You are doing an experiment to measure the amount of oxygen in the air surrounding a plant when it is in thelight and the dark. What process is happening from 0-30 minutes? Explain by referring to the graph and theequations.photosynthesis6CO, + 6H;0 + energy → C,HO, + 60,energy inaerobic respirationC,HO 60 → 6CO, + 6H;0 + energyenergy out02 level vs Time19.719.6519.6stvAaMacBook AirDIIDD80888FBF9F10F11F5F6F3F4&23$8.%3D3457{WRYGJVMcommandoptionnd.. .-E 02 level vs Time19.719.6519.619.5519.5204060Time (Minutes)etvMacBook Air80888DIIF7F9F10F3F4F5%23$&9.%3D4ERYFGHくCVM3D.. .-レ* 00つコBT*302 level (%)

Green plants have special organelles in the cell. These are chloroplast. These organelles are…

You are doing an experiment to measure the amount of oxygen in the air surrounding a plant when it is in the light and the dark. What process is happening from 0-30 minutes? Explain by referring to the graph and the equations. photosynthesis 6CO, + 6H,0 + energy C,H,0, + 60; - energy in aerobic respiration + 6CO, + 6H,O + energy energy out C.HO. 60 02 level vs Time 19.7 19.65 19.6

You are doing an experiment to measure the amount of oxygen in the air surrounding a plant when it is in the light and the dark. What process is happening from 0-30 minutes? Explain by referring to the graph and the equations. photosynthesis 6CO, + 6H,0 + energy C,H,0, + 60; - energy in aerobic respiration + 6CO, + 6H,O + energy energy out C.HO. 60 02 level vs Time 19.7 19.65 19.6

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter8: Photosynthesis

Section: Chapter Questions

Problem 3VCQ: Figure 8.18 Which of the following statements is true? In photosynthesis, oxygen, carbon dioxide,...

