plants‚ as rubisco is reduced inefficiently in C3 plants because of higher atmospheric CO2 concentrations. 3.5 PHOTOSYNTHESIS AND THE ENVIRONMENT Section 3.5 Questions (Page 178) Understanding Concepts 1. 2. Irradiance limits the overall rate of photosynthesis under low light conditions. As irradiance increases‚ photosynthesis begins. C4 plants generally exhibit higher rates of photosynthesis when compared with C3 plants because of the fact that although photorespiration rates increase with increasing
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and chlorophyll. This process of plants making their own food with sunlight and chlorophyll is called photosynthesis. The photosynthesis process involves sunlight‚ sugar‚ and chlorophyll. Chlorophyll is called a photoreceptor. It is found in the chloroplasts of a plant cell that is within green plants‚ and is what gives green plants their green color. Chlorophyll has a special role in photosynthesis. Chlorophyll molecules absorb light energy. Chlorophyll is a complex molecule‚ which has lead to a
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Review Questions 1. The organic molecule produced directly by photosynthesis is b) sugar 2. The photosynthetic process removes E) carbon dioxide from the environment. 3. The process of splitting water to release hydrogen and electrons occurs during the _____ process. a) light dependent 4. The process of fixing carbon dioxide into carbohydrates occurs in the ____ process. b) light independent. 5. Carbon dioxide enters the leaf through b) stomata. 6. The cellular transport process by which
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lighting is essential to help a plant grow into maturity. It is also necessary in aiding the plant to get the nutrients it requires to mature into a strong healthy plant. The process of the sun or other light helping to feed the plant is called photosynthesis. The light acts as an energy source to help the plant separate carbohydrates from carbon dioxide. Moisture mixes with this and turns into a glucose and feeds the plant. The plant in turn releases oxygen into the air to make the air we breathe
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given in brackets [ ] at the end of each question or part question. 9700/51 October/November 2011 1 hour 15 minutes For Examiner’s Use 1 2 Total This document consists of 8 printed pages. DC (CB (SE/DJ)) 34786/4 © UCLES 2011 [Turn over 2 1 Photosynthesis was investigated in a species of unicellular alga using the apparatus shown in Fig. 1.1. suspension of unicellular algae in water For Examiner’s Use 10.0 light of known wavelength oxygen probe magnetic stirrer Fig. 1.1 Two different strains of
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Discussion: Shown in tables 1 and 2‚ the shoot heights‚ on average‚ of the barley seeds‚ increased as the Aquasol concentration increased. This is with the exception of the solution with an initial Aquasol concentration of 0.40% in Table 1‚ which showed to have‚ on average‚ shorter shoot heights in comparison to the solution with 0.25% Aquasol. Ultimately‚ this indicates that the experiment had random and systematic errors that affected the accuracy‚ reliability‚ validity‚ and precision of the results
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Unit 2. Chapters 9-16. Cell Processes 1. Cellular Respiration‚ Photosynthesis‚ Cell Cycle‚ Mitosis‚ Meiosis‚ & Genetics. Note A: All work must be hand-written‚ including charts & diagrams. Note B: each answer requires more than one sentence & use diagrams whenever possible; failure to use diagrams will result in less points. Chapter 9 Outline 1) Principles of Energy Conservation a) Cellular respiration and fermentation are catabolic(energy – yielding) pathways b) Cells must recycle the ATP
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➢ Competing – Two species compete with another species for resources such as food‚ water‚ or territory ➢ Biomes – major types of ecosystems that occupy very broad geographic regions. ➢ Photic zone is where there is enough light for photosynthesis to occur and an aphotic zone‚ where very little light penetrates. ➢ Benthic zone - is located at the bottom of the biome ➢ Oligotrophic lakes are deep lakes that are nutrient-poor and oxygen-rich and contain sparse phytoplankton.
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of each of the three tissue systems in a leaf. 4. Describe at least three specializations in plant organs and plant cells that are adaptations to life on land. 5. If humans were photoautotrophs‚ making food by capturing light energy for photosynthesis‚ how might our anatomy be different? 6. Distinguish between primary and secondary growth. 7. Cells in lower layers of your skin divide and replace dead cells sloughed from the surface. Why is it inaccurate to compare such regions of cell
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• 1. The organic molecule produced directly by photosynthesis is sugar: a) lipids; b) sugar; c) amino acids; d) DNA • 2. The photosynthetic process removes carbon dioxide from the environment. a) water; b) sugar; c) oxygen; d) chlorophyll; e) carbon dioxide • 3. The process of splitting water to release hydrogens and electrons occurs during the light dependent process. a) light dependent; b) light independent; c) carbon fixation; d) carbon photophosphorylation; e) glycolysis • 4. The process
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