Description : What is true about RBCs in humans? (a) They carry about 20-25 percent of CO2. (b) They transport 99.5 percent of O2. (c) They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma. (d) They do not carry CO2 at all.
Last Answer : (a) They carry about 20-25 percent of CO2.
Description : Which one of the following characteristics is common both in humans and adult frogs? (a) Four chambered heart (b) Internal fertilisation (c) Nucleated RBCs (d) Ureotelic mode of excretion
Last Answer : (c) Nucleated RBCs
Description : Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature? (1) They do not need to reproduce. (2) They are somatic cells. (3) They do not metabolise. (4) All their internal ... Only (1) (b) (1), (3) and (4) (c) (2) and (3) (d) Only (4)
Last Answer : (d) Only (4)
Description : Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature ? (a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space ... (a) (2) (a), (c) and (d) (3) (b) and (c) (4) only (d)
Last Answer : (4) only (d)
Description : Which of the following statements is true for lymph? (a) WBC + serum (b) Blood – RBCs and some proteins (c) RBCs + WBCs + plasma (d) RBCs + proteins + platelets
Last Answer : (b) Blood – RBCs and some proteins
Description : Name the major site where RBCs are formed. -Biology
Last Answer : answer:
Description : Which is known as ‘graveyard of RBCs’? -General Knowledge
Last Answer : The answer is 'Spleen'
Description : Which organ destroys worn out RBCs in the body of a vertebrate? -Do You Know?
Last Answer : The spleen is in the upper abdomen. It filters pathogens and worn out red blood cells from the blood, and then lymphocytes in the spleen destroy them.
Description : What is the main difference in human and frog RBCs?
Last Answer : What is the main difference in human and frog RBCs? A. Human RBC are non-nuclearted B. ... Human RBC have nucleus D. Human RBC are multinucleated
Description : Read the following statements (A-D) `:-` A. RBCs are the most abundant of all the cells in blood B. A healthy adult man has on an average 5 Billions t
Last Answer : Read the following statements (A-D) `:-` A. RBCs are the most abundant of all the cells in blood B. A healthy ... `:-`` A. Four B. Three C. Two D. One
Description : RBCs are nucleated in
Last Answer : RBCs are nucleated in A. Man B. Rabbit C. Rat D. Frog
Description : Immature RBCs fo mammals have
Last Answer : Immature RBCs fo mammals have A. No nucleus B. Single beaded nucleus C. Many nuclei D. Single nucleus.
Description : A healthy adult man has, on an average, _______ (in millions) of RBCs mm-3 of blood.
Last Answer : 5 – 5.5
Description : ATP is ‘wasted’ in Rapoport-Lueberring cycle in RBCs as otherwise it will inhibit (A) Phosphoglucomutase (B) Phosphohexo isomerase (C) Phosphofructo kinase (D) Phosphoenol pyruvate carboxy kinase
Last Answer : C
Description : Which one of the following is not a benefit of saliva – (1) It facilitates swallowing (2) It increases RBCs in the body (3) It keeps the mouth and teeth clean (4) It aids speech by facilitating movements of lips and tongue
Last Answer : (2) It increases RBCs in the body Explanation: Saliva does not increase the number of red blood cells in the body which is a condition of disease called Polycythemia. It results in an increased level of circulating red blood cells in the bloodstream. 674.
Description : What happens to a person who receives the wrong type of blood? (1) All the arteries constrict (2) All the arteries dialates (3) The RBCs agglutinate (4) The spleen and lymphnodes deteriorate
Last Answer : (3) The RBCs agglutinate Explanation: Red blood cell agglutination indicates clumping of RBC's due to cold agglutinins which are most commonly IgM antibodies. These antibodies cross-link red ... tination is when the particles involved are red blood cells. The agglutin is called hemagglutinin..
Description : The virus of AIDS affects the growth of (1) Haemoglobin (2) RBCs in blood (3) T cells in blood (4) Grey cells in brain
Last Answer : (3) T cells in blood Explanation: Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of ... role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
Description : Increased RBC's in the blood leads to a condition called - (1) Anemia (2) Haemophilia (3) Polycythemia (4) Leukaemia
Last Answer : (3) Polycythemia Explanation: Polycythemia is an abnormally high concentration of hemoglobin in the blood through an increase in red cell numbers. People with this condition have thicker blood, which ... in the circulation by increasing or decreasing the rate of production by the bone marrow.
Description : Which of the following is known as 'grave yard' of RBCs? (1) Liver (2) Bone marrow (3) Spleen (4) Appendix
Last Answer : (3) Spleen Explanation: The old, worn out and dead RBC are destroyed mainly in an organ called spleen. Hence, it is commonly called the 'graveyard of RBC'.
Description : RBCs do not perform aerobic respiration because these do not contain - (1) Mitochondria (2) Nucleus (3) Endoplasmic Reticulum (4) Lysosomes
Last Answer : (1) Mitochondria Explanation: Red Blood Corpusles (RBCs) do not contain Mitochondria.
Description : The number of RBCs varies from
Last Answer : 4.5 to 5.5 million cells/cubic mm of blood.
Description : What happens to a person who receives the wrong type of blood? A. All the arteries constrict B. All the arteries dialates C. The RBCs agglutinate (Answer) D. The spleen and lymphnodes deteriorate
Last Answer : C. The RBCs agglutinate (Answer)
Description : The Virus of AIDS affects the growth of-------? A. Hemoglobin B. RBCs in blood C. T cells in blood (Answer) D. Grey Cells in blood
Last Answer : C. T cells in blood (Answer)
Description : Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines ... commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.
