Plant Physiology - Photosynthesis Questions and Answers

This year we have explored the Carbon Cycle and how Carbon cycles within the ecosystem Task Explain the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere atmosphere hydrosphere and lithosphere in an ecosystem In your model be sure to identify and include The inputs and outputs of photosynthesis in a representative organism The inputs and outputs of cellular respiration in a representative organism Places where carbon may exist in each of Earth s four spheres B I POSSIBLE POINTS 3 13 U E

Light Energy CO Water CHLOROPLAST O a decrease in respiration O an increase in respiration O a decrease in the photosynthesis O an increase in photosynthesis CK Cocco cocco POSSIBLE POINTS 1 25 PHOTOSYNTHESIS Glucose Chemical Energy CELL RESPIRATION MITOCHONDRIA Based on the diagram above which of these would lead to an increase in carbon dioxide in the atmosphere Select the TWO 2 that apply 1 2 3 4 5 6 7

Label the diagram of Photosynthesis Cellular Respiration M mitochondria Photosynthesis Sugar producing process Cellular Respiration Energy producing process Sunlight Solar Energy CO2 Carbon Dioxide heat Cell Energy H2O Water Glucose C6H1206 02 Oxygen Gas POSSIBLE PO

Which two sentences describe evidence that chloroplasts began as prokaryotes A A chloroplast reproduces itself through binary fission B A chloroplast has its own DNA that is different from that of the cell C The enzymes in a chloroplast s plasma membrane are different from those in prokaryotic cells D A chloroplast has a single membrane while most organelles have a double membrane

Please match the sentence fragments on the left with the correct ending on the right A redox reaction involves the transfer of In photosynthesis carbon dioxide is reduced to form In respiration sugar is oxidized to form The location of the light reactions is the The Calvin cycle occurs in the Carbon fixation Choose sugar sugar thylakoid stroma sugar

Producers in an ecosystem generally use photosynthesis to make their own food Which of the following best describe impacts of photosynthesis on producers and the environment Choose 2 answers B D Oxygen is converted into carbon dioxide which is released into the atmosphere Carbon dioxide is used to make glucose which is stored in the producer Sugar molecules are converted into water which is released into the soil Light energy is converted into chemical energy which can be used by the producer

Photosynthesis ATP and methane OB protein and nucleic acids OC glucose and oxygen O D carbon dioxide and water 2 Cellular respiration In the respiration photosynthesis cycle shown above what are the products of cellular respiration that belong in box 2 O A

irections Drag each correct label to its location on the diagram Not all labels will be used diagram that models the process of photosynthesis is shown below Complete the diagram by filling in the missing la light nitrogen Reactants water carbon dioxide glucose Energy Source Chloroplast oxygen Products Primary Energy Storage Molecule Waste Product

The ultimate source of energy for the Calvin Cycle is A the sun B the Kreb s Cycle C the oxidation of water D the light reactions

The type of photophosphorylation that reduces NADP to NADPH is substrate level photo phosphory lation B non cyclic photo phosphory lation C cyclic photo phosphory lation

A photosystem is a that is are involved in the capturing of sunlight A complex protein structure B type of cholorplast C light producing center series of steps

5 Which tubes showed a color change of phenol red Do these results agree with your hypothesis 6 Why did the change in color occur LAB ACTIVITY 2 PIGMENTS AND THEIR ROLE IN PHOTOSYNTHESIS Different kinds of pigments exist in plants By definition a pigment is a compound that absorbs light Each pigment absorbs visible light at certain wavelengths and reflects the color of wavelength that is not absorbed Black pigment is the only exception which absorbs all wavelengths of visible light and reflects none Chlorophyll a and b are green pigments found in the chloroplasts of photosynthetic plants and are green because they reflect green light while absorbing blue and red light Chlorophyll a is the primary photosynthetic pigment in that it absorbs the greatest amount of light Therefore red and blue light needs to be absorbed for photosynthesis to occur Other pigments are found in chloroplasts called ntc cuch ar chlorophyll h and carotenoids In general accessory pigments

7 What is your hypothesis regarding which pigment s will be involved in photosynthesis believe that J 8 Which area s of the leaf will indicate a positive reaction to 12KI and which region s will show a negative reaction to I KI I believe the tu ma aren Where is starch Procedure continued 4 When the leaf has been sufficiently decolorized rinse it with DI water over a waste beaker DO NOT THROW AWAY THE ETHANOL YET Place the leaf in a petri dish and apply 10 drops of iodine 12KI over the leaf and observe the reaction 9 Sketch or take a picture to show how the leaf looks after the starch test 10 Which pigment is responsible for photosynthesis Explain

