Tag: constituents of air

Questions Related to constituents of air

State whether the following statements are true or false.
Fermentation is the process that causes your muscles to be sore after a long, strenuous workout.

biology interdependence of organism and the environment natural cycles and resources constituents of air medicinal use of microorganism

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

In a strenuous workout, the oxygen supply to the body tissues is not received completely. To produce the necessary energy in the absence of oxygen, the pyruvate molecule at the end of glycolysis is utilised in fermentation to produce lactic acid.

The presence of lactic acid in the muscles leads to cramps and muscles to sore.
So, the correct option is 'True'.

Identify correct pairs from the following.

(P) Rhizobium$\longrightarrow$ Nitrogen fixation
(Q) Clostridium$\longrightarrow$ Bakery products
(R) Penicillium$\longrightarrow$ Production of antibiotics
(S) Yeast $\longrightarrow$Food poisoning

biology interdependence of organism and the environment natural cycles and resources constituents of air medicinal use of microorganism

  1. P and Q

  2. R and P

  3. S and R

  4. Q and S

Show answer
Correct Option: B
Explanation:

  • Rhizobium is a nitrogen fixation bacteria found in soil.
  • Penicillium is an antibiotic used for making medicines and antibiotics.

So, the correct option is 'R and P'.

Which of the following statement are correct?
A. Pyruvate can be converted into ethanol and carbon dioxide by yeast. 
B. Fermentation takes place in aerobic bacteria.
C. Fermentation takes place in mitochondria
D. Fermentation is a kind of anaerobic respiration.

biology interdependence of organism and the environment natural cycles and resources constituents of air medicinal use of microorganism

  1. D only

  2. Both B and C

  3. Both A and D

  4. Both C and D

Show answer
Correct Option: C
Explanation:

Pyruvate is the output of glycolysis where one molecule of glucose breaks down into two molecules of pyruvate. Anaerobically, pyruvic acid is broken down to form lactate in animals and ethanol  in plants and microorganisms. In alcoholic fermentation, pyruvate from glycolysis is converted to acetaldehyde and then ethanol and carbon dioxide. Ethanol fermentation which is a biological process of converting sugars to cellular energy is performed by yeasts in the absence of oxygen. hence this is considered as a anaerobic process. 

So, the correct answer is option C.

Natural fixation of nitrogen takes place through a non-biological process called ___________.

biology air and atmosphere natural cycles and resources constituents of air medicinal use of microorganism component of air - nitrogen

  1. artificial fixation

  2. nitrogen fixation by lightening

  3. industrial fixation

  4. synthetic fixation

Show answer
Correct Option: B
Explanation:

In non biological fixation of nitrogen when the plant dies the fixed nitrogen is released making it available to other plants and this helps to fertilize the soil. The great majority of legumes have this association but a few genera do not. In farming practices fields are rotated through various crops like clover and buckwheat which are known as green manure.

The fixation of nitrogen can also be brought artificially.
biology air and atmosphere natural cycles and resources constituents of air medicinal use of microorganism component of air - nitrogen

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

By the use of Haber process, fixation of nitrogen can be done artifically.

Which of the following breed yield good quality wool?

biology air and atmosphere natural cycles and resources constituents of air medicinal use of microorganism component of air - nitrogen

  1. Nali

  2. Marwari

  3. Patan wadi

  4. Lohi

Show answer
Correct Option: D
Explanation:
  1. The Lohi breed yield 100 % quality wool.
  2. The Lohi is found in southern Punjab in Pakistan. They are known for their good quality wool and meat production. The body of the breed is white and the head is usually tan, black or brown in color.  
Their home tract is Rajasthan, and mainly distributed in the Churu, Ganganagar and Jhunjhunu districts of Rajasthan.

Which of the following fertilizers does not replenish nitrogen in the soil?

biology air and atmosphere natural cycles and resources constituents of air medicinal use of microorganism component of air - nitrogen

  1. CAN

  2. Urea

  3. Superphosphate lime

  4. Ammonium phosphate

Show answer
Correct Option: C
Explanation:

Phosphate rock is too insoluble for direct use, and is commonly treated with sulfuric acid to make a mixture of calcium sulfate and the more soluble calcium hydrogen phosphate, called superphosphate.The use of superphosphate usually supplies adequate calcium. 

Nitrogen fixation means:

biology air and atmosphere natural cycles and resources constituents of air medicinal use of microorganism component of air - nitrogen

  1. manufacture of nitrogen

  2. liquefication of nitrogen

  3. conversion of nitrogen into nitric acid

  4. conversion of atmospheric nitrogen into useful compounds

  5. mixing of nitrogen with other elements

Show answer
Correct Option: D
Explanation:

Nitrogen fixation is a process in which nitrogen(N2) in the atmosphere is converted into ammonia (NH3) and useful compounds. Atmospheric nitrogen or molecular dinitrogen (N2) is relatively inert: it does not easily react with other chemicals to form new compounds.

So the answer is D.

Balance of oxygen and carbon dioxide in atmosphere is maintained by :

chemistry water and air and their importance natural cycles and resources constituents of air component of air - nitrogen

  1. plants

  2. animals

  3. humans

  4. All of the above

Show answer
Correct Option: D
Explanation:
The balance of oxygen and carbon dioxide is maintained in the atmosphere by the oxygen released by plants during photosynthesis and carbon dioxide released by human and animals.

Hence the option D is correct.

Isotope of oxygen is used to detect the reaction mechanism of:

chemistry water and air and their importance natural cycles and resources constituents of air component of air - nitrogen

  1. formation of esters

  2. formation of amines

  3. formation of alkanes

  4. formation of alkenes

Show answer
Correct Option: A
Explanation:

Isotope of oxygen is used to detect the reaction mechanism of formation of esters.