Probiotics

Q.

​​​​​What is Fermentation?

please answer fast

Q.

Who discovered the fermentation process?

Q. Question 8
Write a short paragraph on the harms caused by microorganisms.

Q. What are probiotics? give examples.

Q.

State the beneficial effects (or usefulness)of micro-organisms in our lives.

Q.

An important ingredient of rava idlis and bhaturas is curd. Can you guess why?

Q.

How are microbes used to make bread?

Q.

Which of the following microorganisms is used in making curd?

1. Lactobacillus

2. Streptococcus

3. Yeast

4. None of these

Q.

When you add yeast to the dough, it rises because:

1. Yeast cells reproduce by budding

2. Budding yeast cells form chains

3. The rapid reproducing yeast cells release carbon dioxide due to respiration

4. Of the bulk of the new yeast cells

Q. Question 25
Observe the Fig.2.3 and answer the following questions


(a) Name the microorganism and the group to which it belongs.
(b) Name the food item on which the organism grows.
(c) Does it grow well in dry or in moist conditions?
(d) Is it safe to eat infected bread?

Q.

what are probiotic food?

Q.

Explain on the usefulness and harmful effects of microorganisms.

Q.

The gas released during fermentation of sugar by yeast cells is

1. carbon dioxide

2. carbon monoxide

3. hydrogen

4. oxygen

Q.

Which microbe is used to make curd from milk?

1. Bacteria

2. Virus

3. Fungi

4. Protozoan

Q.

Microorganisms are always harmful to humans.

1. True
2. False

Q.

The bread or idli dough rises because of

1. heat

2. grinding

3. growth of yeast cells

4. kneading

Q.

Give reasons for the following:

Yeast makes the dough rise.

Q. Leavened bread is produced with the help of

1. Yeast
2. Rhizopus
3. Neurospora
4. Lactobacillus

Q.

Which of the following food items are not formed by the help of microorganisms?

1. curd

2. pickle

3. bread

4. Jam

Q. Question 5
The gas released during the preparation of bread is

(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) sulphur dioxide

Q.

Define probiotics.Also state its importance.

Q.

Food stored in a refrigerator lasts longer. Why?

Q.

Assertion: Yeast can be used commercially to produce alcohol.

Reason: Yeast can perform fermentation.

1. Both assertion and reason are true and reason is the correct explanation for assertion.

2. Both assertion and reason are true and reason is not the correct explanation for assertion.

3. Assertion is true and the reason is false.

4. Assertion is false and the reason is true.

Q. What is meant by fermentation
?



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Q.

Which of the following statements are correct regarding probiotics?

i. Probiotics restore bacteria present in the intestine.

ii. Probiotics cause different diseases.

iii. Probiotics improve our immunity.

iv. Probiotics can be taken along with food.

1. i and ii

2. i, iii and iv

3. ii and iii

4. ii and iv

Q.

The microorganism present in curd is __.

Q. Which microorganism makes the bread soft and fluffy?

1. Algae
2. Bacteria
3. Protozoa
4. Yeast

Q.

Name the micro organism that you observe growing on bread, cake and sometimes on your skin.

__

Q.

Can bacteria ferment alcohol?

Q.

Probiotic is also called as __