Home
Class 12
BIOLOGY
Yeast poison themselves to death when th...

Yeast poison themselves to death when the concentration of _____ reaches about 13%.

A

Lactate

B

Butyrate

C

Alcohol

D

Pyruvate

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Yeast Respiration:** - Yeast is a type of fungus that can perform both aerobic and anaerobic respiration. - During anaerobic respiration, yeast converts glucose into pyruvate through glycolysis. 2. **Anaerobic Process:** - In the absence of oxygen, the pyruvate produced from glycolysis is further converted into acetaldehyde and then into ethanol (C2H5OH) through a process known as alcoholic fermentation. 3. **Ethanol Production:** - The primary product of anaerobic respiration in yeast is ethanol. This process allows yeast to generate energy in the absence of oxygen. 4. **Toxicity of Ethanol:** - As yeast continues to produce ethanol, the concentration of ethanol increases. - When the concentration of ethanol reaches about 13%, it becomes toxic to the yeast cells, leading to their death. 5. **Conclusion:** - Therefore, the correct answer to the question is that yeast poison themselves to death when the concentration of **alcohol** (ethanol) reaches about 13%. **Final Answer: Alcohol (ethanol)** ---
Promotional Banner

Topper's Solved these Questions

  • RESPIRATION IN PLANTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section A)|50 Videos

  • RESPIRATION IN PLANTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section B)|35 Videos

  • RESPIRATION IN PLANTS

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|12 Videos

  • REPRODUCTIVE HEALTH

    AAKASH INSTITUTE ENGLISH|Exercise Sectoin -D Assertion - Reason Type Questions|22 Videos

  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION D)|20 Videos

Similar Questions

Explore conceptually related problems

Read the given statements and choose the correct option: A. Yeasts poison themselves to death when the concentration of alcohol reaches about 10%. B. During glucose activation phase of glycolysis, 2 ATP are consumed,

Decompsition of H_(2)O_(2) follows a frist order reactions. In 50 min the concentrations of H_(2)O_(2) decreases from 0.5 to 0.125 M in one such decomposition . When the concentration of H_(2)O_(2) reaches 0.05 M, the rate of fromation of O_(2) will be

Decompsition of H_(2)O_(2) follows a frist order reactions. In 50 min the concentrations of H_(2)O_(2) decreases from 0.5 to 0.125 M in one such decomposition . When the concentration of H_(2)O_(2) reaches 0.05 M, the rate of fromation of O_(2) will be

A gas ‘G’ combines with haemoglobin to form carboxyhaemoglobin. In blood, when the concentration of carboxyhaemoglobin reaches about percent, the oxygen carrying capacity of blood is greatly reduced. ‘G’ is :

Read the following paragraph and answer the questions given below , Stable equilibrium is of various types . Mechanical equilibrium is achieved when all particles are at rest and total potential energy of the system is minimum . At any stage where particles are at rest but the system is not at stable equilibrium as it can reduce its potential energy by reverting to another position, is called metastable equilibrium . Thermal equilibrium is result from the absence of temperature gradients in the system. Chemical equilibrium is obtained when no further reaction occurs between reacting substances, i.e forward and reverse rates of reaction are equal. when steam with solid iron at high temperature Fe_3O_4(s) and hydrogen gas are produced . But the reaction never goes to completion. this is because as the products are formed the reaction proceeds in reverse direction and when rate of reverse reaction is equal to rate of forward reaction , the concentration of reactants and products become constant and equilibrium is reached. When a matchbox is balanced on its edge, it is unstable and will tumble to a more stable position resting on its face so as to acquire minimum potential energy. This is an example of

State true or false : A state of equilibrium is reached when: the concentration of the products and reactants have reached constant value

