Active and passive transport are the ways in which cells allow things to move into and out of the cell through the cell membrane. They include many different ways to transport things. Passive transport requires no expenditure of energy by the cell. However‚ Active transport requires ATPs which have energy in order for it to move something through the cell membrane. There are different types of transport to suit the sizes of molecules as well. Passive transport includes diffusion‚ osmosis‚ and
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Diffusion and Osmosis NGSSS: SC.912.L.14.2 Relate structure to function for the components of plant and animal cells. Explain the role of cell membranes as a highly selective barrier (passive and active transport). SC.912.L.14.3 Compare and contrast the general structures of plant and animal cells. Compare and contrast the general structures of prokaryotic and eukaryotic cells. AA Background: (Source: www.explorelearning.com) Diffusion is the process in which there is a net movement of
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Introduction to Biology Quiz Question 1 Points: 10 out of 10 Aristotle’s statement “The whole is much greater than the sum of its parts.” Explains which of the following? ****Emergent Properties**** Question 2 Points: 10 out of 10 On the surface of the eye is a transparent‚ flexible covering called the cornea. This structure would best be classified as a... ***tissue*** Question 3 Points: 10 out of 10 Proteins within muscles interact‚ causing the whole muscle to shorten (contract). Which
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INTRODUCTION: This lab was done to know how diffusion takes place. In the first place‚ particular penetrability is characterize as the particular "determination" with reference to what particles to enter the cell or kept outside of the cell; it is basically specific of what is going in and what is going out‚ primarily supplements going in and squanders going out (Marieb). Moreover‚ specific penetrability happens in two ways: dynamic process that requires ATP for the transportation of cell while
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Module 1 ‘Introduction to Molecular Biology’ Learning Objectives (Chapter 6) Molecular Biology‚ DNA‚ chromosomes‚ and the central dogma. Understand Nucleic Acid Structure and properties (including alternate forms of DNA structure and supercoiling‚ and renaturation) Explain the nature of Prokaryotic Chromosome Understand the differences in re-association kinetics of single-copy vs. repeated sequence Understand how DNA re-association provides a measure of genome size in base pairs Functions
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SU_BIO2071_W1_A2_Alimole_. A.doc. Exercise 1: Hanging-drop and wet-mount preparations How does true motility differ from Brownian movement? Brownian movement is the result of molecules of the suspending water bumping into the bacterium. This is an asymmetrical‚ spasmodic movement‚ which gives cells a vibrating look. This does not show proper motility. Correct motility is movement in a specific constant direction that shows winding and spinning. What morphological structure is responsible
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The cell‚ which is the smallest unit of life‚ is surrounded by a plasma membrane. The plasma membrane functions somewhat like a wall‚ as it keeps the internal contents from the external environment. Just like a wall‚ the membrane is also somewhat permeable‚ except that the membrane takes a much more active role in determining what is allowed in to the cell and what is kept out. The plasma membrane is a very thin structure‚ which has some very important tasks. One of the main tasks that it performs
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INTRODUCTION INTO SEEDS AND FLOWERS REVIEW+MORE The cycle of life for a plant starts off as a seed. The seed goes through mitosis and turns into a nature plant‚ which sometimes may produce flowers and fruits. Fruits are where the new seeds can be found‚ continuing the life cycle. A monocot seed with 2 genetic codes (2N) would grow by mitosis. The growth by mitosis would lead to the growth of the apical tips. The meristem cells (stem cells) keep dividing. Then the zone of elongation‚
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AP Biology Introduction and Summary AP Biology is among the most popular advanced placement tests put forth by College Board each year for high school students. The test was designed to challenge and motivate students to further expand on their passion for the subject of biological sciences. AP Biology Course Goals According to College Board‚ the structure for designing a proper AP Biology course should focus on the following topics: • Molecules and Cells: 25% • Heredity and Evolution:
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Biological Membranes Lipid Membranes • Receptors‚ detecting the signals from outside: Light Odorant Taste Chemicals A Hormones Neurotransmitters Drugs • Channels‚ gates and pumps • Electric/chemical potential Neurophysiology Energy • Energy transduction: Photosynthesis Oxidative phosphorylation • • • • • • Structure Function Composition Physicochemical properties Self-assembly Molecular models highly selective permeability barrier Internal membranes for organelles Bilayer Permeability
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