RBC
Trending Questions
Name the component of blood which transports :
1) Food, carbon dioxide and nitrogenous wastes.
2) Oxygen
Study the following diagram carefully and then answer the questions that follow:
(a) Name the cell labelled 1.
(b) Identify the phenomenon occurring in A.
(c) Mention two structural differences between 1 and 2.
(d) Name the process occurring in B and C and state the importance of this process in the human body.
Mammals that contain nucleated red blood cells are:
Man
Monkey
Camel
Rabbit
What is oxyhaemoglobin and how is it formed?
Name the organelles absent in mature RBCs.
In the image below the deoxygenated blood is represented in _____ colour.
Red
Blue
Purple
White
Name the following :
(a) The cells which transport oxygen to the different parts of the human body.
(b) the cells that initiate blood clotting.
‘Aquatic animals excrete ammonia’. Which one of the following statements does not support this statement?
Ammonia is easily soluble in water
Ammonia is released from the body in gaseous state
Ammonia is highly toxic and needs to be eliminated when formed
Ammonia gets converted into less toxic form called urea and uric acid
In an adult human female, the RBC count in 1 cubic millimetre of blood is typically about
2 - 2.5 million
5 - 6 million
3.5 - 4 million
4 - 5 million
(i) Trypsin
(ii) Amylase
(iii) Pepsin
(iv) Lipase
- Red blood cells
- White blood cells
- Unstriated muscle cells
- Liver cells
Name the red pigment which carries oxygen in blood.
Differentiate the following activities on the basis of voluntary (V) or involuntary (IV) muscles.
- Jumping of frog
- Pumping of the heart
- Writing with hand
- Movement of chocolate in your intestine
Fill in the blanks.
(ii) Haemoglobin is present in
Maximum reabsorption of Na+ and K+ ions occur in ________ .
Loop of Henle
Bowman’s capsule
Distal convoluted tubule
Proximal convoluted tubule
- globin
- Pepsin
- haemoglobin
- Pectin
(i) Nitrogenous waste
One of the following does not have a nucleus. It would be:
(a) red blood cell
(b) white blood cell
(c) guard cell
(d) epidermal cell
(iii) The organs which extract the nitrogenous wastes from the blood are
Name the excretory organs of Amoeba and plants.
Which organ is considered as “Graveyard of RBC” where most of them are destroyed by macrophages?
- Red bone marrow
- Kidney
- Intestine
- Spleen
(c) What are the digestive enzymes D, E and F?
Which of the following is the respiratory pigment present in the stroma of an RBC?
Tunica media - consists of simple squamous epithelium
Tunica interna (intima) - consists of only a thin layer of connective tissue
Tunica media - consists of smooth muscle and elastic connective tissue, the amounts and proportions of each depending on vessel type
Tunica externa (adventitia) - consists of smooth muscle tissue
These are minute biconcave disc-like structures, flat in the centre and thick and rounded at the periphery. What are they?
RBCs
Hormones
WBCs
Antibodies
Lack of which of the following organelles impart flexibility to RBC to move through narrow capillaries?
Nucleus
Mitochondria
Cell membrane
Endoplasmic reticulum