Tag: blood in humans

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Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

Red blood cells are also known as

  1. Erythrocytes

  2. Leukocytes

  3. Neurocytes

  4. Oxycytes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Red blood cells-- also known as RBCs, red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes (from Greek erythros for "red" and kytos for "hollow vessel", with -cyte translated as "cell" in modern usage), are the most common type of blood cell and the vertebrate's principal means of delivering.

So, the correct option is 'Erythrocytes'.

Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

Mach List -I and List -II and select the correct option .

List - I List - II
A. Biological pigments 1 Sodium  chloride
B. Chemical messengers 2 Steroids
C. Important constituentof blood 3. Prostaglandins
D. Four carbon rings 4. Terpenes

  1. A - 2, B - 4, C -3,D -1

  2. A - 2, B -1, C - 4, D - 3

  3. A-3,B-4,C-2,D-1

  4. A-4,B-3,C-1,D-2

  5. A-3,B-4,C-1,D-2
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Biological pigments include various compounds; chemical messengers include prostaglandins; blood constituents include sodium chloride; four carbon rings are characteristic of steroids (like cholesterol). Matching A-3, B-4, C-1, D-2 is the correct association.

Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

Which of following forms net-like structure during bleeding?

  1. Platelets

  2. RBC

  3. WBC

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

Platelets are cell fragments produced from megakaryocytes (special cells in the bone marrow). They are also called as thrombocytes. An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation or blood clotting. They also change their shape from round to spiny and stick to the broken vessel wall and each other and forms net-like structure during bleeding. Hence platelets forms net-like structure during bleeding.

So, the correct answer is 'Platelets'.

Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

Statements:
A. Plasma constitutes 45% of the human blood
B. Albumin is a plasma protein which helps in osmotic balance
C. Factors responsible for the blood clotting process are
present in the blood
D. Plasma without clotting factors is called serum
E. Minerals are not generally found in blood Of the above statements.

  1. Only E is wrong and all other A to D are correct

  2. A and B are correct and C, D and E are wrong

  3. B and D are correct and A, C and E are wrong

  4. A and E are correct and B, C and D are wrong

  5. B,C and D are correct and A and E are wrong
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Statement A is incorrect because plasma is about 55% of blood. Statement E is incorrect because minerals (electrolytes) are essential components of blood plasma. Statements B, C, and D are standard physiological facts.

Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

Hemoglobin in the RBCs helps in the 

  1. Transport of oxygen

  2. Transport of nutrients

  3. Transport of carbon dioxide

  4. Both A and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hemoglobin (Hb or Hgb ) is an iron-containing protein present in erythrocytes or Red blood cells(RBC) of almost all vertebrates. Each hemoglobin is made up of 4 subunits, 2 alpha subunits and 2 beta subunits. Each subunit surrounds the central heme group that contains iron and binds to one oxygen molecule. Hence each hemoglobin molecule can bind to four oxygen molecules. It carries oxygen from lungs to tissues. It also helps in the transportation of carbon dioxide, hydrogen ions back to the lungs from the tissues. Hence haemoglobin in the RBCs helps in the transport of oxygen and carbon dioxide.

So, the correct answer is 'Both A and C'.

Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

The red colour to the red blood cells is due to the presence of 

  1. Immunoglobin

  2. Leghemoglobin

  3. Haemoglobin

  4. Hemolymph
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Hemoglobin (Hb or Hgb ) is an iron-containing protein present in erythrocytes or Red blood cells (RBC) of almost all vertebrates. Each hemoglobin is made up of 4 subunits, 2 alpha subunits and 2 beta subunits. Each subunit surrounds the central heme group that contains iron and binds to one oxygen molecule. The blood cells are red due to the interaction between iron and oxygen. Hence, the red colour of the red blood cells is due to the presence of haemoglobin.
So, the correct answer is 'Haemoglobin'.
Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

In carbon monoxide poisoning there is?

  1. Increase in carbon dioxide concentration

  2. Decrease in oxygen availability

  3. Decrease in free haemoglobin

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

Carbon monoxide binds to haemoglobin with much higher affinity than oxygen, forming carboxyhaemoglobin. This effectively reduces the amount of free haemoglobin available to transport oxygen.