Biology: Science for Life with Physiology (5th Edition)
5th Edition
ISBN: 9780321922212
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 5, Problem 9LTB
Summary Introduction
Introduction:
Photorespiration occurs when the stomata opening is closed. In this process, the photosynthesis rate is reduced. During this mechanism, oxygen is added by rubisco rather than CO2 to RuBP in the first phase of the light-independent reaction. In this reaction, the oxygen is used, and the carbon dioxide level is low inside leaves because of closed stomata.
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In C4 metabolism _____________ carries the newly incorporated carbon and oxygen atoms from mesophyll cells to bundle sheath cells.
True or false
Chlorophyll absorbs the wavelength from either end of the spectrum, blue to red, but not green since it is reflected.
THE EFFECTS OF PHOTOTROPISM ON A PLANT
Materials:
a shoebox, extra cardboard, șcissors, tape, Bean plants, small cups full of soil
Procedure:
1. Plant four bean seeds in each of the soilcups. Make sure they're evenly spaced,
and plant them just a half inch under the soil.
2. Water the cups, and dump out any excess water (be careful not to tip the soil
and seeds out). Set aside.
3. Cut a large hole at one end of the shoebox. Hold the box up to the light and
be sure to tape up any other spaces where light shines through.
4. Cut two pieces of cardboard in the following sizes:
5. First make both pieces half the width of the shoebox.
6. Then make both pieces the same height of the shoebox.
7. Now divide the box in thirds and tape one cut cardboard piece on the left side
of the box at the one-third mark. Next, tape the other cardboard piece on the
right side of the box at the two-thirds mark.
8. Documents your observations.
The box should look like the box shown below.
Place the small potted…
Chapter 5 Solutions
Biology: Science for Life with Physiology (5th Edition)
Ch. 5 - Prob. 1LTBCh. 5 - Carbon dioxide functions as a greenhouse gas by...Ch. 5 - Prob. 3LTBCh. 5 - Prob. 4LTBCh. 5 - Stomata on a plants surface ___________. prevent...Ch. 5 - Prob. 6LTBCh. 5 - Prob. 7LTBCh. 5 - Which of the following human activities generates...Ch. 5 - Prob. 9LTBCh. 5 - Prob. 10LTB
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- Please match correctly each statement in column 1 to its convenient answer in column 2. Compensation Rubisco Higher CO2 compensation method pH method point Technique used to distinguish between C3 and C4 plant C4 plant C3 plant Equilibrium state between photosynthesis and respiration о оо оо O оо O Oarrow_forwardDuring photosynthesis, the synthesis of ATP is driven by the flow of H+ from the thylakoid lumen into the stroma via the enzyme ATP synthase. This synthesis of ATP in chloroplast achieved by a chemiosmotic mechanism is specifically called __________.arrow_forwardPhotoinhibition is when the rate of photosynthesis is decreased or even stopped due to excessive light exposure resulting in the reduction of plant growth. True Falsearrow_forward
- Label chloroplast envelope Stroma Thylakoid Grana Granaarrow_forwardWhen a photon is absorbed by a chlorophyll, the energy of the photon is transferred to an electron, which is energized from its ground state to an excited state. This event in photosynthesis is specifically called __________.arrow_forwardPart of the light-independent reactions is known as fixation because ________. ATP is fixed into a more stable form ATP is fixed into a more stable form it converts inorganic carbon dioxide into organic carbohydrates it converts inorganic carbon dioxide into organic carbohydrates it is an extremely focused process it is an extremely focused processarrow_forward
- Conditions that favor photorespirationarrow_forwardIn the light dependent reactions of photosynthesis, light energy is converted into chemical energy. True Falsearrow_forwardWhy do the reaction centers have different pigments rather than only the chlorophyls? quantitatively increasing the absorption photons narrowing coverage of the visible spectrum light increasing coverage of the visible spectrum light arranging light-harvesting complexe compensating for the high density of chlorophyllarrow_forward
- A student prepares a cell homogenate from spinach leaves. She performs a cell fractionation experiment to determine the centrifugal force (g-force) that will yield the highest percentage of chloroplasts in the pellet fraction. She splits the spinach homogenate into 5 equal parts and centrifuges the parts for 10 min. at 500xg, 1000xg, 1500xg, 2000xg, or 2500xg. She then determines the proportion of chloroplasts in the supernatant and pellet fractions. The dependent variable in the student's experiment is: O centrifugal force (x g) O time of centrifugation O proportion of chloroplasts in pellet O spinach lcavesarrow_forwardIn cyclic photophosphorylation, NADPH is produced. True Falsearrow_forwardmeans a sudden and dramatic increase in the growth factor for photosynthesis, such as sunlight, carbon dioxide or nutrients.arrow_forward
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Photosynthesis & Respiration | Reactions | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=3XIyweZg6Sw;License: Standard YouTube License, CC-BY