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Photosynthesis directly opposes respiration in determining how plants influence atmospheric CO2 concentrations. When a leaf is in the light, both photosynthesis and respiration are occurring simultaneously. The data in the Table were collected from the leaf of a sagebrush plant that was enclosed in a chamber that measures the rate of CO2 exchange. The same leaf was used to collect the data in Interpret the Data in Chapter 7. Respiration is shown as a negative and photosynthesis as a positive rate of CO2 exchange. The net photosynthesis rate is the amount of CO2 (in micromoles per square meter per second) assimilated by the leaf while respiration is occurring; a positive value indicates more photosynthesis is occurring than respiration. The light exposed to the leaf is quantified as the number of photons in the 400 to 700 nm wavelength, the photosynthetic photon flux density (PPFD); 2,000 mol/m2/s is equivalent to the amount of light occurring at midday in full Sun. Observation Photosynthetic Photon Flux Density (PPFD) (mol/m2/s) Net Photosynthesis (mol/m2/s) 1 2,000 9.1 2 1,500 8.4 3 1,250 8.2 4 1,000 7.4 5 750 6.3 6 500 4.8 7 250 2.2 8 0 -2.0 Why is net photosynthesis negative when PPFD is zero? Looking at the respiration data from Interpret the Data in Chapter 7, at what temperature do you think these data were collected? Source: Data based on unpublished research by Brent Ewers, University of Wyoming.
The Overall Free Energy Change for Photosynthetic NADP+ Reduction What is the overall free energy change (G) for noncyclic photosynthetic electron transport? 4 (700-nm photons) + 4 (680-nm photons) + 2 H2O + 2 NADP+O2 + 2 NADPH + 2H+
Match each term with its most suitable description. ____ PGAL formation a. absorbs light ____CO2 fixation b. converts light to chemical energy ____ autotroph c. self-feeder ____ ATP forms NADPH does not d. electrons cycle back to photosystem ____ photorespiration e. problem in C3 plants ____ photosynthesis f. Calvin-Benson cycle product ____ pigment g. water molecules split ____ photolysis in photosynthesis h. rubisco function
Which of the following substances does not participate in the Calvin-Benson cycle? a. ATP c. NADPH e. PGAL b. O2 d. RuBP f. CO2
Diagram 7: Rate of Photosynthesis with increasing light intensity 200 Pmax 150 100 - 50 -50 - -100 100 200 300 400 500 600 700 Light Intensity (arbitrary units) Glossary: 1. Pmax: The maximum pressure of oxygen gas. 2. Arbitrary units: The use of this term mean the graph is not using specific units as lc intensity could be measured in lumens and oxygen production could have been me mm of Hg Identify the light intensity in which oxygen production first begins to reach its maximum value. 200 units 100 units 700 units 500 units Oxygen Production (syun Kegque)
using a 14CO2 fixation assimilation method,a plant is found to be fixing carbon at a rate of 140mgh-1 .dm-2 leaf area in the sunlight. In darkness the same plant is losing 30mgh-1.dm-2 . Calculate the photosynthetic capacity of the plant and state with reasons to which photosynthetic type the plant belongs
Calculate the gross rate of photosynthesis (mm/hr) for Elodea if when measuring net photosynthesis, the water level moved up 7mm from the initial level in 10 min, and when measuring cellular respiration it took 15 minutes for the water level to move down 1 mm. 48 mm/hr 42 mm/hr 46 mm/hr 38 mm/hr 50 mm/hr 30 mm/hr
Number of oxygen bubbles/Min Number of oxygen bubbles/Min ++ +++> +++ +++> Number of oxygen bubbles/Min Number of oxygen bubbles/Min + + + ++> Sugar molecules dltiuseu Uut UI JUIU Which of the following graphs shows the effect of light intensity on the rate of photosynthesis in a pond weed (Elodea)? A 60 60 50 50 40 + 40 30 30 + 20 20 10 -> 하하 20 25 30 10 15 20 25 30 Distance from light source (cm) Distance from light source (cm) C 50 40 30 10 - 10 to ts 20 25 30 Distance from light source (cm) 10 25 30 Distance from light source (cm) Biology/5090/1 Z2010 [T
Which of the following statements about the light reactions of photosynthesis are correct? 1. Absorption of light does one thing: it makes chlorophyll easier to oxidize. 2. In PSII, the rate of damage to the D1 protein can never exceeds the rate of repair. 3. Electron transport is spontaneous (exergonic) as electrons move from P680* to P700+. 4. Compared to anoxygenic photosynthesis, in oxygenic photosynthesis less light needs to be absorbed to reduce NADP+. A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1,2,3 and 4 are correct
In a photosynthetic investigation, a student measured the following pH of the stroma and the inner thylakoid compartments of spinach leaf cells at the conclusion of the experiment. Source of Fluid pH (mean) Standard Error of Mean (SEM) Stroma 8.2 0.75 Inner compartment of thylakoid 5.6 0.35 Describe the stages of photosynthesis. Explain the need for a constant supply of inorganic carbon dioxide.
Step Input Output Light Dependent Reactions Light Independent Reactions (Dark Reactions) Write the full chemical equation for photosynthesis below: Eactors that Affect Photosynthesis Gas exchange usually results in a loss of o Desert plants have special, • Photosynthesis has an optimal and is limited by amounts of Section 3: Cellular Respiration (Aerobic Respiration) All living things need The food ( is broken down to and energy is released in the form of Write the chemical equation for cellular respiration below: Step 1: Glycolysis step process that breaks down into two smaller Results in small amounts of Does not require (anaerobic) Occurs outside Input Output © 2020 to present Keystone Sclence - All Rights Reserved www.teacherspayteochers.com/Store/Keystone-Science
Identify the chemical basis for ApH and AY across the chloroplast thylakoid membrane by dragging the descriptions to their targets. Be sure to notice that the upper arrow iindicates ApH and the lower arrow indicates ΔΨ. ATP synthase complex H+ N ADP + P₁ Light energy ATP H*N Photosystem I/II- Chloroplast N side Aus PN ApH T + Thylakoid membrane HTp H+p Lumen Stroma P side Proton circuit A B High H concentration Low positive charge High positive charge Low H+ concentration Within the image, identify the types of proton translocation by dragging each label to its target. O XH₂ 2H+ + Z 2 H* ZH₂ O XH₂ Z 2H+ ZH₂ 2H+ C A B Proton pump Redox loop