Photosynthesis by Mary Buckley https://padlet.com/mbuckley7/vximl9ma7qea en-us 2017-11-27 08:43:49 UTC 2025-04-20 16:43:23 UTC hello@padlet.com mbuckley7 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210297973 Adi, Humza, Ishika, Shamsa, Ravleen,]]> 2017-11-27 09:01:32 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210297973 mbuckley7 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298768 Ahaan, Sarah Yasir, sofia, Fares]]> 2017-11-27 09:05:01 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298768 Paiva, Sara Al Solh, Bianca, Tim mbuckley7 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298815 2017-11-27 09:05:16 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298815 Ilyas Alkabour, Neda, Krish, Dara mbuckley7 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298874 2017-11-27 09:05:36 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298874 Ahmad Al Mehairi, Krish Sanklecha,Noah, Kareem mbuckley7 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298912 2017-11-27 09:05:46 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298912 Ahmad Hashim, Nil, Amer, Ilyas mbuckley7 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298946 2017-11-27 09:05:57 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210298946 They use it to react carbon dioxide with water to make a sugar called glucose. The glucose is used in respiration, or converted into starch and stored. Oxygen is produced as a by-product. This process is called photosynthesis. https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317600 2017-11-27 10:12:59 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317600 Light independent https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317886 Whenever we think of photosynthesis, we think of the formula  CO2+H2O------> C6H12O6 with the condition of sunlight. However, sunlight is not always necessary as a condition for photosynthesis. Light independant reactions are reactions that require no sunlight, but instead usually require ATP . These reactions are also known as the calvin cycle or 'dark reactions'. These reactions occur in the fluid filled section of the chloroplasts, also known as 'Stroma'. ]]> 2017-11-27 10:13:53 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317886 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317904 It is a strand of conducting vessels in the stem or leaves of a plant, typically with phloem on the outside and xylem on the inside.]]> 2017-11-27 10:13:58 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317904 limiting factors https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317936 There are three main factors that can limit the rate of photosynthesis: carbon dioxide concentration, temperature and light intensity. ]]> 2017-11-27 10:14:04 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210317936 What is Light Reaction (Light Dependent Reaction) https://padlet.com/mbuckley7/vximl9ma7qea/wish/210318141 There are 2 types of Photosynthesis; Light Dependent Reaction and Light Independent Reaction.Light Dependent reaction or Light reaction is when the plant can only perform photosynthesis wile having sunlight, and in the absence i.e. night, it cannot perform photosynthesis anymore. To perform Light reaction photosynthesis, they need CO2, sunlight, and water. Temperature does not affect the rate of photosynthesis unless till extremities]]> 2017-11-27 10:14:48 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210318141 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319019 2017-11-27 10:17:30 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319019 Temperature https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319203 Although the light dependent reactions of photosynthesis are not affected by changes in temperature, the light independent reactions of photosynthesis are dependent on temperature. When the temperature is too high the enzymes denature and loose their shape. This can affect the rate of photosynthesis. ]]> 2017-11-27 10:18:11 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319203 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319276 Cellulose is important in the human diet since we cannot break cellulose down, it passes through our systems basically unchanged, and it helps the movements of our intestines.]]> 2017-11-27 10:18:29 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319276 1. Chlorophyll must be present in leaf cells, in the chloroplast for photosynthesis to occur. 2. Leaves must be exposed to light for photosynthesis to occur. 3. Plants need carbon dioxide to be able to photosynthesize. It also needs the perfect temperature to photosynthesize at a perfect rate, which is 10-20 degrees celsius or 50 to 60 degrees fahrenheit. Those are the main conditions for photosynthesis. https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319461 2017-11-27 10:19:09 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319461 Plant go through a constant cycle from there growth till there death https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319527 2017-11-27 10:19:23 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319527 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319776 2017-11-27 10:20:14 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319776 light intensity https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319976 light intensity is usually defined as the energy hitting an area over some time period. so in that case if a plant receives to much light intensity the rate of photosynthesis will eventually increase, however if the light intensity is too high the rate of photosynthesis will start declining due to other limiting factors affecting the growth of the plant this could be due to the amount of chlorophyll molecules that are absorbing the light or At a very high intensity of light, the rate of photosynthesis could drop drasically as the light starts to damage the plant. The plant begins to bleach out and will not be able to photosynthesis as the green pigment in the leaf begins to turn into a brown pigment.


