8D Quiz on Microbes

Which of these is a 'life process' carried out by all organism?

• photosynthesis

• breathing

• fermentation

• respiration

Two kingdoms that contain many unicellular micro-organisms are:

• prokaryotes and protoctists

• animals and plants

• yeast and fungi

• viruses and bacteria

Unicellular organisms get materials in and out of their cells by:

• diffusion

• diffraction

• dispersion

• not at all

All prokaryotes ...

• have chloroplasts

• don't have a nucleus

• don't respirate

• don't have cytoplasm

Which of these is a food often made using yeast?

• Potato chips

• cheese

• bread

• yoghurt

Yeast turning glucose to carbon dioxide and ethanol without oxygen is known as ...

• anaerobic respiration

• aerobic respiration

• fermentation

• combustion

Yeast make more yeast through the process of ...

• binary fission

• binary fusion

• fermentation

• budding

The graph shows the growth of a population of yeast. At P the graph becomes level. What might the reason for that be?

• the yeast cells can only grow to a certain size

• the food for the yeast has started to run out

• there is not enough light for the yeast to grow

• the carbon dioxide for the yeast has run out

Three resources necessary for bacteria to grow are...

• warmth, food, moister

• light, carbon dioxide, glucose

• oxygen, nitrogen, mold

• darkness, moisture, nitrogen

• pseudopod

• chromosome

• cilium

• flagellum