8D - Unicellular And Multicellular Organisms

Question 1

Why can unicellular organisms only grow to a certain size?

Answer 1

If the organism is too big, it cannot get enough of the substances it need throughout the cell because diffusion would be too slow.

Question 2

Tissues in multicellular organisms need to have…

Answer 2

Raw materials transported to them because diffusion would be too slow

Question 3

Properties of yeast

Answer 3

Unicellular, reproduce asexually by budding, use aerobic respiration for baking and anaerobic respiration (fermentation) for alcoholic drinks

Question 4

Eqt of aerobic respiration

Answer 4

Glucose + oxygen -> carbon dioxide + water (LOTS of energy)

Question 5

Eqt of anaerobic respiration

Answer 5

Glucose -> carbon dioxide + ethanol (LITTLE energy)

Question 6

Parts of bacteria

Answer 6

Flagellum, circular chromosome, slimy layer, cell wall, cell surface membrane and cytoplasm

Question 7

What is some bacteria important for?

Answer 7

Yoghurt and cheese

Question 8

Eqt of anaerobic respiration in bacteria

Answer 8

Glucose -> lactic acid

Milk + bacteria -> lactic acid