]]> 2017-11-27 10:20:55 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210319976 In addition to these three elements, plants need a number of minerals for healthy growth. These are absorbed through the roots as mineral ions dissolved in the soil water. Two important mineral ions needed by plants are: nitrate - for making amino acids, which are needed to make proteins. https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320038 2017-11-27 10:21:06 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320038 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320367 2017-11-27 10:22:02 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320367 Light Dependent Reaction/ Light Reaction Diagram https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320490 2017-11-27 10:22:25 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320490 Xylem and phloem tissues are found in groups called vascular bundles. The position of these bundles varies in different parts of the plant. In a leaf, for example, the phloem is usually found closer to the lower surface. https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320526

]]> 2017-11-27 10:22:34 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320526 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320665 Root

Xylem vessels are tough and strong, so the vascular bundles are in the centre of the root to resist forces that could pull the plant out of the ground.

Stem


The stem has to resist compression (squashing) and bending forces caused by the plant’s weight and the wind. The vascular bundles are arranged near the edge of the stem, with the phloem on the outside and the xylem on the inside.

]]> 2017-11-27 10:23:04 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210320665 One product of photosynthesis is glucose (sugar), which provides the basis for most food chains. The second product of photosynthesis is oxygen which comes in handy if your happen to be an aerobic organism that requires oxygen for survival https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321081 2017-11-27 10:24:22 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321081 Chloroplasts are what makes leaves green, and they are also what takes the carbon dioxide, the water, and the light, and turns them into sugar and oxygen. The sugar is then used by the plants for food, and the oxygen is breathed out into the atmosphere. https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321344 2017-11-27 10:25:07 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321344 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321642 a. Forms taken up by plants
Cu+2 can be absorbed through leaves. Very toxic if too much applied.
b. Functions in plants
- opper is a catalyst in chlorophyll formation
]]> 2017-11-27 10:25:57 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321642 The fate of Oxygen https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321774 Oxygen is the air we breathe without we cannot live. ]]> 2017-11-27 10:26:23 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210321774 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322215 2017-11-27 10:27:41 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322215 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322343 2017-11-27 10:28:07 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322343 Photosynthesis conditions https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322411 2017-11-27 10:28:17 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322411 The raw materials https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322556 The raw materials of photosynthesis, water and carbon dioxide. water through its roots and carbon dioxide moves into the stomata by diffusion.]]> 2017-11-27 10:28:44 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322556 Cellulose is the substance that makes up most of a plant's cell walls. Since it is made by all plants, it is probably the most rich organic compound on Earth. https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322577 2017-11-27 10:28:48 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322577 https://www.hunker.com/13428304/what-is-glucose-used-for-in-a-plant https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322648 2017-11-27 10:29:00 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322648 Nitrogen is used in larger quantities than any other mineral nutrient- most frequently deficient for normal growth of non-legumes. Function in plants- It is part of the amino acids which make up proteins- It is part of the chlorophyll molecule https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322720 2017-11-27 10:29:15 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210322720 Carbon Dioxide concentration https://padlet.com/mbuckley7/vximl9ma7qea/wish/210323098 Carbon dioxide is used to make sugar in the photosynthesis reaction. The concentration of carbon dioxide in the Earth’s atmosphere varies between 0.03% and 0.04%. An increase in the concentration of carbon dioxide gives an increase in the rate of photosynthesis. When the carbon dioxide levels are too high the rate of photosynthesis quickly starts to decrease, this is because the stomata begins to shrink and it will stop the cooling process in the plant. Carbon dioxide is an important factor because it is one of the raw materials needed for photosynthesis along side with water. ]]> 2017-11-27 10:30:23 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210323098 What is ATP and ADP? https://padlet.com/mbuckley7/vximl9ma7qea/wish/210323178  Adenosine triphosphate (or ATP for short),  is a complex organic chemical that participates in many processes. Found in all forms of life, ATP is often referred to as the "molecular unit of currency" of intracellular energy transfer. Think of it like this; ATP is a sort of rechargeable battery for all living organisms, in this case plants also. There are 3 phosphate groups in ATP, that is why it is 'TRI-phosphate'. When the plant requires energy, it removes 1 phosphate group, making it ADP ( 
Adenosine diphosphate). When the phosphate group is removed, there is a burst of energy released from the bond. Take the analogy; a electric wire. When a piece of it is removed, all the electricity (energy), is released. When this occurs, the plant can utilize this energy. However, it is not forever, and the energy stops at a certain point. To gain the energy back, you have to "recharge the battery". This is done by adding back a phosphate group to ADP to make it back into ATP.
]]> 2017-11-27 10:30:40 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210323178 The storage form of glucose in plants is starch https://padlet.com/mbuckley7/vximl9ma7qea/wish/210323305 2017-11-27 10:31:08 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210323305 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324058 Functions in plants
- a part of the protein molecule- necessary for transfer of energy during metabolic processes (ATP)- hastens maturity, promotes good root development, improves drouth and cold tolerance, improves seedling vigor, important in seed and fruit formation.