Last Answer : (a) estimating the amount of organic matter in sewage water
Description : Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines (c) ... a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.
Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.
Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
Description : People who have migrated from the planes to an area adjoining Rohtang Pass about six months back (a) have more RBCs and their haemoglobin has a lower binding affinity to O2 (b) are not physically fit ... etc. (d) have the usual RBC count but their haemoglobin has very high binding affinity to O2
Last Answer : (a) have more RBCs and their haemoglobin has a lower binding affinity to O2
Description : A person suffering from a disease caused by Plasmodium, experiences recurring chill and fever at the time when (a) the sporozoites released from RBCs are being rapidly killed and broken down ... to enter fresh RBCs (d) the microgametocytes and megagametocytes are being destroyed by the WBCs
Last Answer : (c) the parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs
Description : Motile zygote of Plasmodium occurs in (a) gut of female Anopheles (b) salivary glands of Anopheles (c) human RBCs (d) human liver
Last Answer : (a) gut of female Anopheles
Description : What percent solution of NaCl is considered isotonic to mammalian RBCs. a. 0.8% b. 0.85% c. 0.90% d. 0.95%
Last Answer : 0.85%
Description : . Sickle-cell anaemia is (a) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin (b) caused by a change in a single base pair of DNA (c) characterized by elongated sickle like RBCs with a nucleus (d) an autosomal linked dominant trait.
Last Answer : (b) caused by a change in a single base pair of DNA
Description : The lymph serves to (a) return the interstitial fluid to the blood (b) return the WBCs and RBCs to the lymph nodes (c) transport CO2 to the lungs (d) transport O2 to the brain
Last Answer : (a) return the interstitial fluid to the blood
Description : Which of the following is not the main function of lymph glands? (a) Forming RBCs (b) Destroying bacteria (c) Forming WBCs (d) Forming antibodies
Last Answer : a) Forming RBCs
Description : Compared to blood our lymph has (a) plasma without proteins (b) more WBCs and no RBCs (c) more RBCs and less WBCs (d) no plasma
Last Answer : b) more WBCs and no RBCs
Description : RBCs do not occur in (a) frog (b) cow (c) camel (d) cockroach.
Last Answer : (d) cockroach.
Description : Carbonic anhydrase occurs in (a) lymphocytes (b) blood plasma (c) RBCs (d) leucocytes.
Last Answer : (c) RBCs
Description : Cells formed in bone marrow include (a) RBCs (b) RBCs and leucocytes (c) leucocytes (d) lymphocytes
Last Answer : b) RBCs and leucocytes
Description : The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because O in it refers to having (a) overdominance of this type on the genes for A and B types (b) one antibody ... on the RBCs (c) no antigens A and B on RBCs (d) other antigens besides A and B on RBCs
Last Answer : (c) no antigens A and B on RBCs
Description : There is no DNA in (a) mature RBCs (b) a mature spermatozoan (c) hair root (d) an enucleated ovum
Last Answer : (a) mature RBCs
Description : Which one of the following human organs is often called the “graveyard” of RBCs? (a) Gall bladder (b) Kidney (c) Spleen (d) Liver
Last Answer : c) Globulin
Description : At high altitude, the RBCs in the human blood will (a) increase in number (b) decrease in number (c) increase in size (d) decrease in size.
Last Answer : (a) increase in number
Description : How the transport of O2 and CO2 by blood happens? (a) With the help of WBCs and blood serum (b) With the help of platelets and corpuscles (c) With the help of RBCs and blood plasma (d) With the help of RBCs and WBCs
Last Answer : (c) With the help of RBCs and blood plasma
Description : Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as (a) bicarbonate in blood plasma and RBCs (b) free CO2 in blood plasma (c) 70% carbamino-haemoglobin and 30% as bicarbonate (d) carbamino-haemoglobin in RBCs.
Last Answer : (a) bicarbonate in blood plasma and RBCs
Description : Babesiosis is carried by.___ and infects___________ a. Mosquitoes; Rbcs b. Fleas; The Kidneys c. Ticks; Rbcs d. Mosquitoes; The Liver
Last Answer : c. Ticks; Rbcs
Description : Weil-Felix reaction is based on sharing of antigens between A.sheep RBCs and EB virus B.mycoplasma and human O group RBCs C.rickettsial antigens and antigens of certain strains of Proteus D.none of these
Last Answer : C.rickettsial antigens and antigens of certain strains of Proteus
Description : 96. Motile zygote of Plasmodium occurs in (1) Human liver (2) Gut of female Anopheles (3) Salivary glands of Anopheles (4) Human RBCs
Last Answer : Gut of female Anopheles
Description : 76. People who have migrated from the planes to an area adjoining Rohtang Pass about six months back (1) Have the usual RBC count but their haemoglobin has very high binding affinuty of O2 (2 ... to play games like football (4) Suffer from altitude sickness with symptoms like nausea, fatigue, etc
Last Answer : Have more RBCs and their haemoglobin has a lower binding affinity of O2
Description : The class of compounds implicated in the Antarctic ozone destruction is: w) RBC's x) DDT's y) CFC's z) PCB's
Last Answer : ANSWER: Y -- CFC'S
Description : Increased RBC’s in the blood leads to a condition called (1) Anemia (2) Haemophilia (3) Polycythemia (4) Leukaemia
Last Answer : Polycythemia