Photosynthesis and Cellular Respiration Sunlight Energy 777 Carbon Dietide GRUSS ATP Glacase Oxygen Carbon dioxide and water released by ellular respiration are ed in photosynthesis The diagram shows the relationship between photosynthesis and cellular respiration and the organelles in which they occur Which statement describes how photosynthesis and cellular respiration are interrelated Oxygen is produced during cellular respiration and stored during photosynthesis Photosynthesis releases the energy that is stored during the process of cellular respiration Glucose is used durin cellular respiration to produce food that is broken down during photosynthesis

Glycolysis occurs in which part of the cell O Ribosomes O Mitochondria O Cytoplasm O DNA

utotrophs who can not do photosynthes citric acid cycle aerobic respiration O anaerobic respiration O fermentation O chemolithotrophy

Let s say you have a plant that contains only chlorophyll a and b as its photosynthetic pigments Which of light would work best to grow this plant Explain why colors wavelengths

Draw one product of an elimination reaction between the molecules below Note There may be several correct answers You only need to draw one of them You do not need to draw any of the side products of the reaction C C C T X Br X Click and drag to start drawing a structure

In this organelle carbon dioxide and water are converted to O Chitin O Carbon dioxide Lipids O Glucose and oxygen

Leaf Phloem Root Plant Species American elm Ulmus americana Xylem Field Notes Physical Symptoms Wilting followed by yellowing browning of leaves in early summer Premature shedding of leaves before autumn Rotale 2 In the diagnosis of Case 2 which mechanism is directly impacted in the tissues or structure Select the correct option and then select the Submit button Progressive death of entire branches ultimately death of roots and of entire plant typically over several years Soil pH normal for the region Soil nutrients normal for the region Laboratory Metabolic Analysis Dark streaks in sapwood area between vascular cambium and the remains of primary tissue observable when branches are sectioned Reduced photosynthetic rate Very low water levels in canopy of tree

Plants use two electrons Ophotosystems emissions O pigments in the light dependent reactions

Lernr Courses General Biology GO PHOTOSYNTHESIS customi The purpose of the Calvin c lipids nucleic acids

Process Function Photosynthesis Energy capture Respiration 1 Bl inks Use the chart to answer the questions that follow Location Reactants Products 2 Mitochondria Carbon dioxide and water 3 4 Carbon dioxide and water Question 16 Which term goes in the cell labeled 47 chloroplast O A B C D water and oxygen oxygen and glucose energy release

Drag and drop the terms to match with their description and access the understanding of photosynthesis Definition Organism that uses sunlight to produce organic molecules Molecule that can absorb and reflect wavelengths of light Tiny openings in the leaf surface that permits the exchanges of gases and water Liquid portion of the chloroplast where carbon fixation occurs Membranous discs containing photosynthetic pigments where the light dependent reactions occur Space where hydrogen protons accumulate generating an electrochemical gradient for light driven electron transport Photoautotroph Thylakoid Thylakoid lumen Pigment Stoma Stroma Term

Surnr Courses General Biology Assignments Photosynthesis A PHOTOSYNTHESIS customized Mark each statement as True False to classify them as Produces glucose as an end product Uses oxygen Occurs in heterotrophs

CO from the air Water QUESTION 4 If you were growing a tray of lawn grasses i optimal growth Red

Start with light energy and assemble this factory to it s final product by choosing the correct order of letters Elimination Tool Select one answer A DBCAE B EDCAB C CAFDB

Select the statement s that correctly describe s chemic Chemiosmosis creates a concentration gradient and an ele Hydrogen ions freely cross the cristae and reenter the mito As hydrogen ions pass through the ATP synthase protein

Drag and drop the characteristics of cellular respiration and photosynthesis to their correct category Photosynthesis Cellular Respiration Anabolic reaction Converts solar energy into chemical energy Produces ATP for the cell to use Occurs in all living things Converts chemical energy into cellular energy Uses ATP to fuel the process Catabolic reaction Releases a great deal of energy Occurs in plants Requires the input of energy

Question Listen The end products of the citric acid cycle include all of the following O pyruvate O CO2 OATP FADH2

athways is common in aerobic and anaerobic

Listen ATP can be generated by the Oxidation Substrate level Phosphorylation Multiplication Decarboxylation of ADP

SB5 b lipids ODNA proteins Producers use energy from the Sun to create or usable chemical energy

What part of photosynthesis is also seen in cellular respiration

The energy for the production of ATP comes from the breakdown of a glucose molecule via many enzyme mediated chemical reactions occurring at several distinct stages of cellular respiration During this time the chemical energy stored in glucose is continually trans ferred across these reactions Which of the following describes the form in which most of the energy from the glucose molecule is stored just before the oxidative phosphorylation stage in aerobic cellular respiration A B C D NADH acetyl COA FADH pyruvate

