Previous year MCQs

General science UPPSC 2016 GS-I
Question

Which yeast is used for commercial production of ethanol?

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Saccharomyces cerevisiae

Detailed Solution:

The correct answer is “Saccharomyces cerevisiae”.
Saccharomyces cerevisiae is the most commonly used yeast for commercial ethanol production. It is a versatile strain capable of efficiently converting sugars into ethanol through fermentation.

Similar Questions:

Which one of the following organic acids is abundant in grapes, tamarind (इमली) and banana?
  1. A) Acetic acid
  2. B) Citric acid
  3. C) Lactic acid
  4. D) Tartaric acid
Assertion (A): A black hole is an astronomical entity that cannot be seen by telescope.
Reason (R): The gravitational field on a black hole is so strong that it does not allow even light to escape.

Select the correct answer using the codes given below:
Codes:
  1. A) Both A and R are true and R is the correct explanation of A
  2. B) Both A and R are true but R is not the correct explanation of A
  3. C) A is true but R is false
  4. D) A is false but R is true
The committee which has recommended abolition of Tax Rebates under section 88 of the Income Tax Act of India, is
  1. A) Chelliah Committee
  2. B) Kelkar Committee
  3. C) Shome Committee
  4. D) Rangarajan Committee
In which of the following districts of U.P, 112 year old woman (Nauroji Devi) has been elected Pradhan of a Village?
  1. A) Mau
  2. B) Azamgarh
  3. C) Ghazipur
  4. D) Jaunpur
Which one of the following is the bio-ethically non-controversial source of stem cells as an alternative to the highly controversial embryonic stem cells?
  1. A) Bone marrow-derived stem cells
  2. B) Amniotic fluid derived stem cells
  3. C) Blood of foetus
  4. D) Blood of babies
Why does water boil at temperature below 100°C at higher altitudes?
  1. A) The atmospheric pressure decreases and hence boiling point is lowered
  2. B) The gravitational attraction is less
  3. C) Because of heavy winds in mountains
  4. D) None of the above is correct
Given below are two statements, one is labelled as Assertion (A) and other as Reason (R) :

Assertion (A): Invert sugar is more sweeter than sucrose.
Reason (R) : Invert sugar is obtained by the hydrolysis of sucrose.

Select the correct answer from the codes given below.
Codes :
  1. A) Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. B) Both (A) and (R) are true but (R) is not the correct explanation of (A)
  3. C) (A) is true but (R) is false
  4. D) (A) is false but (R) is true
Which of the following pairs is incorrectly matched?
  1. A) Thiamine - Beriberi
  2. B) Ascorbic acid - Scurvy
  3. C) Vitamin A - Colour- blindness
  4. D) Vitamin K - Blood clotting
The globally programmed "Human Genome Project" deals with:
  1. A) establishment of a society of super-humans
  2. B) identification of races based on apartheid
  3. C) genetic improvement of human races
  4. D) identification and mapping of human genes and gene sequences
Funk invented
  1. A) Vitamins
  2. B) Hormones
  3. C) Proteins
  4. D) Enzymes
Source of Vitamin D is:
  1. A) Lemon
  2. B) Sun rays
  3. C) Orange
  4. D) Cashew nut
The planet nearest to the earth is:
  1. A) Mercury
  2. B) Venus
  3. C) Mars
  4. D) Jupiter