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.

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.
by

1 Answer

Answer :

(a) They carry about 20-25 percent of CO2.
by

Related questions

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

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

A sample of natural gas containing 80% methane (CH4 ) and rest nitrogen (N2 ) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is (A) CO2 : 6.26, CO : 1.56, O2 : 3.91, H2O :15.66, N2 : 72.60 (B) CO2 : 7.42, CO : 1.86, O2 : 4.64, N2 :86.02 (C) CO2 : 6.39, CO : 1.60, O2 : 3.99, H2O:25.96, N2 :72.06 (D) CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74

Description : A sample of natural gas containing 80% methane (CH4 ) and rest nitrogen (N2 ) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is (A) CO2 : 6 ... 96, N2 :72.06 (D) CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74

Last Answer : (B) CO2 : 7.42, CO : 1.86, O2 : 4.64, N2 :86.02

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

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

Can humans survive breathing an 80/20 mix of CO2 and O2?

Description : Can humans survive breathing an 80/20 mix of CO2 and O2?

Last Answer : Humans breath Air which is a mixture of about 78% Nitrogen, 21% Oxygen and trace other gases including 0.03% Carbon Dioxide. Much higher levels of Oxygen would make it easy for things to catch ... can tolerate a higher level because they use the Carbon Dioxide. and water to make sugars and cells.

The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. (a) C : Arterial capillary - Passes oxygen to tissues (b) A : Alveolar cavity - Main site of exchange of respiratory gases (c) D : Capillary wall - Exchange of O2 and CO2 takes place here (d) B : Red blood cells - Transport of CO2 mainly

Description : The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. ... Exchange of O2 and CO2 takes place here (d) B : Red blood cells - Transport of CO2 mainly

Last Answer : (b) A : Alveolar cavity - Main site of exchange of respiratory gases

The carbon dioxide is transported via blood to lungs mostly (a) in combination with haemoglobin only (b) dissolved in blood plasma (c) in the form of bicarbonate ions (d) as carbamino-haemoglobin and as carbonic acid.

Description : The carbon dioxide is transported via blood to lungs mostly (a) in combination with haemoglobin only (b) dissolved in blood plasma (c) in the form of bicarbonate ions (d) as carbamino-haemoglobin and as carbonic acid.

Last Answer : (c) in the form of bicarbonate ions

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 (a) people eat more nutritive food, therefore more RBCs are formed (b) people get pollution-free air to breath and more oxygen is available (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.

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

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.

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

Identify the wrong statement with reference to transport of oxygen. (a) Binding of oxygen with haemoglobin is mainly related to partial pressure of O2. (b) Partial pressure of CO2 can interfere with O2 binding with haemoglobin. (c) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin. (d) Low pCO2 in alveoli favours the formation of oxyhaemoglobin.

Description : Identify the wrong statement with reference to transport of oxygen. (a) Binding of oxygen with haemoglobin is mainly related to partial pressure of O2. (b) Partial pressure of CO2 can interfere ... the formation of oxyhaemoglobin. (d) Low pCO2 in alveoli favours the formation of oxyhaemoglobin.

Last Answer : (c) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin.

Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs (a) as bicarbonate ions (b) in the form of dissolved gas molecules (c) by binding to RBC (d) as carbamino - haemoglobin.

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Last Answer : (a) as bicarbonate ions

Corrosiveness of steam condensate is due to the presence of (A) CO2 (B) Dissolved O2 (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Corrosiveness of steam condensate is due to the presence of (A) CO2 (B) Dissolved O2 (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

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 space is available for oxygen transport. (a) Only (1) (b) (1), (3) and (4) (c) (2) and (3) (d) Only (4)

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)

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 is available for oxygen transport (1) only (a) (2) (a), (c) and (d) (3) (b) and (c) (4) only (d)

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Last Answer : (4) only (d)

There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport? a. The site of energy conversion and transport in the plasma membrane involves the phospholipid component b. The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP c. In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species d. Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

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Last Answer : deoxygenated haemoglobin facilitates the transport of carbon dioxide

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

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

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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

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) measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.

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.

