Useful and Harmful Microbes

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1) ---------destroys harmful microbes present in the milk.

2 points

(a) High pH

(b) Neutral pH

(d) None of these

Clear selection

2) Which organism convert lactose sugar in the milk into lactic acid

2 points

(a) Rhizobia

(b) Lactobacilli

(d) Clostridium

Clear selection

3) Yeast reproduce asexually by the ……….method

2 points

(a) Budding

(b) Spore formation

(d) Zygote formation

Clear selection

(4) A chemical compounds obtained from bacteria and fungi for destroying or preventing the growth of harmful microorganisms.

2 points

(a) Protein

(b) Enzymes

(d) Hormones

Clear selection

5) Molasses are produced from………

2 points

(a) Orange juice

(b) Mango juice

(d) sugarcane juice

Clear selection

6) which yeast is used to absorb the toxins released during the production of palm oil, heavy metals and minerals.

2 points

(a) Saccharomyces cereviceae

(b) Clostridium

(d) Rhizobium

Clear selection

(7) Anaerobic bacterium which spoil cooked food is

2 points

(a) Clostridium

(b) Lactobacilli

(d) Rhizobium

Clear selection

8) Leguminous plants can produce more proteins due to

2 points

(a) Clostridium

(b) Lactobacilli

(d) Rhizobium

Clear selection

9) Yoghurt has a sour taste due to ………

2 points

(a) Hydrochloric acid

(b) Lactic acid

(d) Acetic acid

Clear selection

10) Rhizobia in root nodules supply minerals to plants and get energy in the form of carbohydrates from plants these mutually beneficial relationship is called as

2 points

(a) Symbiosis

(b) Mutualism

(d) Commensalism

Clear selection

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