Tag: biology

Questions Related to biology

______________ are used for converting saline or brackish water into pure distilled water.

basics of management of water environmental science conservation of resources food production: soil and water management biology

  1. Photo voltaic cells

  2. Solar desalination systems

  3. Solar cookers

  4. Solar water-heating

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Correct Option: B

Bring out the Incorrectly matched pair:

basics of management of water environmental science conservation of resources food production: soil and water management biology

  1. Chandertal Wetland - Himchal Pradesh

  2. Pangong Tsar - Jammu & Kashmir

  3. Pichola Lake - Rajasthan

  4. Kolleru Wetland - Karnataka

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Correct Option: D

The Water (Prevention and Control of Pollution) Act was enforced in the year____

basics of management of water environmental science conservation of resources food production: soil and water management biology

  1. 1985

  2. 1965

  3. 1974

  4. 1865

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Correct Option: C
Explanation:

The Water Act. defined water pollution and water quality standards. It prescribes penalties to the offenders.

.......... is used in seeding clouds.

basics of management of water environmental science conservation of resources food production: soil and water management biology

  1. Potassium iodide

  2. Calcium carbonate

  3. Sulphur dioxide

  4. Ammonium phosphate

Show answer
Correct Option: A
Explanation:
  • An artificial method of rain is called seeding cloud. It is a type of weather modification. 
  • This method aims at to change the amount of precipitation which falls from clouds. The method uses seeding of certain substances into the air that will serve as cloud condensation. 
  • In this, tiny particles like potassium iodide or dry ice are seeded (sprayed) in the atmosphere. 
  • The water present in the air is attracted and condenses near the sprayed particles. 
  • It further crystallises to form ice. Finally, it causes the rainfall. 
  • Thus, the correct answer is option A.

Which of the following tissue is not found in the skin of man ?

biology animal tissue muscular tissues muscle tissue muscle tissues

  1. Epithelial tissue

  2. Areolar tissue

  3. Dense fibrous connective tiisue

  4. Both $(1)$ and $(3)$

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Correct Option: A
Explanation:

Epithelial tissues line the outer surface of organs and blood vessels throughout the body, as well as the inner surface of cavities in many internal organs. The human skin has up to seven layers of ectodermal tissues and guards the underlying muscles, Bones, etc.

The skin consist of $3$ layers of tissues, the epidermis an outer most layer the contains the primary protective structure, the stratum corneum, the dermis, a Fibrous layer that supports and strengthens the epidermis; and the subcutis.

Each myoglobin binds with ________________.

biology animal tissue muscular tissues muscle tissue muscle tissues

  1. One molecule of $O _2$

  2. $4$ molecule of $O _2$

  3. Two molecules of $O _2$

  4. $3$ molecules of $O _2$

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Correct Option: A
Explanation:

Myoglobin is similar to hemoglobin in a way that both are oxygen-carrying protein but in a different location. It can bind to only one molecule of oxygen because it is a monomeric protein.

So the correct option is "One molecule of $O _2$".

Loss of water from body occurs by all of the following except

biology animal tissue muscular tissues muscle tissue muscle tissues

  1. Muscles

  2. Lungs

  3. Kinney

  4. Skin

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Correct Option: A

In transgenics, expression of transgene in target tissue is determined by ____________.

biology animal tissue muscular tissues muscle tissue muscle tissues

  1. Reporter

  2. Enhancer

  3. Transgene

  4. Promotor

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Correct Option: D

Which of the following option is not related with the other three options?

biology animal tissue muscular tissues muscle tissue muscle tissues

  1. Keratin

  2. Elastin

  3. Dextrin

  4. Collagen

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Correct Option: C
Explanation:

Keratin is a family of fibrous structural proteins. It is the protein that protects epithelial cells from damage or stress that has potential to kill the cell.

Elastin is a highly elastic protein in connective tissue and allows many tissues in the body to resume their shape after stretching or contracting.
Dextrins are a group of low-molecular-weight carbohydrates produced by the hydrolysis of starch or glycogen. 
Collagen is the main structural protein in the extracellular space in the various connective tissues in animals.
As Dextrin is a carbohydrate, whereas rest others are proteins, hence it is unrelated. Hence, option C is correct.

The muscle fatigue occurs due to accumulation of

biology animal tissue muscular tissues muscle tissue muscle tissues

  1. ${ CO } _{ 2 }$

  2. Lactic acid

  3. Creatine phosphate

  4. Myosin ATPase

Show answer
Correct Option: B
Explanation:

Aerobic respiration gives more energy but is a slow process. Anaerobic respiration like lactic acid fermentation is a fast process but releases less energy. In the case of rapid muscular contraction, the muscles perform lactic acid fermentation to provide for rapid energy intake. This process releases lactic acid which causes pain and muscle fatigue. So, the correct answer is option B.