Tag: circulatory system - blood

Quizzes (0) Questions (46)

Questions Related to circulatory system - blood

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

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

  1. $82^oC$

  2. $109^oC$

  3. Liquid nitrogen

  4. $42^oC$
Reveal answer Fill a bubble to check yourself
D Correct answer
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. 

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

TLC of human blood is about?

  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
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice evs transportation in living organisms blood in humans circulatory system - blood basics of blood and heart

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

  1. Hemoglutination

  2. Hemolysis

  3. Haemophilia

  4. Haemopoiesis
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Blood platelets

  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.
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.

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

Red blood cells are ........... white blood cells in size.

  1. Equal to

  2. Smaller than

  3. Larger than

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
White Blood Cell (Leukocyte) are made in the bone marrow and protect the body against infection. White blood cells are bigger than red blood cells and normally are fewer in number. When a person has a bacterial infection, the number of white cells can increase dramatically.
So, the correct option is 'Smaller than'.