Last Answer : (a) estimating the amount of organic matter in sewage water

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 to play games like football (c) suffer from altitude sickness with symptoms like nausea, fatigue, etc. (d) have the usual RBC count but their haemoglobin has very high binding affinity to O2

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Last Answer : (a) have more RBCs and their haemoglobin has a lower binding affinity to O2

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) Have more RBCs and their haemoglobin has a lower binding affinity of O2 (3) Are not physically fit to play games like football (4) Suffer from altitude sickness with symptoms like nausea, fatigue, etc

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

Water comprises approximately ____ percent of cleaning and sanitizing solutions. a. 80 to 89 c. 90 to 95 b. 95 to 99 d. 75 to 85

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Last Answer : b. 95 to 99

The oxygen d issoc iat ion curve for hemoglobin is shifted to the right by (A) Decreased O2 tension (B) Decreased CO2 tension (C) Increased CO2 tension (D) Increased pH

Description : The oxygen d issoc iat ion curve for hemoglobin is shifted to the right by (A) Decreased O2 tension (B) Decreased CO2 tension (C) Increased CO2 tension (D) Increased pH

Last Answer : Answer : C

R.Q. is ratio of (a) CO2 produced to substrate consumed (b) CO2 produced to O2 consumed (c) oxygen consumed to water produced (d) oxygen consumed to CO2 produced

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Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that (A) Pure oxygen has been used for combustion (B) Nitrogen percentage in the fuel is very high (C) Excess air has been used for combustion (D) Hydrogen is not present in the fuel

Description : Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that (A) Pure oxygen has been used for combustion ... very high (C) Excess air has been used for combustion (D) Hydrogen is not present in the fuel

Last Answer : (C) Excess air has been used for combustion

The point of ultra-supercritical steam generator is to save on coal to heat the water and reduce ________ emissions. a. Oxygen (O2) b. Water (H2O) c. Carbon dioxide (CO2) d. Both ‘a’ and ‘c’

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Last Answer : c. Carbon dioxide (CO2)

This cause the depletion of ozone layer by decomposing ozone to oxygen . a) CFC b)UV radiations c)CO2 d)O2

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Last Answer : b)UV radiations

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

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

Carbonic anhydrase occurs in (a) lymphocytes (b) blood plasma (c) RBCs (d) leucocytes.

Description : Carbonic anhydrase occurs in (a) lymphocytes (b) blood plasma (c) RBCs (d) leucocytes.

Last Answer : (c) RBCs

The majority of carbon dioxide produced by our body cells is transported to the lungs as (a) attached to haemoglobin (b) dissolved in the blood (c) as bicarbonates (d) as carbonates.

Description : The majority of carbon dioxide produced by our body cells is transported to the lungs as (a) attached to haemoglobin (b) dissolved in the blood (c) as bicarbonates (d) as carbonates.

Last Answer : (c) as bicarbonates

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Description : Study the pathway given below. Atmospheric CO2 mesophyll cell Bundle sheath cell Plasma- desmata Plasma membrane Cell wall HCO Phosphoenol- 3 - pyruvate Cell wall C acid ... b) Fixation Transamination Regeneration (c) Fixation Decarboxylation Regeneration (d) Carboxylation Decarboxylation Reduction

Last Answer : (c) Fixation Decarboxylation Regeneration

Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+. (b) Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries. (c) About 60% of starch is hydrolysed by salivary amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Description : Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions ... amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Last Answer : (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na

Which blood vessels carry oxygen-rich blood from the heart to the rest of the body?

Description : Which blood vessels carry oxygen-rich blood from the heart to the rest of the body?

Last Answer : The large artery connected to the heart, called the Aorta.

Which of the following statement is true about RBCs in humans?

Description : Which of the following statement is true about RBCs in humans?

Last Answer : Which of the following statement is true about RBCs in humans? A. They do not carry `CO_(2) ... it is transported in dissolved state in blood plasma.

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Description : Globulins contained in human blood plasma are primarily involved in (a) osmotic balance of body fluids (b) oxygen transport in the blood (c) clotting of blood (d) defence mechanisms of body.

Last Answer : (d) defence mechanisms of body.

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Description : At pH 7.4, the ratio of bicarbonate : dissolved CO2 is (A) 1 : 1 (B) 10 : 1 (C) 20 : 1 (D) 40 : 1

Last Answer : Answer : C

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Last Answer : 33.7425, which will round to 33.74 ; percent off means tocalculate the percentage, then subtract from the originalamount.

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Description : How common has extinction been in the fossil record? A) Over 99 percent of all past species have become extinct. B) Roughly 50 percent of all past species have become extinct. C) Roughly 25 percent of all past species have become extinct. D) Very few species have ever become extinct.

Last Answer : A) Over 99 percent of all past species have become extinct.

