Tag: evs

Questions Related to evs

Critical count of Platelete is _______________

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

  1. $4\times 10^4 /mm^3$

  2. $1 \ lakh /mm^3$

  3. $2 \  lakh /mm^3$

  4. $4 \  lakh /mm^3$

Show answer
Correct Option: B
Explanation:
Platelet count is the number of platelets in the blood. The normal platelet count ranges from 2- 5 lakh cells/mm$^3$. In disease conditions like dengue, the platelet count is decreased below the average value. This condition is called thrombocytopenia. If platelet count drops below 1 lakh /mm$^3$, it is considered as critical platelet count it denotes that person is at high risk of bleeding.
So, the correct answer is 'Option B'.

During heat shock to the bacterium , the temperature used for giving thermal shock is:

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

  1. $82^oC$

  2. $109^oC$

  3. Liquid nitrogen

  4. $42^oC$

Show answer
Correct Option: D
Explanation:

Heat Shock is given to bacteria for transformation that alters the membrane fluidity. The increase in temperature creates pores in the bacterial plasma membrane and allow plasmid DNA to enter the bacterial DNA. For the heat shock, the DNA-bacteria mixture is put into a 42C to 37C water bath. 

TLC of human blood is about?

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

  1. $5000 - 6000$ per ml of blood

  2. $5000 - 11000$ per ml of blood

  3. $5000 - 11000$ per cubic mm of blood

  4. $2000 - 6000$ per cubic mm of blood

Show answer
Correct Option: B
Explanation:
TLC or the total leukocyte count is calculated by a laboratory test. It calculates the number of cells present in a fixed volume of blood (or area). The standard TLC of blood in humans usually ranges from 4,000 and 11,000 cells in every microliter of blood. This value can vary from one race to another.
So, the correct answer is '5000−11000 per ml of blood'.

Choose the correct answer from the four options given.
The lifespan of RBC is?

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

  1. $100$ days

  2. $120$ days

  3. $110$ days

  4. $130$ days

Show answer
Correct Option: A

If $1$gm of Hb carries $1.34$mL of $O _2$ and $100$mL of blood has $15$gm Hb then, how much $O _2$ will be carried approximately by $100$mL of arterial blood?

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

  1. $40$mL

  2. $20$mL

  3. $50$mL

  4. $100$mL

Show answer
Correct Option: A

Iron free compound of haemoglobin is?

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

  1. Haemotoxin

  2. Bilirubin

  3. Haematin

  4. Globin

Show answer
Correct Option: A

Which of the following biomolecules is made up of that monomer which has three chemically distinct components, one is heterocyclic compound, the second is a monosaccharide and the third is a phosphate?

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

  1. Haemoglobin

  2. r-RNA

  3. Lecithin

  4. Inulin

Show answer
Correct Option: A

The process of formation of various types of blood cells is known as?

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

  1. Hemoglutination

  2. Hemolysis

  3. Haemophilia

  4. Haemopoiesis

Show answer
Correct Option: D
Explanation:

The process of making blood cells is called haemopoiesis. Blood cells are made in the bone marrow. That's a spongy tissue located inside some bones. It contains young parent cells called stem cells. These blood-forming stem cells can grow into all 3 types of blood cells – red cells, white cells, and platelets. These blood-forming stem cells make copies of themselves, and they also produce mature blood cells. When blood cells are fully mature and functional, they leave the bone marrow and enter the blood. Healthy people have enough stem cells to keep making all the blood cells they need every day.

Therefore, the correct option is D.

Which of the following has highest pH?

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

  1. Human saliva

  2. Human blood

  3. Gastric juice

  4. Urine

Show answer
Correct Option: B
Explanation:

Human Saliva -6.8
Human Blood -7.4
Gastric Juice-1.8
Urine-6

Blood platelets

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

  1. Help in the production of red blood cells in the bone marrow.

  2. Clot the blood.

  3. Are produced in liver.

  4. Fight disease-causing germs.

Show answer
Correct Option: B
Explanation:

Blood platelets or thrombocyte is another word for platelet, the blood cell that is responsible for normal blood clotting. The root "thrombo" means clot, and you will see it used with diseases and conditions that affect the platelets and blood clotting.

So, the correct option is 'Clot the blood'.