Description : PGA as the first `CO_(2)` fixation product was discovered in photosynthesis of
Last Answer : PGA as the first `CO_(2)` fixation product was discovered in photosynthesis of A. Angiosperm B. Alga C. Bryophyte D. Gymnosperm
Description : Assertion: Assimilotary power in photosynthesis is generated in ETS occuring in thylakoid membrane . Reason : They are needed for `CO_(2)` reduction.
Last Answer : Assertion: Assimilotary power in photosynthesis is generated in ETS occuring in thylakoid membrane . ... If both Assertion and Reason are false.
Description : Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because
Last Answer : Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because A. ... 4)` plants has higher affinity for `CO_(2)`
Description : Source of `CO_(2)` for photosynthesis during day in CAM plant is
Last Answer : Source of `CO_(2)` for photosynthesis during day in CAM plant is A. 3-PGA B. Malic acid C. Oxaloacetic acid D. Pyruvate
Description : Reducing agent for `CO_(2)` fixation in bacterial photosynthesis is
Last Answer : Reducing agent for `CO_(2)` fixation in bacterial photosynthesis is A. `NADH_(2)` B. `NADPH_(2)` C. `FMNH_(2)` D. All of these
Description : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)`. Plants absorb `CO_(2)` during photosynthesis. In pre
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)` ... 4246.5 years B. 5384 yrs C. 4628 yrs D. 2684 yrs
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2)`. ... A. 4246 yrs B. 4624 yrs C. 4628 yrs D. 6248 yrs
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and `.^(14)CO_(2) ... H_(2)O` and `CO_(2)` D. mechanism is not confirmed
Last Answer : In the atmosphere, carbon dioxide is found in two forms, i.e., `.^(12)CO_(2)` and ` ... nitrogen by cosmic ray neutrons D. none of the above
Description : e primary mechanism by which general anaesthetics produce their action is: A. Affecting receptor operated ion channels in cerebral neurones B. Blocking voltage sensitive Na+ channels in neuronal ... activity of cerebral neurones D. Blocking production of high energy phosphates in the brain
Last Answer : A. Affecting receptor operated ion channels in cerebral neurones
Description : What monosaccharide is produced from photosynthesis that is a primary source of energy for cells?
Last Answer : Need answer
Description : What are the factors that for influencing photosynthesis also interfere with the gross primary productivity ?
Last Answer : Mainly water and light, but also mineral salts, temperature, and carbon dioxide are factors that interfere with the gross primary productivity.
Description : The primary energy source produced by photosynthesis is A A. Glucose B. Fats C. Carbohydrates D. Proteins
Last Answer : Glucose
Description : In an ecosystem the rate of production of organic matter during photosynthesis is termed as (a) secondary productivity (b) net productivity (c) net primary productivity (d) gross primary productivity.
Last Answer : (d) gross primary productivity.
Description : Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c ... d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant
Last Answer : (d) the primary fixation of CO2 is mediated via PEP carboxylase.
Description : In an ocean, the upper layer of water with sufficient light penetration to support photosynthesis by aquatic plants i known as the: w) free zone x) plant zone y) photic zone z) primary zone
Last Answer : ANSWER: Y -- PHOTIC ZONE
Description : What TWO primary chemical compounds are used in photosynthesis?
Last Answer : ANSWER: WATER AND CARBON DIOXIDE
Description : Assertion `:-` In the alveoli, dissociation of `CO_(2)` from carbamino-haemoglobin takes place Reason `:-` In the alveoli `P_(CO_(2))` is low and `P_(
Last Answer : Assertion `:-` In the alveoli, dissociation of `CO_(2)` from carbamino-haemoglobin takes place Reason ` ... . D. If both Assertion & Reason are false.
Description : Assertion` :-` Major part of `CO_(2)` is transported in the form of sodium bicarbonate. Reason `:-` 0.3 ml of `CO_(2)` is transported per 100ml of blo
Last Answer : Assertion` :-` Major part of `CO_(2)` is transported in the form of sodium bicarbonate. Reason `: ... False. D. If both Assertion & Reason are false.
Description : Assertion `:-` Bohr effect occur at the level of alveoli of lungs. Reason `:-` High concentratio of `CO_(2)` allow dissociation of oxyhaemoglobin.
