Tag: biology

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Questions Related to biology

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Match the following Columns I, II with III.

Column I(Common name) Column II(Roman numerical designation) Column III(Activation product)
A. Prothrombin 1. I (i) Convertin
B. Proconvertin 2. V (ii) Fibrin
C. Fibrinogen 3. II (iii) Thrombin
D. Proaccelerin 4. VII (iv) Accelerin

  1. A- 3- (iii), B- 4- (i), C- 1- (ii), D- 2- (iv)

  2. D- 4- (ii), B- 3- (iii) C- 2- (iv), A- 1- (i)

  3. C- 3- (iii), A- 4- (ii), B- 1- (iv), D- 2- (i)

  4. A- 3- (iii),C- 4- (i), D- 2- (ii), B- 1- (iv)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The following enzymes are involved in the mechanism of blood clotting in human.

Column I(Common name) Column II(Roman numerical designation) Column III(Activation product)
A. Prothrombin $3.$ II (iii) Thrombin
B. Proconvertin $4.$ VII (ii) Convertin
C. Fibrinogen $1.$ I (ii) Fibrin
D. Proaccelerin $2.$ V (iv) Accelerin
Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Fill in the blanks with suitable words given below:
The liquid part of coagulated blood is known as _________

  1. Serum

  2. Fibrinogen

  3. Hemoglobin

  4. Pulmonary

  5. Sphygmomanometer

  6. Ventricles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The liquid part of coagulated blood is known as serum. It is the liquid portion of blood clot . It includes all proteins not used in clotting of blood and all the electrolytes, hormones, antibodies, antigens etc..

Hence, the correct answer is 'Serum' .

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Choose the correct answer from the alternatives given.
Which of the following ions is involved in blood clotting?

  1. $K^+$
  2. $Na^+$
  3. $Fe^{+++}$
  4. $Ca^{++}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood coagulation is a complex biochemical process involving platelets and many proteins (enzymes).  Calcium is involved at several steps in the blood clotting, including the activation of the platelets, activation of clotting factors and enzymes which are present in the blood in inactive form. The $Ca^{++}$ ions bind with prothrombin and covert it into active form thrombin. The thrombin in turn converts fibrinogen into fibrin (a thread like protein) which traps red blood cells and helps in the formation of clot.

So, the correct option is '$Ca^{++}$'.

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Sodium oxalate prevents blood clotting due to

  1. Blocking of fibrinogen transformation

  2. Covering RBC

  3. Inhibiting activity of clotting factor of plasma

  4. Combining with calcium ions of blood
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium oxalate, like citrates, can be used to remove calcium ions (Ca${^2}$${^+}$) from blood plasma. It thus prevents blood from clotting. In the presence of calcium ions and other clotting factors, factor X activates an enzyme called prothrombin activator. This enzyme then converts the plasma protein prothrombin into thrombin. Thrombin is an enzyme that, in turn, converts fibrinogen to fibrin.

Multiple choice biology body movement joints in the human body our skeletal system and the skin joints

Joint between metacarpals and phalanges is

  1. Ball and socket

  2. Pivot

  3. Saddle

  4. Hinge
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Joints are points of contact between bones, or between bones and cartilages.
  • Synovial joints are characterized by the presence of a fluid-filled synovial cavity between the articulating surfaces of the two bones. These joints help in locomotion and many other movements. 
  • A hinge joint (ginglymus) is a joint in which the articular surfaces are molded to each other in such a manner as to permit motion only in one plane. It is a type of synovial joint. For example, joint between metacarpals and phalanges is hinge.
  • So,the correct answer is 'Hinge'.
Multiple choice biology bioenergy biofuels making biofuels technological and industrial development

Which of the following act as a by-product during biogas production of biodiesel?

  1. Ethanol

  2. Glycerin

  3. Glycerol

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biodiesel is a type of fuel produced from vegetable oils and animal fats. It is biodegradable and produces fewer air pollutants than petroleum-based diesel. Glycerin is a major byproduct in the process of biodiesel manufacturing.  This crude glycerine can be refined into a pure form and then be used in food, pharmaceutical and cosmetics industries. Thus the correct answer is option B.

Multiple choice biology bioenergy biofuels making biofuels technological and industrial development

Fossil fuel conservation can include

  1. Recycling waste

  2. Using alternative energy source

  3. Using renewable resources

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fossil fuel can be conserved by recycling waste, opting alternative sources like solar power that do not contribute to pollution. Because fossil fuel are non-renewable. So, it is important that we should protect them.

Multiple choice biology bioenergy biofuels making biofuels technological and industrial development

This is not a method of saving fuel.

  1. Using bicycle

  2. Travel in trains instead of cars

  3. Using cellphones

  4. Drawing of water from wells
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are different steps which can be taken for saving the resources which are used as fuel. Bicycles and use of public transport help to reduce the consumption of fuel like the diesel and petrol. When the water is drawn from wells, this can be performed with hands and the pulley system, without the use of the motor in which there is consumption of fuel. Using the cell phones is not one of the methods which help in saving fuel because it needs electricity to get charged and functional.

Thus, the correct answer is option C.