The oxygen evolved during photosynthesis comes from water molecules . Which one of the following pairs of elemnets is involved in this reaction ?

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The oxygen evolved during photosynthesis comes from water molecules . Which one of the ... Manganese and Potassium D. Magnesium and Molybdenum

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Description : The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction? (a) Magnesium and Molybdenum (b) Magnesium and Chlorine (c) Manganese and Chlorine (d) Manganese and Potassium

Last Answer : (c) Manganese and Chlorine

Description : The source of oxygen evolved during photosynthesis is

Last Answer : The source of oxygen evolved during photosynthesis is A. `H_(2)S` B. `H_(2)O` C. `CO_(2)` D. `HCO_(3)`

Description : During photosynthesis in plants, the gas evolved is - (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : (3) Oxygen Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism ... , through primary production, or indirectly, as the ultimate source of the energy in their food.

Description : During photosynthesis in plants, the gas evolved is (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : Oxygen

Description : Who demonstrated for the first time that in photosynthesis, oxygen is evolved from water

Last Answer : Who demonstrated for the first time that in photosynthesis, oxygen is evolved from water A. Spirogyra B. Volvox C. Chlamydomonas D. Chlorella

Description : During photosynthesis a plant uses energy from the sun to break apart glucose water and carbon dioxide. These molecules are used to make sugar to feed the plant and the plant then releases a by-product oxygen that humans breathe. this example shows that?

Last Answer : energy is not created but transferred to different forms (apex gang ;)

Description : Oxygen during photosynthesis comes from water was proved by `O^(18)` experiment

Last Answer : Oxygen during photosynthesis comes from water was proved by `O^(18)` experiment A. Ruben and Kamen B. Hill C. Warburg D. Blackman

Description : The oxygen liberated during photosynthesis comes from (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Last Answer : Water

Description : Oxygen liberated during photosynthesis comes from

Last Answer : Oxygen liberated during photosynthesis comes from A. Water B. `Co_(2)` C. Soil D. Atmosphere

Description : Oxygen liberated during photosynthesis comes from

Last Answer : Oxygen liberated during photosynthesis comes from A. `CO_(2)` B. `H_(2)O` C. Phosphoglyceric D. Chlorophyll

Description : In the first stage of photosynthesis, light energy splits water molecules leaving a by-product which is released. This byproduct is: a) hydrogen b) carbon dioxide c) oxygen d) methane

Last Answer : ANSWER: C -- oxygen 

Description : Oxygen which is vital for life is a product of photosynthesis and comes from – (1) carbonates from soil (2) carbon dioxide (3) water (4) oxides of mineral elements

Last Answer : (3) water Explanation: The unusually high concentration of oxygen has on Earth is the result of the oxygen cycle. This biogeochemical cycle describes the movement of oxygen within and ... Photosynthesis releases oxygen into the atmosphere, while respiration and decay remove it from the atmosphere.

Description : Oxygen which is vital for life is a product of photosynthesis and comes from (1) carbonates from soil (2) carbon dioxide (3) water (4) oxides of mineral elements

Last Answer : water

Description : Oxygen required for photosynthesis comes from

Last Answer : Ans. Water

Description : Genetic and biochemical similarities between contemporary cyanobacteria and eukaryoticchloroplasts are accepted to mean that A- .eukaryotes evolved from bacteria B- eukaryotes evolved from archaea C- . ... evolved in eukaryotes D- .cyanobacteria arose from chloroplasts which escaped from plant cells

Last Answer : eukaryotes evolved from archaea

Description : Which of the following molecules or ions involved in the Nitrogen Cycle do not contain oxygen atom? (1) Nitrite (2) Ammonia (3) Nitrate (4) Laughing gas

Last Answer : (2) Ammonia

Description : Oxygen comes from the environment and carbon dioxide in the end returns to the environment. How do small animals solve the problem of taking away and bringing these molecules from/to their cells? Why isn't that solution possible for larger animals?

Last Answer : Small animals whose tissues make direct contact or are very close to the environment, like cnidarians and poriferans, make gas exchange by diffusion. Larger animals with cells without direct ... the circulatory systems play this role. Breathing Process Review - Image Diversity: respiratory system

Description : Someone comes up to you and states that an early species of ape could not have evolved into the first humans because both apes and humans are alive today. This person has failed to grasp the nature of A) polygenesis. B) monogenesis. C) cladogenesis. D) anagenesis.

Last Answer : C) cladogenesis.

Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different

Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different

Description : How does the light reaction of photosynthesis affect Earth’s supply of oxygen?

Last Answer : by using chlorophyll fluorometers

Description : Which of the following is not a product of light reaction of photosynthesis? (a) ATP (b) NADH (c) NADPH (d) Oxygen

Last Answer : b) NADH

Description : Which of the following is not a product of light reaction of photosynthesis ? (1) ATP (2) NADH (3) NADPH (4) Oxygen

Last Answer : (2) NADH

Description : Is the correct equation for the reaction below. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor?

Last Answer : Yes, it is correct.C3H8 + 5 O2 = 3 CO2 + 4 H2O

Description : When zinc reacts with hydrochloric acid, the gas evolved is (a) Oxygen (b) Hydrogen (c) Chlorine (d) None of these

Last Answer : Ans:(b)

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Last Answer : (3) Carbon dioxide Explanation: When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) ... , more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.

Description : Zinc granules on treating with an acid X, form the zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and ... (c). X- Sulphuric acid and Y- Hydrogen gas (d). X- Hydrochloric acid and Y- Hydrogen gas

Last Answer : (c). X- Sulphuric acid and Y- Hydrogen gas

Description : This early atmosphere was rich in CO2 and H2O. How did oxygen enter our atmosphere? (a) Meteorites. (b) From organisms that evolved to convert CO2 and H20 into sugars (energy), resulting in the waste product oxygen. (c) Volcanic emissions. (d) Methanogenic bacteria.