Read the following paragraph and answer the questions given below , Stable equilibrium is of various types . Mechanical equilibrium is achieved when all particles are at rest and total potential energy of the system is minimum . At any stage where particles are at rest but the system is not at stable equilibrium as it can reduce its potential energy by reverting to another position, is called metastable equilibrium . Thermal equilibrium is result from the absence of temperature gradients in the system. Chemical equilibrium is obtained when no further reaction occurs between reacting substances, i.e forward and reverse rates of reaction are equal. When steam with solid iron at high temperature Fe_3O_4(s) and hydrogen gas are produced . But the reaction never goes to completion. This is because as the products are formed the reaction proceeds in reverse direction and when rate of reverse reaction is equal to rate of forward reaction , the concentration of reactants and products become constant and equilibrium is reached. The primary objective of the passage is

Read the following paragraph and answer the questions given below , Stable equilibrium is of various types . Mechanical equilibrium is achieved when all particles are at rest and total potential energy of the system is minimum . At any stage where particles are at rest but the system is not at stable equilibrium as it can reduce its potential energy by reverting to another position, is called metastable equilibrium . Thermal equilibrium is result from the absence of temperature gradients in the system. Chemical equilibrium is obtained when no further reaction occurs between reacting substances, i.e forward and reverse rates of reaction are equal. When steam with solid iron at high temperature Fe_3O_4(s) and hydrogen gas are produced . But the reaction never goes to completion. This is because as the products are formed the reaction proceeds in reverse direction and when rate of reverse reaction is equal to rate of forward reaction , the concentration of reactants and products become constant and equilibrium is reached. When two reactants (A) and (B) are mixed to give products (C) and (D) the concentration quotient (Q) at initial stage of the reaction

Consider reaction in which reactant R is converted into product P : RtoP . When the initial concentration of R^(') is 0.5M The half life of the reaction is 20 minute. When the initial concentration is increased to 1.3 M, the half life decreases to 7.69 minute. Q. What is the rate canstant of the reaction?

Equimolar concentrations of H_(2) and I_(2) are heated to equilibrium in a 2 L flask. At equilibrium, the forward and backward rate constants are found to be equal. What percentage of initial concentration of H_(2) has reached at equilibrium ?

AAKASH INSTITUTE ENGLISH-RESPIRATION IN PLANTS -Exercise
  1. The term protoplasmic respiration is used for the respiration of

    Text Solution

    |

  2. The energy currency of the cell.

    Text Solution

    |

  3. What is the site of glycolysis ?

    Text Solution

    |

  4. In EMP, hexose sugar splits into two molecules of triose sugar by the ...

    Text Solution

    |

  5. Enzyme required to catalyse the last step of glycolysis is

    Text Solution

    |

  6. Fermentation was first discovered by

    Text Solution

    |

  7. Yeast poison themselves to death when the concentration of reaches ab...

    Text Solution

    |

  8. Pyruvate to lactic acid conversion by the action of lactic acid bacter...

    Text Solution

    |

  9. In muscles during exercise, when oxygen is inadequate for cellular res...

    Text Solution

    |

  10. Net gain of ATP molecules of each molecule of glucose in fermentation ...

    Text Solution

    |

  11. Which of the following is high energy molecule produced by oxidative d...

    Text Solution

    |

  12. First oxidative decarboxylation in aerobic respiration occurs during t...

    Text Solution

    |

  13. Continuous supply of which organic acid is required to run Krebs cycle...

    Text Solution

    |

  14. How many TCA cyles are required during the complete oxidation of one s...

    Text Solution

    |

  15. Which of the following enzyme of Krebs cycle is found attached to inne...

    Text Solution

    |

  16. NADH is oxidised to NAD^(+) in

    Text Solution

    |

  17. F(0) part of ATP synthase (Complex-V) is

    Text Solution

    |

  18. alpha-ketogultaric acid is raw material for the synthesis of :

    Text Solution

    |

  19. The ratio of the volume of CO(2) evolved to the volume of O(2) consume...

    Text Solution

    |

  20. Select the correct statement w.r.t RQ.

    Text Solution

    |