]]> 2017-11-27 10:33:33 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324058 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324179
Water moves through the xylem vessels in a continuous transpiration stream:

root → stem → leaf
]]> 2017-11-27 10:33:58 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324179 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324249 2017-11-27 10:34:13 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324249 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324498 2017-11-27 10:34:59 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324498 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324577 But in order for these products to be produced sunlight is needed.]]> 2017-11-27 10:35:15 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324577 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324648 carbon dioxide + water |
| glucose + oxygen]]> 2017-11-27 10:35:28 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324648 Light dependent and independent reactions https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324751 In simple terms, light dependent reaction needs light to take place. This reaction takes place in the chloroplasts of the plant cell. The product is ADP and a waste product of oxygen. 

Now for the light independent reaction, it is when there is no need for light directly. But they need ATP (ADP from the light dependent reaction + phosphate) to produce glucose. So plants indirectly need light for the light independent reaction even though light independent is known not to need light for the process to take place.

To sum it up, the process of light dependent and light independent makes glucose.]]> 2017-11-27 10:35:53 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210324751 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210325037 Root hair cells

The root hairs are where most water absorption happens. They are long and thin so they can penetrate between soil particles, and they have a large surface area for absorption of water.

]]> 2017-11-27 10:36:56 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210325037 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210325045 Plants need a number of minerals for healthy growth. These are absorbed through the roots as mineral ions dissolved in the soil water. Plants have two transport systems to move food, water and minerals through their roots, stems and leaves. These systems use continuous tubes called xylem and phloem, and together they are known as vascular bundles.]]> 2017-11-27 10:36:57 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210325045 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210325046 The xylem and phloem transfer nutrients and water to the plant 💦 ]]> 2017-11-27 10:36:58 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210325046 Process of Photosynthesis https://padlet.com/mbuckley7/vximl9ma7qea/wish/210327495 2017-11-27 10:45:44 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210327495 What is photosynthesis? https://padlet.com/mbuckley7/vximl9ma7qea/wish/210327774 photosynthesis is a process by which plants make food. The formula for photosynthesis is ]]> 2017-11-27 10:46:37 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210327774 Video about the limiting factors https://padlet.com/mbuckley7/vximl9ma7qea/wish/210328961 https://www.youtube.com/watch?v=vuA21m0Z2HQ]]> 2017-11-27 10:50:14 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210328961 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210329110 2017-11-27 10:50:40 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210329110 where it comes from https://padlet.com/mbuckley7/vximl9ma7qea/wish/210466082 Plants get there water from rain through their roots. Humans and animals release carbon dioxide and plants release oxygen.]]> 2017-11-27 15:45:07 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210466082 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210482655 2017-11-27 16:08:46 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210482655 Where they get it from https://padlet.com/mbuckley7/vximl9ma7qea/wish/210483202 Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata. A leaf usually has a large surface area, so that it can absorb a lot of light. Its top surface is protected from water loss, disease and weather damage by a waxy layer. Plants get the water they need for photosynthesis through their roots.]]> 2017-11-27 16:09:27 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210483202 https://padlet.com/mbuckley7/vximl9ma7qea/wish/210485147 2017-11-27 16:11:51 UTC https://padlet.com/mbuckley7/vximl9ma7qea/wish/210485147