INTRODUCTION: Osmosis is defined as the net movement of water or any other solutions molecules from a region in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially permeable membrane such as a cell wall‚ which lets smaller molecules such as water through but does not allow bigger molecules to pass through. The molecules will continue to diffuse until the area in which the molecules are found reaches a state of equilibrium
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amount of a reddish betacyanin pigment‚ called betanin. This pigment is synthesized in the cytoplasm‚ and then transported across the tonoplast against its concentration gradient where it is accumulated and stored in the vacuole. In healthy cells the pigment remains in the vacuole‚ but some treatments that alter membrane permeability causes the betanin to leak out of the cells. 4.4 Experimental Procedures 4.4.1 Factors Affecting Permeability of Red Beet Root Membranes Cut a
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QUESTIONS AND ANSWERS SECTION A: SIMILARITIES‚ DIFFERENCES‚ AND DEFINITIONS Gametes are mature haploid reproductive cells that unite to form a zygote that develops into a new individual. Gametes are also called sex cells. An egg or ovum is a haploid female reproductive cell or gamete whereas a sperm is a male haploid reproductive cell. A zygote is the initial cell that is formed as a result of the union of a male and a female gamete by means of sexual reproduction. The two haploid cells merge
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Chapter 1/2 Bio Study Guide Section 1.1-Scientific Method Science- An organized way of gathering and analyzing evidence about the natural world Scientific Method 1. Collecting observations 2. Asking questions 3. Forming a hypothesis 4. Experiment 5. Analyze results and draw conclusions 6. Revise hypothesis Control Group- a group in the experiment that receives no experimental treatment Independent Variable- Variable that you change in the experiment X-axis Dependent
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of the cell membrane: The question being answered from doing this experiment is ‘How do different temperatures affect the permeability of the plasma membrane of beetroot?’ Beetroot contains red pigments called betalains‚ located within the cell vacuole. Normally the pigments cannot pass through membranes but they leak out when the beetroot is cooked or placed in alcohol. The aim of this practical is to use beetroot to examine the effect of temperature on cell membranes and relate the effects observed
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A REPORT ON Protein/ Peptide Drug delivery through Oral route Submitted in fulfillment of the Study in Advanced Topic (BITS G513) By S. Lakshmi Anusha (2008HS08605H) BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE‚ PILANI HYDERABAD CAMPUS 29th April‚ 2013. 1 A REPORT ON Protein/ Peptide Drug delivery through Oral route Submitted in fulfillment of the Study in Advanced Topic (BITS G513) By S. Lakshmi Anusha (2008HS08605H) UNDER THE SUPERVISION OF Dr. Punna Rao Ravi Assistant Professor
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Introduction I chose this topic for my experiment‚ because my mother has always been very interested in taking care of flowers and growing them form seeds to adults. We have many different plants in our home and every one of them has different watering and fertilizer instructions‚ which need to be followed in order to make the plant grow and develop as safely as possible. Every plant has unique features and appearance‚ which makes them intriguing. Even the individuals from one specific species can
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extremely cold such as the freezer. Information from research states that the beetroot cell membrane contains a large central vacuole containing a red pigment anthocyanin‚ which gives the beetroot its colour. When the beetroot cell has been disturbed or stressed such as cutting or in the case of this investigation‚ increasing the temperature‚ the beetroot’s inner vacuole
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Paper 1 Chapter 1: Cell structure May/June 03 1 An actively growing cell is supplied with radioactive amino acids. Which cell component would first show an increase in radioactivity? A Golgi body B mitochondrion C nucleus D rough endoplasmic reticulum 2 Which pair of organelles has internal membranes? A chloroplasts and mitochondria B chloroplasts and nuclei C mitochondria and ribosomes D nuclei and ribosomes 3 Which combination is found in a prokaryotic cell? Endoplasmic reticulum DNA RNA Nucleus
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this investigation is an indirect study of the effects of different substances and treatments on living beetroot cells. Beetroot cells have been chosen for this activity because each beetroot cell has a large central vacuole bounded by a membrane (Figure 1). Contained in the vacuole is the red pigment anthocyanin‚ which gives the beetroot its typical colour. The whole beetroot cell is also surrounded by the cell membrane. If the two membranes remain intact the anthocyanin cannot escape into the surrounding
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