A certain photosynthetic species was found to contain two additional pigments beyond those that are found in most photosynthetic species Researchers studying this species claim that it is better adapted to survive under changes in environmental conditions than species with only one type of pigment Which of the following best supports this claim A B C D The pigment combination allows the organism to absorb heat as well as light increasing its overall available energy The additional pigments allow the species to outcompete other species for the same wavelengths of light commonly used in photosynthesis The additional pigments allow the species to capture energy from wavelengths of light that the other photosynthetic species cannot use The increased pigment concentration better facilitates energy production within the cells of the species

Which of the following identifies the process that is found in both photosynthesis and cellu lar respiration A B C D citric acid cycle glycolysis chemiosmosis Calvin cycle

Researchers are studying the absorption of light by pigments within spinach leaves To ac complish this they have designed an experiment in which the rate of oxygen production was measured as a function of light frequency The results of the experiment are shown below A B C relative amount of O produced in one hour Which of the following best explains the results shown in the graph D 400 500 600 wavelength of light nm 700 Pigments capture light energy more efficiently at lower wavelengths than at higher wavelengths Pigments capture light energy more efficiently at higher wavelengths than at lower wavelengths Pigments capture light energy efficiently at all wavelengths Pigments capture light energy most efficiently within a specific range of wavelengths

In an experiment studying the reaction between a certain substrate and an enzyme a re searcher prepares a reaction mixture by dissolving the substrate in a solution adding a small amount of the enzyme to the solution and then measuring the amount of product that is formed over time The data are represented in the graph below Amount of product as a function of time A Which of the following best predicts the immediate result of adding more substrate to the reaction mixture at the point indicated by the downward arrow in the figure B amount of product C D time The amount of product will decrease until the reaction reaches its saturation point or until the enzyme is used up by the reaction The amount of product will increase without stopping because the enzyme will remain unchanged by the reaction The amount of product will increase until the reaction reaches its saturation point or un til the substrate is used up by the reaction The amount of product will decrease until the reaction rate goes to zero

A researcher finds that under some conditions plants will produce elevated amounts of oxygen in the presence of sunlight This increase will be coupled with the increased pro duction of which of the following molecules A B C6H12O6 H O

Which of the following describes the role of acetyl CoA in cellular respiration A B C D Acetyl CoA is the reactant in the pyruvate oxidation reaction Acetyl COA acts as the first reactant in the citric acid cycle Acetyl CoA is an intermediary product of glycolysis Acetyl CoA acts as an electron carrier for the electron transport chain

According to the laws of thermodynamics only a portion of the light energy that is cap tured by green plant cells can become available for biochemical processes Which of the following provides the best explanation for this principle A B C D Captured sunlight energy is stored in the molecular bonds of organic molecules includ ing simple sugars and starch Light capturing pigment molecules in green plants absorb red blue and violet light but reflect green light The energy of a photon of light is dependent on its frequency which is correspondent to its wavelength As light energy is converted to chemical energy by metabolic processes some of the en ergy is lost as heat

Which of the following organisms serve as food for primary consumers O A Secondary consumers OB Decomposers OC Producers OD Predators

21 22 23 24 25 How are the reactants represented in the chemical equation for photosynthesis O 6CO O2 O 6CO 6H2O O C6H12O6 60 O C6H12O6 6H O

The following can be used to write a word equation for photosynthesis 1 carbon dioxide and water 2 light and chlorophyll 3 glucose and oxygen Which shows a correct word equation for photosynthesis A 12 in the presence of 3 B 13 in the presence of 2 C 23 in the presence of 1 D 31 in the presence of 2 K

Which statement is true for some photosynthesizing animals O A Some carry out photosynthesis through the chloroplasts they incorporate into their cells OB They conduct light dependent reactions and the Calvin cycle in the mitochondria OC They re true autotrophs because they can photosynthesize on their own They re single celled organisms that move like animals but they contain chloroplasts

10 Fermentation takes place in the a mitochondria b nucleus c cytoplasm d endoplasmic reticulum

Why do leaves lose their green color in the fall a Plants absorb new pigments from the soil b Chlorophyll a breaks down in the fall allowing other pigments to be seen c Other pigments become more concentrated in the fall and mask the green color d Chlorophyll absorbs different wavelengths of light in the fall

9 Which of the following processes produces the most ATP a Alcoholic fermentation b Lactic acid fermentation c Aerobic respiration d Photosynthesis ja sill astotamos and indit ov feiestinved

5 Which gas es are created in the light dependent reactions of photosynthesis a O only b CO2 only c O2 and CO d H O O2 and CO