Microbial Enzymes and Organic Acids

Q.

Question 14
Wheat dough if left in the open, after a few days, starts to emit a foul smell and becomes unfit for use. Give reason.

Q. Salts which can be used as supplements for iron are obtained from ___.

1. lactic acid
2. itaconic acid
3. citric acid
4. gluconic acid

Q. Which of the following microorganisms is used in the production of citric acid in industries?

1. Lactobacillus bulgaris
2. Penicillium citrinum
3. Rhizopus nigricans
4. Asperilligus niger

Q.

Xanthan gum is obtained by fermentation of Starch and ___

Q.

Citric Acid is obtained from_______

Q.

1. Nycin	a. Artificial sweetner
2. Malic acid	b. Protein binder
3. Lysine	c. Microbial restrictor
4. Xylitol	d. Imparts acidity

Pick the right matches and tick the correct option from below.

1. 1-c, 2-d, 3-b, 4-a
2. 1-c, 2-a, 3-d, 4-b
3. 1-a, 2-d, 3-b, 4-c
4. 1-d, 2-b, 3-c, 4-a

Q. 'X' ferments molasses and starch to produce gum, which imparts thickness to the ice-cream. Identify 'X'.

1. Brevibacterium
2. Lactobacillus delbrueckii
3. Xanthomonas
4. Aspergillus niger

Q. Name the acid produced by Aspergillus itaconius.

1. Itaconic acid
2. Citric acid
3. Lactic acid
4. L-glutamic acid

Q. Acetic acid is bleached with the help of ___.

1. cyanide
2. sodium hydroxide
3. potassium hydroxide
4. potassium ferrocynide

Q. ____ acid is used in the production of vitamins.

1. Lactic
2. Gluconic
3. Carbonic
4. Citric

Q. A plant capable of reducing toxic cyanide waste into non toxic form is

1. Pseudomonas
2. Jatropha curcas
3. Gibberella fusarium
4. Mirabilis Jalaplia

Q. Answer the following (Any Three)

1. Write advantages of Hereditary
2. Which molecules are formed after whole oxidation of Acetyl co-enzyme A?
3. Distinguish between self-pollination & cross-pollination. (two point )
4. Describe any two animals of endangered species.
5. Complete the following conceptual picture:

Q. ____ acid is used in the production of juices and toffee.

1. Gluconic
2. Lactic
3. Carbonic
4. Citric

Q. Name the process in which sugar is converted into alcohol?

1. Fermentation
2. Respiration
3. Bubbling
4. Dissection