Commercial uses of Bacteria and Fungi

Q.

The microbe which is used to control oil spills is

1. Methanobacteirum

2. Pseudomonas putida

3. Rhizobium

4. Bacillus thuringiensis

Q.

The following picture shows a bacterial lawn in an agar plate with few clear zones. The zones are formed due to a chemical present in the disk at the centre of each zone. This chemical brings about a breakdown of bacterial cells and hence the clear zones. What is this chemical called and what are the primary sources of it?

Bacterial culture plate with clear zones

1. Antibiotics, bacteria and fungi

2. Fungal chemical, fungi

3. Bacterial killer, bacteria

4. Bactericide, bacteria

Q.

What Do You Do With The Leftover Food At Home?

Q.

Which of the following is not an edible variety of mushroom?

1. Maitake

2. Oyster mushrooms

3. Morel mushrooms

4. Amanita phalloides

Q.

What are bacteriophages are used for?

Q.

What Is The Full Form DDT?

Q.

The term “antibiotic” was coined by

1. Alexander Fleming

2. Edward Jenner

3. Selman Waksman

4. Louis Pasteur

Q. Sort the following steps, which are used in cheese manufacturing.

1. Milk curdling
2. Curd processing
3. Salting
4. Ripening

Q. How does Aspergillus niger help the processed fruit juice industry?

1. It helps in preservation of the juice
2. It helps to improve the flavor of the juice
3. It gives us pectinase that dissolves pectin and gives a velvety texture to juice
4. All of the above

Q.

Edible mushrooms are a good source of vitamin B and vitamin D and minerals such as copper and potassium.

1. True
2. False

Q. Which of the following sequences depicts the steps in nitrogen cycle accurately?

1. Nitrogen fixation$\to$Assimilation$\to$Nitrification$\to$Ammonification$\to$Denitrification
2. Nitrogen fixation$\to$Nitrification$\to$Ammonification$\to$Assimilation$\to$Denitrification
3. Nitrogen fixation$\to$Nitrification$\to$Assimilation$\to$Denitrification$\to$Ammonification
4. Nitrogen fixation$\to$Nitrification$\to$Assimilation$\to$Ammonification$\to$Denitrification

Q. Mushoom cultivation can be done indoors.

1. False
2. True

Q. The preparation and flavouring of leaves of tea and tobacco is due to the activities of

1. Streptococcus lactis
2. Bacillus megatherium
3. Acetobacter
4. Bacillus radicicola

Q. Probiotics help to keep the gut healthy.

1. False
2. True

Q. Mushrooms are excellent source of vitamins and minerals.

1. False
2. True

Q. Bifidobacterium bifidum is a most common probiotic bacterial species.

1. False
2. True

Q.

Which of the following is used in the preparation of Roquefort cheese?

1. Rhizopus

2. Penicillium

3. Leuconostoc

4. Saccahromyces

Q.

Choose the correct options for edible mushrooms.

1. White button mushrooms
   

2. Paddy straw Mushrooms
   
   

3. Oyster mushrooms
   
   

4. Fly agaric
   

Q. Select the products which we obtain from fungi.

1. Bread
2. Wine
3. Antibiotics
4. Cheese
5. Cyclosporin
6. Carnauba Wax
7. Wine cork
8. Bagasse

Q. Bifidobacterium bifidum is a most common probiotic bacterial species.

1. False
2. True