Last Answer : Assertion `:-` Bohr effect occur at the level of alveoli of lungs. Reason `:-` High concentratio ... False. D. If both Assertion & Reason are false.
Description : Assertion `:-` The blood transports carbondioxide comparatively easily. Reason `:-` During `CO_(2)` transport chloride ions diffuse from plasma into t
Last Answer : Assertion `:-` The blood transports carbondioxide comparatively easily. Reason `:-` During `CO_(2)` ... D. If both Assertion & Reason are false.
Description : Assertion `:-` In the tissue high `P_(O_(2))`, low `P_(CO_(2))`, higher `H^(o+)` concentration conditions are favourable for dissociation of oxygen fr
Last Answer : Assertion `:-` In the tissue high `P_(O_(2))`, low `P_(CO_(2))`, higher `H^(o+)` ... Reason is False. D. If both Assertion & Reason are false.
Description : Assertion `:-` The amount of `CO_(20` that can diffuse through the diffusion membrane per unit differnece in partial pressure is much higher compared
Last Answer : Assertion `:-` The amount of `CO_(20` that can diffuse through the diffusion membrane per unit ... . D. If both Assertion & Reason are false.
Description : In Lungs there if definity exchange of ions between RBC and Plasma. Removal of `CO_(2)` from blood involves -
Last Answer : In Lungs there if definity exchange of ions between RBC and Plasma. Removal of `CO_(2)` from blood involves ... efflux of `HCO_(3)^(c-)` ions from RBC
Description : Blood do not become acidic although it carries `CO_(2)` because `:-`
Last Answer : Blood do not become acidic although it carries `CO_(2)` because `:-` A. `CO_(2)` is continously ... important role D. `CO_(2)` is absorbed by WBC
Description : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion concentration C-Temperture
Last Answer : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion ... A B. B,C C. A and C D. A,B,C
Description : Bulk of carbon dioxide `(CO_(2))` released from body tissues into the blood is present as
Last Answer : Bulk of carbon dioxide `(CO_(2))` released from body tissues into the blood is present as A ... . `70%` carbamino-haemoglobin and `30%` as bicarbonate
Description : CO is more toxic than `CO_(2)` because it `:`
Last Answer : CO is more toxic than `CO_(2)` because it `:` A. Damage lungs B. It destryos ... system D. reduces the oxygen carrying capacity of haemoglobin
Description : For proper transport of `O_(2)` and `CO_(2)` blood should be
Last Answer : For proper transport of `O_(2)` and `CO_(2)` blood should be A. Slightly acidic B. Strongly acidic C. Strongly alkaline D. Slightly alkaline
Description : Partial pressure of `CO_(2)` is higher `:-`
Last Answer : Partial pressure of `CO_(2)` is higher `:-` A. At alveolar level B. At tissue level C. In atmosphere D. In oxygenated blood
Description : What percentage of `CO_(2)` flows in blood in form of bicarbonates
Last Answer : What percentage of `CO_(2)` flows in blood in form of bicarbonates A. `7%` B. `23%` C. `50%` D. `70%`
Description : Every 100ml deoxygenated blood delivers around `___________________` `CO_(2)` to alveoli `:-`
Last Answer : Every 100ml deoxygenated blood delivers around `___________________` `CO_(2)` to alveoli `:-` A. 20ml B. 4 ml C. 5 ml D. 25ml
Description : `CO_(2)` is transported mainly as `:-`
Last Answer : `CO_(2)` is transported mainly as `:-` A. Carbominohaemoglobin B. Oxyhaemoglobin C. Bicarbonate D. Carboxyhaemoglobin
Description : When `CO_(2)` concentration in blood increases breathing becomes
Last Answer : When `CO_(2)` concentration in blood increases breathing becomes A. There is no effect on breathing B. Slow and deep C. Faster D. Shallower and slow
