A
2. B
3. C
4. D

Waarom heb je dit antwoord gekozen?

Uitleg

Antwoord D: Plants need the carbon dioxide in air as a source of matter for photosynthesis to synthesize carbohydrates that make up the bulk of the plant cell walls. Nutrients (but not energy) such as potassium and phosphorous do come from soil. Sunlight provides energy, but not matter, and plants need water as a source of matter, not energy.

1. A
2. B
3. C
4. D

Waarom heb je dit antwoord gekozen?

Uitleg

Antwoord B: Scat, or feces, contains bacterial cells as well as fiber, and other undigested food. These components provide a food source for soil microorganisms which can then fix nitrogen (enhancing soil) and returning a variety of nutrients that were in the scat, such as potassium, magnesium, etc. back to the soil for uptake by plants.