Concept explainers
Is the following statement true or false? Unlike animals, which make many
To determine:
Whether the statement that “plants produce
Introduction:
Every organism present in the environment requires energy to sustain.
Answer to Problem 1SA
Correct answer:
The given statement “plants produce
Explanation of Solution
Plants perform photosynthesis to produce food. They use water and carbon dioxide and convert them into oxygen and sugar. This type of conversion produces some molecules of
However, it has been observed that the products of photosynthesis create aerobic conditions. The process that occurs in the presence of oxygen is termed as aerobic processes. Oxygen is one of the products formed by photosynthesis. As a result, plants start performing aerobic respiration to create energy. This indicates that plants produce
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Chapter 7 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
- Which of the following statements about photosynthesis is NOT true? Light independent reactions are very similar to the electron transport chain of cellular respiration Light is absolutely essential for both aspects of photosynthesis In order replace electrons, water is split to form oxygen gas Light dependent reactions are very similar, but in reverse, to the Krebs cycle and glycolysisarrow_forwardFill in the blanks with the sentences below: Energy from ATP and NADPH is used to fix CO2 and form PGAL (Calvin‑Benson cycle) Pyruvate is broken down into CO2 and acetyl CoA in the matrix Krebs cycle makes NADH molecules The absorbed energy is used to make ATP and NADPH (light reactions of photosynthesis) Glucose is broken down to form pyruvate (glycolysis) The proton gradient is used to make ATP molecules (chemiosmosis) in the mitochondria Acetyl CoA enters the Krebs Cycle ATP molecules are used to power cellular functions in all organisms 1. Light energy is absorbed by the thylakoid membranes in chloroplasts. 2. blank 3. blank 4. PGAL is used to make glucose molecules (energy storage). 5. blank 6. blank 7. blank 8. blank 9. NADH from the Krebs cycle and O2 from the light reactions of photosynthesis are used in the electron transport chain to create a proton gradient across the inner membrane of the mitochondria. 10. blank 11. blankarrow_forwardIn photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? Glucose is synthesized from CO2 and water during the light-dependent reaction The light-dependent reaction converts light energy to chemical energy stored in ATP The light-dependent reaction (non-cyclic) captures electrons in NADPH Light-excited electrons in chlorophyll provide the energy for ATP production None of the other four answers (All are true of the light-dependent reaction)arrow_forward
- Chloroplasts contain chlorophyll and carotenoids. Chlorophyll directly absorbs light for use in photosynthesis. Carotenoids absorb light and transfer the energy from light to chlorophyll. The efficiency of photosynthesis varies with the wavelengths of the light that illuminates the chloroplasts. In an experiment to study the relationship between the incoming light wavelengths and the chemical reactions of photosynthesis using a species of green algae, a researcher labeled the CO2 supply to the algae with 14C, and the H2O with 18O. Which of the following results is expected? More 14C is found in the algae when it is illuminated by green light than when it is illuminated by blue-violet and red light. More 18O is found in the algae when it is illuminated by green light than when it is illuminated by blue-violet and red light. More 14C is found in the algae when it is illuminated by blue-violet and red light than when it is illuminated by green light. More 18O is found in the algae when…arrow_forwardRead each statement carefully and determine if it is true or false for photosynthesis:arrow_forwardWhy do the cells of photosynthetic organisms contain accessory pigments? Accessory pigments provide a backup source of energy if the main pigment type fails. Accessory pigments direct light toward the primary pigment. Accessory pigments optimize the amount of energy that can be harvested in specific environments. Accessory pigments provide structural support for the primary pigments. Accessory pigments allow photosynthesis to occur at any time of the day.arrow_forward
- Choose the statement that correctly identifies the process and location that produces most ATP from ADP during cellular respiration. glycolysis in cell cytoplasm Calvin cycle in chloroplasts Krebs cycle in mitochondria electron transport in mitochondriaarrow_forwardCells are open systems that exchange matter and energy with their surroundings. Which of the following best explains why plant cells require sunlight to make organic compounds, according to Gibbs’s theory of free energy? The photosynthetic reaction releases free energy to the surroundings. The photosynthetic reaction’s free energy is in equilibrium. The reactants of photosynthesis have less free energy than the products. The change in free energy (∆G) of the photosynthetic system is less than zero.arrow_forwardCarbon fixation in plants is catalyzed by what enzyme? What is the name given to an organism (plant, bacteria or algae) that can produce its own food from organic molecules specifically by using photosynthesis? Which molecule leaves the Calvin cycle to be converted into glucose? What is the overall purpose of cellular respiration in photosynthetic organisms? In which plant organ does photosynthesis most commonly occur? Question options: the root the stem the leaf the flowerarrow_forward
- Identify the correct compound to create a chemical equation that represents Photosynthesis. + Drag and drop the right reactants and products of the Light Dependent and Light Independent (aka Dark) Reactions. Chloroplast NADPH NADP+ ADP Water - H20 Calvin Cycle Glucose - C6H1206 ATP Light Reaction Thylakoids Stroma O2 Carbon Dioxide CO2 Identify the reactants and products that are used and given off by plants and animals.arrow_forwardPlant chloroplasts are able to generate which of the following inorganic product molecules during oxygenic photosynthesis? C6H12O6 CO CO2 O2 H2Sarrow_forwardIdentify each statement below as True or False. * Another name for phase I of photosynthesis is electron transport. Phase I of photosynthesis stores energy in NADPH molecules. Photosynthesis takes place inside the mitochondria. Energy is stored in water molecules during phase I of photosynthesis. Phase I of photosynthesis is also known a the light- dependent reactions. Photosynthesis phase I stores energy that is used to power phase II. Phase I of photosynthesis stores energy in ATP molecules. Phase I of photosynthesis can only take place when light is available. Light is not required for phase I of photosynthesis. The process of photosynthesis takes in the chloroplasts of a cell. place True ο ο ο ο ο ο ο ο False O оarrow_forward
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