Which of the following is NOT made during the light reactions of photosynthesis?

Question

Which of the following is NOT made during the light reactions of photosynthesis? O_2 NADPH ATP Glucose In Glycolysis, glucose is split to produce two molecules of ____. starch carbon dioxide pyruvate NADPH In the Oxidative Phosphorylation step of cellular respiration, the energy for ATP synthesis comes from: Oxygen the H+ concentration gradient water carbon dioxide Which of the following statements about cellular respiration and photosynthesis is TRUE? Cellular respiration and photosynthesis occur in the same organelle. Both photosynthesis and cellular respiration involve electron transport chains. Photosynthesis stores energy as glucose, while cellular respiration stores it as fatty acids. Cellular respiration occurs only in animals, and photosynthesis occurs only in plants. Which process occurs in both Cellular Respiration and Fermentation? Glycolysis Oxidative Phosphorylation Kerbs Cycle Calvin cycle Which stage of cellular respiration produces the most ATP? Glycolysis Pyruvate oxidation Kerbs Cycle Oxidative phosphorylation Which is the only phase of cellular respiration that does NOT occur inside the mitochondrion? Glycolysis oxidative phosphorylation pyruvate oxidation Kerbs cycle The main product of cellular respiration is: Water Glucose ATP NADH Proteins made for export to other cells are manufactured in the ____ and packed in the ____: Smooth endoplasmic reticulum..Golgi apparatus Rough endoplasmic reticulum..Golgi apparatus Nucleus....rough endoplasmic reticulum Rough endoplasmic reticulum....smooth endoplasmic reticulum The _____ is a flap of tissue that is open during breathing and closed (to prevent choking) when food is being swallowed. Trachea Larynx Epiglottis Pharynx

Explanation / Answer

Ans 1: Glucose is not made in the light reaction of photosynthesis.

Explanation: Photosynthesis is a process by which green plants make their own food from carbon dioxide and water in the presence of sunlight and release oxygen as a byproduct. The process of photosynthesis is accomplished in two different reactions, namely, Light reactions and dark reactions (Calvin cycle).

Light reactions occur during daytime, as the chlorophyll is able to trap the energy from sunlight during day time. This entrapped energy is used to generate high-energy electrons with great reducing potential which in turn results in the production of NADPH and ATP. water is used to produce the oxygen in light reaction. The Calvin Cycle

Dark reaction, the second stage of photosynthesis uses the energy stored in NADPH and ATP to produce glucose from atmospheric carbon dioxide.

Ans 2: In Glycolysis, Glucose is split to produce two molecules of pyruvate. So, option c is correct. Starch and NADPH are formed during photosynthesis. Carbon dioxide is generated as a byproduct of respiration.

Ans 3: In the oxidative phosphorylation step of cellular respiration, the energy for ATP synthesis comes from (b) the H+ concentration gradient.

Explanation: Oxidative phosphorylation occurs in the intermembrane space of mitochondria in a series of steps in electron transport chain. NAD and FAD molecules produce hydrogen atoms, these hydrogen atoms get split into electrons and protons. Flow of electrons produces energy, which is used to driven the protons (H+) out of the matrix into the intermembrane space. This creates a proton gradient across intermembrane space and matrix of mitochondria resulting the protons to diffuse back into the matrix down to electrochemical gradient through proton channels. These proton channels are associated with ATP synthesis from ADP and inorganic phosphate using the enzyme ATP synthase.

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