Description : What is the standard enthalpy change at 298 K for the following reaction? `CO_(2) (g)+ C("diamond") rarr 2CO(g)` Given : `DeltaH_(f)^(@)(CO,g) = - 110
Last Answer : What is the standard enthalpy change at 298 K for the following reaction? `CO_(2) (g)+ C("diamond") rarr 2CO(g ... `+172.5 kJ//mol` D. `170.5 kJ//mol`
Description : Which will elimination `CO_(2)` only on heating
Last Answer : Which will elimination `CO_(2)` only on heating A. `Me-underset(O)underset(||)C-CH_(2)-COOH` B. `Ph-underset(O ... (2)H` C. D. `CH_(2)=CH-CH_(2)-COOH`
Description : The highest amount of `CO_(2)` is evolved from
Last Answer : The highest amount of `CO_(2)` is evolved from A. Ocean B. Rivers C. Ponds D. Forests
Description : At present, the concentration of `CO_(2)` in the atmosphere is about:
Last Answer : At present, the concentration of `CO_(2)` in the atmosphere is about: A. 100ppm B. 240ppm C. 380 ppm D. 520 ppm
Description : `CO_(2)` content of atmosphere has increased in the last 150 years from
Last Answer : `CO_(2)` content of atmosphere has increased in the last 150 years from A. 200 ppm to 300 ppm B. 350 ... . 280 ppm to 370 ppm D. 120 ppm to 280 ppm
Description : Increase in atmospheric temperature due to `CO_(2)` is called :
Last Answer : Increase in atmospheric temperature due to `CO_(2)` is called : A. Pasteur effect B. Blackman effect C. Emersion effect D. Green-house effect
Description : It is estimated that out of the total global warming the relative contribution of `CO_(2)`, `CH_(4)` CFCs and `N_(2)O` are found respectively as:
Last Answer : It is estimated that out of the total global warming the relative contribution of `CO_(2)`, `CH_(4)` CFCs ... 60% C. 60%,20%,14%,6% D. 6%,14%,20%,60%
Description : Checking of radiating heat by atmospheric dust, water vapour, ozone, `CO_(2)` etc., is known as:
Last Answer : Checking of radiating heat by atmospheric dust, water vapour, ozone, `CO_(2)` etc., is known as ... effect C. Green house effect D. Solar effect.
Description : Assertion (A): Deforestation is one main factor contributing to global warming. Reason (R) : Besides `CO_(2)`, two other gases methane and CFCs are al
Last Answer : Assertion (A): Deforestation is one main factor contributing to global warming. Reason (R) : Besides ` ... true but reason is wrong D. Both are wrong
Description : Excess atmosperic `CO_(2)` increases greenhouse effect as it:
Last Answer : Excess atmosperic `CO_(2)` increases greenhouse effect as it: A. Is opaque to infra-red ... dust in the atmosphere D. Reduces atmospheric pressure.
Description : `CO_(2), CH_(4), N_(2)O` and CFCs are called greenhouse gases because they can absorb:
Last Answer : `CO_(2), CH_(4), N_(2)O` and CFCs are called greenhouse gases because they can absorb: ... radiations C. visible light radiations D. X-ray radiations
Last Answer : Checking of radiating heat by atmospheric dust, water vapour, ozone, `CO_(2)` etc., is known ... effect C. Radioactive effect D. Green house effect.
Description : The `CO_(2)` content by volume, in the atmospheric air is about
Last Answer : The `CO_(2)` content by volume, in the atmospheric air is about A. 3.6E-5 B. 0.00036 C. 0.0036 D. 0.036
Description : Level of atmospheric `CO_(2)` has increased in 2000 from
Last Answer : Level of atmospheric `CO_(2)` has increased in 2000 from A. 280 ppm to 360 ppm B. 250 ppm to 300 ppm C. 300 ppm to 340 ppm D. 330 ppm to 350 ppm
Description : In the redox reaction . `MnO_(4)^(-)+C^(2)O_(4)^(2-)+H^(+) rarr Mn^(2+)+CO_(2)+H_(2)O` (Unbalance equation) 20 mL of 0.1 M `KMnO_(4)` react quantitive
Last Answer : In the redox reaction . `MnO_(4)^(-)+C^(2)O_(4)^(2-)+H^(+) rarr Mn^(2+)+CO_(2)+H_(2)O` ( ... . 40 mL of 0.1 M oxalate D. 50 mL of 0.25 M oxalate