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

Choose the right sequential phenomena among the following during the delivery of $O _2$ from blood tissue.
P : Absorption of $CO _2$ by the blood.
Q : Reaction of absorbed $CO _2$ with $H _2O$ to form $H _2CO _3$ within RBC and its conversion into $H^+$ and $HCO^{-} _{3}$ ions in the presence of carbonic anhydrase enzyme.
R : Reaction of absorbed $CO _2$ with $H _2O$ in plasma to form $H _2CO _3$ and its conversion into $H^+$ and $HCO^{-} _{3}$ ions in the presence of carbonic anhydrase enzyme.
S : Combination of $H^+$ with heme portion of $HbO _2$ to release $O _2$.
T : Combination of $HCO^{-} _{3}$ with heme portion $HbO _2$ to form reduced hemoglobin and release of $O _2$.

  1. P, Q, T

  2. P, R, S

  3. P, Q, S

  4. P, R, T
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sequence is: P (CO2 absorption), Q (formation of H+ and HCO3- in RBC via carbonic anhydrase), and S (H+ ions bind to HbO2, causing the release of O2 via the Bohr effect).

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

Choose the correct answer from the alternatives given.
What is name of the iron-containing protein that gives red blood vessels their colour?

  1. Haemoglobin

  2. Hemocyanin

  3. Pyrite

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

The presence of haemoglobin, the red pigment in the red blood cells (RBCs) makes blood appear red in colour. The haemoglobin carries oxygen and transports it to all the parts of the body.

So, the correct option is 'Haemoglobin'.

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

Correct statement regarding Mitochondria and Chloroplast
A. ATP synthesis is seen in both
B. Outer membrane has more surface in both
C. Circular naked DNA, RNA and 70 ribosomes are seen in both
D. Oxidative phosphorylation occurs in both

  1. A and B

  2. B and C

  3. A and C

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

Chloroplasts are very similar to mitochondria but are found only in the cells of plants and some algae.ATP synthesis is present in both Mitochondria and Chloroplast and the outer membrane has not more surface in both.

So, the correct option is 'A and C'.

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

Which of the following chairs of haemoglobin is affected in thalassaemia?

  1. Only $\beta$ chain

  2. Only $\alpha$ chain

  3. Both $\alpha$ and $\beta$ chain

  4. $\gamma$ chain
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Thalassaemia is a group of inherited blood disorders characterized by reduced synthesis of either the alpha or beta globin chains of haemoglobin, leading to abnormal haemoglobin production.

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

Choose the correct answer from the alternatives given.
Which of the following are components of blood?

  1. Plasma

  2. Blood cells and platelets

  3. Gases and other dissolved substances

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The composition of blood is :
1. Blood plasma- 54.3% It contains proteins, amino acids, nitrogenous wastes, nutrients, gases, electrolytes.
2. Red Blood Cells-45%
3. White Blood Cells- 0.7 %
4. Platelets
So, the correct option is 'All of the above'.