Last Answer : (b) From organisms that evolved to convert CO2 and H20 into sugars (energy), resulting in the waste product oxygen.

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them 

Last Answer : Carbon dioxide

Description : Which gas comes out during photosynthesis?

Last Answer : Oxygen

Description : Differenitate between the following pairs: (a) BIT and BYTE (b) RAM and ROM (c) Epidemic and endemic (d) Photosynthesis and respiration (e) Herbivores and carnivores

Last Answer : (a) BIT and BYTE Bit: -the computer works with binary numbers, which are 0 and 1. Each binary digit is called a bit . Bit is the short for binary integer. It is the smallest ... include cat, dog, lion, tiger etc. Herbivores and carnivores constitute the food chain of a particular community.

Description : The splitting up of water molecules in plant cells in the presence of sunlight is called (A)Photophosphorylation (B) Photosynthesis (C) Photolysis (D) Phosphorylation

Last Answer : (C) Photolysis

Description : The first step for initiation of photosynthesis will be (a) photolysis of water (b) excitement of chlorophyll molecules due to absorption of light (c) ATP formation (d) glucose formation.

Last Answer : (b) excitement of chlorophyll molecules due to absorption of light

Description : In the first stage of photosynthesis, light energy is used to: a) move water molecules b) denature chlorophyll c) split water d) produce carbohydrates

Last Answer : ANSWER: C -- SPLIT WATER

Description : Algae often float on surface of water during the day but sink down during the night due to (a) Evolution and trapping of oxygen bubbles during the day in their photosynthesis (b) Becoming light as they ... (c) Warming action of sun during the day (d) Release of absorbed air by warming of water

Last Answer : Ans:(a)

Description : The liberation of oxygen during photosynthesis is due to - (1) hydrolysis of carbohydrates (2) photolysis of water (3) reduction of CO2 (4) breakdown of chlorophyll

Last Answer : (2) photolysis of water Explanation: In the process of photosynthesis, oxygen is produced from the photolysis of water. The photolysis of water occurs when light is used to renew split water and ... , also referred to as ATP. The hydrogen remains in the leaf and participates in further reactions.

Description : Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere

Last Answer : (2) Water Explanation: Oxygen liberated during photosynthesis is coming m6t.o create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.

Description : The source of oxygen generated during photosynthesis is: (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Last Answer : (1) water Explanation: The source of oxygen produced during photosynthesis is the splitting of water molecule into hydrogen and oxygen. Photosynthesis uses carbon dioxide and water, releasing ... inside organelles called chloroplasts, while in bacteria they are embedded in the plasma membrane.

Description : Molecular oxygen formed during plant photosynthesis is derived exclusively from: a) CO2 b) Water c) carbohydrates d) none of the above

Last Answer : ANSWER: B -- WATER

Description : The liberation of oxygen during photosynthesis is due to (1) hydrolysis of carbohydrates (2) photolysis of water (3) reduction of CO2 (4) breakdown of chlorophyll

Last Answer : photolysis of water

Description : The source of oxygen generated during photosynthesis is : (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Last Answer : water

Description : Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere

Last Answer : Water

Description : Among the following molecules, `(i)XeO_(3)(ii)XeOF_(4)(iii)XeF_(6)` those having same number of lone pairs on `Xe` are:

Last Answer : Among the following molecules, `(i)XeO_(3)(ii)XeOF_(4)(iii)XeF_(6)` those having same number of lone pairs on ... iii) only D. (D) (i),(ii) and (iii)

Description : What molecules absorbs sunlight for photosynthesis?

Last Answer : Chlorophyll absorbs sunlight in photosynthesis.

Description : If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring ? Justify your answer. -Science

Last Answer : When photosynthesis occurs during the day, the carbon dioxide released by plants by respiration is all used up and not released. Similarly, some of the oxygen produced during photosynthesis is used up in ... and taking in oxygen even during the day, it means that no photosynthesis is taking place.

Description : Which one of the following categories of organisms do not evolve oxygen during Photosynthesis

Last Answer : Which one of the following categories of organisms do not evolve oxygen during Photosynthesis A. Red ... plants with Kranz anatomy D. Blue green algae

Description : Which one of the following categories of organisms do not evolve oxygen during Photosynthesis

Last Answer : Which one of the following categories of organisms do not evolve oxygen during ... Photosynthetic green algae D. Photosynthetic bacteria

Description : The gas released during photosynthesis : (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Sulphur dioxide

Last Answer : (2) Oxygen Explanation: In plants, algae, and cyanobacteria, photosynthesis uses carbon dioxide and water, releasing oxygen as a waste product. Photosynthesis is vital for all aerobic life on Earth. In ... this process is: Carbon dioxide + Water + Light energy --> Carbohydrate + Oxygen + Water

Description : During photosynthesis the liberated gas is (1) Carbon dioxide (2) oxygen (3) Nitrogen (4) Hydrogen

Last Answer : (2) oxygen Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism ... water, releasing oxygen as a waste product.' Photosynthesis is vital for all aerobic life on Earth.

Description : Which of the following gases do plants and trees give out during photosynthesis? A. Hydrogen B. Nitrogen C. Oxygen (Answer) D. Carbon dioxide

Last Answer : C. Oxygen (Answer)

Description : How can you prove that oxygen is released during photosynthesis? 

Last Answer : Experiment: - i) Place a funnel over the shoot of hydra(water plant) in a beaker of water. ii) Invert a test tube filled with water over funnel. iii) Place funnel such that water can ... show that tube is rich with oxygen. viii) So it is proved that oxygen is released during photosynthesis.