Answer the following S. No Statement Chose the correct answer OR Fill-in-the-blanks 1 Fyrite measures CO2, O2 and SO2 True/False 2 Ultrasonic Flow Meter uses the principle of____& ____ Fill in the blanks 3 Non Contact Infrared Thermometer cannot measure temperature of objects placed in hazardous places True/False 4 To measure the RPM of a Flywheel, ______ type of RPM meter is used and for a visible shaft-end _______ type of RPM meter is used. Fill in the blanks 5 In a switch yard, _____ instrument is used to identify the loose joints and terminations Fill in the blanks 6 Every Designated Consumer shall have its first energy audit conducted by ________ Energy Auditor within ______ months of

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Blood haemoglobin has high affinity for (a) CO2 (b) CO (c) O2 (d) H

Description : Blood haemoglobin has high affinity for (a) CO2 (b) CO (c) O2 (d) H

Last Answer : Ans:(b)

When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe? (a) Falling CO2 concentration (b) Rising CO2 and falling O2 concentration (c) Falling O2 concentration (d) Rising CO2 concentration

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Description : Yawning occurs– (1) due to excess concentration of CO2 in blood (2) due to excess concentration of CO2 in lungs (3) due to excess concentration of O2 in lungs (4) None of these

Last Answer : due to excess concentration of CO2 in blood

The percentage of CO2 carrying capacity of whole blood by hemoglobin and oxyhemoglobin is (A) 20 (B) 40 (C) 60 (D) 80

Description : The percentage of CO2 carrying capacity of whole blood by hemoglobin and oxyhemoglobin is (A) 20 (B) 40 (C) 60 (D) 80

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Iron content in Indian iron ore is about __________ percent. (A) 80-85 (B) 60-65 (C) 40-45 (D) 20-25

Description : Iron content in Indian iron ore is about __________ percent. (A) 80-85 (B) 60-65 (C) 40-45 (D) 20-25

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Is carbon dioxide transported in the blood by plasma hemoglobin and bicarbonate ions?

Description : Is carbon dioxide transported in the blood by plasma hemoglobin and bicarbonate ions?

Last Answer : Need answer

Which of the following statement(s) is/are true concerning oxygen delivery? a. The amount of oxygen delivered to peripheral tissues is dependent upon the oxygen content in arterial blood and cardiac output b. Oxygen content is commonly measured in arterial blood c. The normal arterial-venous difference is 4 cc O2/dL d. Normal systemic oxygen delivery for a typical adult is approximately 1000 cc/min

Description : Which of the following statement(s) is/are true concerning oxygen delivery? a. The amount of oxygen delivered to peripheral tissues is dependent upon the oxygen content in arterial blood and cardiac ... O2/dL d. Normal systemic oxygen delivery for a typical adult is approximately 1000 cc/min

Last Answer : Answer: a, c, d The amount of oxygen that is delivered to peripheral tissues is the product of the oxygen content in arterial blood times the cardiac output. Normally, oxygen content of arterial blood is ... of venous blood is 16 cc/dL. Hence, the normal arterial-venous difference is 4 cc O2/dL

Which of the following statement(s) is/are true concerning O2 venous saturation monitoring? a. The normal saturation of mixed venous blood is 50% b. Mixed venous blood obtained for saturation monitoring can be obtained from any peripheral vein c. If arterial blood is fully saturated, the saturation of mixed venous blood is 80% d. In less than fully saturated blood, the difference between arterial and venous saturation corresponds to oxygen extraction

Description : Which of the following statement(s) is/are true concerning O2 venous saturation monitoring? a. The normal saturation of mixed venous blood is 50% b. Mixed venous blood obtained ... than fully saturated blood, the difference between arterial and venous saturation corresponds to oxygen extraction

Last Answer : Answer: c, d The relationship between oxygen delivery and oxygen consumption is reflected in the amount of oxygen in venous blood. Under normal circumstances, oxygen delivery is 1000 ... and venous saturation corresponds to the oxygen extraction, hence the oxygen delivery/oxygen consumption ratio

What gases are produced in anaerobic sludge digesters? (a) Methane and CO2 only (b) Methane, Hydrogen sulphide and CO2 (c) Methane, Hydrogen sulphide and O2 (d) Hydrogen sulphide and CO2

Description : What gases are produced in anaerobic sludge digesters? (a) Methane and CO2 only (b) Methane, Hydrogen sulphide and CO2 (c) Methane, Hydrogen sulphide and O2 (d) Hydrogen sulphide and CO2

Last Answer : (b) Methane, Hydrogen sulphide and CO2

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Description : The pyrogallol solution used in Orsat apparatus can absorb (A) Only O2 (B) Both O2 and CO2 (C) Both O2 and CO (D) All CO, CO2 , and O2

Last Answer : (B) Both O2 and CO2

The cuprous chloride used in orsat apparatus can absorb (A) Only CO (B) Both CO and CO2(C) Both CO and O2(D) All CO, CO2, and O2

Description : The cuprous chloride used in orsat apparatus can absorb (A) Only CO (B) Both CO and CO2 (C) Both CO and O2 (D) All CO, CO2 , and O2

Last Answer : (D) All CO, CO2 , and O2