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Yeast is used in wine and beer industries because it respires - Science

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प्रश्न

Yeast is used in wine and beer industries because it respires

पर्याय

  • aerobically producing oxygen

  • aerobically producing alcohol.

  • anaerobically producing alcohol.

  • anaerobically producing CO2.

MCQ

उत्तर

anaerobically producing alcohol.

Explanation:

Yeast (fungi) respires anaerobically and yields ethyl alcohol and carbon dioxide. Due to the production of ethyl alcohol, yeasts are used in the brewing industry. This process of anaerobic respiration in yeasts is called fermentation.

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पाठ 10: Respiration in Organisms - MULTIPLE CHOICE QUESTIONS [पृष्ठ ५२]

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एनसीईआरटी एक्झांप्लर Science [English] Class 7
पाठ 10 Respiration in Organisms
MULTIPLE CHOICE QUESTIONS | Q 2. | पृष्ठ ५२

संबंधित प्रश्‍न

The mountaineers carry oxygen with them because ______.


Mention any two components of blood.


State whether the following statement is true or false:

Energy can be produced in cells without oxygen.


Why do the walls of trachea not collapse when there is less air in it?


Which of the following is correct for the process of anaerobic respiration?

  Carbon dioxide always produced A lot of energy released
(a) No Yes
(b) No No
(c) Yes No
(d) Yes Yes

Which of the following statements are true about respiration?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area of the exchange of gases


The breathing and respiration in woody stem of a plant takes place through:


There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.
(a) What is (i) organ P, and (ii) waste substance Q?
(b) Name (i) artery R, and (ii) vein T.
(c) What are tiny filters S known as?
(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.


In the lungs what substance is removed from the body?


Answer this question.

What are the holes on the sides of the body of insects called?


Choose the odd one out in the following groups of four items each:

Trachea, Ciliated epithelium, Mucous, Diffusion


Name the body structure concerned with the given functional activity:

Transports oxygen to the body cells.


Name the body structure concerned with the given functional activity:

Provides actual diffusion of respiratory gases in the lungs.


State one function of the following:

Ciliated epithelium lining the respiratory tract


How is the respiratory passage kept free of dust particles?


Identify the CORRECT sequence of events for the transport of respiratory gases.


Which of the following indicates the shift of oxyhaemoglobin dissociation curve due to change in ppC02 in blood?


Glycolysis process occurs in which part of the cell?


Explain the three pathways of breakdown in living organisms.


The oxygen dissociation curve is a sigmoid curve and it shifts towards the right due to ______.


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