water by the seed. This is the part where osmosis takes place. Osmosis is the diffusion of water across a selectively permeable membrane in which the water moves from a high concentration to an area where there are water molecules with a low concentration. Osmosis is similar to diffusion in the way mentioned earlier with the molecules moving from high to low concentration. Another similarity that osmosis shares with diffusion is that both processes work as passive transports. This means that they do
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carbohydrates occurs in the ____ process. b) light independent. 5. Carbon dioxide enters the leaf through b) stomata. 6. The cellular transport process by which carbon dioxide enters a leaf (and by which water vapor and oxygen exit) is ___. d) Diffusion 7. Which of the following creatures would not be an autotroph? c) fish 8. The process by which most of the world’s autotrophs make their food is known as ____. b) Photosynthesis 9. The process of ___ is how ADP + P are converted into ATP during
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cells *Plant cells are square in shape and also contain a much larger vacuole* 1. Cell wall- *Much thicker than plasma membrane 2. Chloroplasts- *Contains a pigment known as chlorophyl Cell Transport I. Objective: Students will be able to understand what the fluid mosaic model is and explain the process of diffusion. II. Standards: 4.1.2c The components of the human body‚ from organ systems to cell organelles‚ interact to maintain a balanced internal environment. To successfully
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Practical 2.1- The Effect of Temperature on Membranes Objective To investigate the effect of temperature on membrane structure Introduction Beetroot Pigments Beetroots contain Betalains which are the red pigments present in the cell vacuole. Betalains are soluble in water and they contain nitrogen. Betalains extracted from beetroot is commonly used as food dye because it is not known to cause any allergic reactions. Beetroot Picture taken from http://tipdeck/how-to-cook-beet-root Structure
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(transport)‚ which happens by diffusion. Inhomogeneous materials can become homogeneous by diffusion‚ if the temperature is high enough. When substances are brought in contact with each other they intermix‚ this property is known as Diffusion. This property of diffusion takes place very rapidly in case of gases and to a lesser extent in case of liquids‚ whereas solids do not show this process of diffusion with each other. But what we can observe in case of solids is that the diffusion of solids in liquids
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would become stained due to its leakage of betalin (the redish-purple pigment). Betalin is found in the vacuole of beetroot cell. The leakage may have been caused by something happening in the cell membrane of the beetroot – concerning the proteins embedded in the phospholipid layer. The study will require the experiment of different temperatures of water and to find out which in temperature causes the most leakage of the pigment and why it does this. Introduction The study can contribute to biology
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beetroot cell surface membranes and how this will affect their permeability. Write down your idea as a hypothesis that you can test‚ and support your idea with biological knowledge. Hypothesis “The greater the concentration of the alcohol the more red pigments (betalains) move into the solution.” Biological knowledge: The exposure of the beetroot cell membrane to alcohol makes it more permeable. If there would be no membrane there would be unrestricted movement of the alcohol and water molecules until
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through the use of a beetroot. I predict that as the temperature of the water increases so will the dispersion of the pigment. Independent Variable: The temperature of water will be increased in increments of 10oC‚ thus the temperatures I will be using are 20oC‚ 30oC‚ 40oC‚ 50oC and 60oC. Dependent Variable: I will be measuring the cell membrane permeability through the amount of pigment dispersion. A colorimeter will be used to quantify results into a percentage transmission of light‚ after it is left
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Biology Honors Final Exam Review Study Guide A. Intro Unit * Characteristics of life (DR.CHARGE) * DNA * Directs protein synthesis * Reproduce * Divides in mitosis (asexual reproduction) * Cells * Homeostasis * The process by which cells maintain constant internal condition (water‚ temperature) * Adaptation (Evolution) * Respond to stimulus * Growth (Development) * Energy * Heterotroph: an organism that cannot synthesize its own food
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simple epithelia. The lowest or bottom layer of cells is attached to the basement membrane for support and connection. Part of the basement membrane is concealed by the epithelia but they are supplied with oxygen and nutrients from deeper tissues by diffusion which is the passage of the molecules from a high concentration to a low concentration. As they are surface tissues and exposed to friction‚ their ability for growth and repair is greater than other tissues and generally occurs during sleep. Simple
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