Prokaryotic cells are single celled organisms that were formed at the formation of the earth‚ so are the most basic life forms. The prokaryotes are organised in the ‘three domain system’ and include bacteria and blue-green algae. Prokaryotes live in many environments including extreme habitats such as hydrothermal vents‚ hot springs‚ swamps‚ wetlands‚ and the guts of animals. This is a diagram of a prokaryote cell and it shows that they are not very complex cells. They do not contain any membrane
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The Central Nervous System is composed of the brain and the spinal cord and one of it’s primary functions is to send out messsages to the rest of the body. One chronic illness that affects the Central Nervous System is Multiple Sclerosis. Roughly 2 million people througout the world have been faced with this disease‚ and “in the United States‚ it is estimated that 450‚000 people are affected‚ with 10‚000 new cases per year” (Goodman & Fuller 772). This disabiling condition has been found more prevelant
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Introduction: The overall nervous system is made up of the Central Nervous System and the Peripheral Nervous System‚ with the autonomic nervous system being a division of the peripheral nervous system. The autonomic nervous system regulates glands as well as the smooth and cardiac muscle. There are three separate systems within the autonomic nervous system and are called the sympathetic nervous system‚ parasympathetic nervous system and the enteric nervous system. They are responsible for the ‘fight
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Chapter 2 Integrin Structure and Function Manakan Betsy Srichai and Roy Zent Abstract Integrins are a large family of heterodimeric glycoprotein receptors first discovered over twenty years ago. They exist as two noncovalently bound a- and b- subunits that function as adhesion molecules and play key roles in many biological processes including actin cytoskeleton organization and transduction of intracellular signals regulating cellular functions. Integrins bind a variety of extracellular matrices
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(Total: 6 marks) 16.2 Nervous coordination A. Questions 1. (a) motor neurone (1 mark) (1 mark) (b) A – cell body (1 mark) B – axon / nerve fibre (1 mark) C – myelin sheath (1 mark) (c) C is made of fat. (1 mark) It prevents the spread of nerve impulses and helps speed up the rate of transmission of nerve impulses. (1 mark) (d) X is an effector. (1 mark) e.g. muscle / gland (1 mark) (Total: 9 marks) 2. (a) Central nervous system (1 mark) (b) brain (1
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The divisions of the nervous system are the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS is made of two parts the brain and the spinal cord. The PNS is made up the Somatic nervous system and the automatic system. The somatic nervous contains the peripheral nerve fibers that deliver sensory information to the CNS and motor nerve fibers that go to the skeletal muscle. The central nervous system sends messages from the brain to the rest of the body. (Divisions of The
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skincare specialist or at home using simpler steps and tools. A facemask is available in lotion‚ serum or powder form and can also be homemade. HOW A PROFESSIONAL FACIAL CAN IMPROVE YOUR SKIN: A professional facial once every month‚ or even every two months‚ can make a big difference to the way your skin looks and feels. Used as a way to compliment and boost your at-home skincare and treatments‚ a professional facial will deeply cleanse and revitalize your face. And you couldn’t spend a better hour
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Chapter 10 –Nervous System I 1) Define the following word parts. Ax-‚ axle: axon – cylindrical nerve process that carries impulses away from a neuron cell body. Dendr-‚ tree: dendrite – branched nerve process that serves as the receptor surface of a neuron. Funi-‚ cord‚ rope: funilicus – funiculi of spinal cord or bundle of nerve fibers. Gangli-‚ knot: ganglia – deliver information to the body -lemm‚ rind or peel: neurilemma – sheath that surrounds the myelin of a nerve cell process. Mening-
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p53: Structure‚ Function and Therapeutic Applications Ling Bai and Wei-Guo Zhu1 Department of Biochemistry and Molecular Biology‚ Peking University Health Science Center‚ Beijing‚ China [L. Bai‚ W.-G. Zhu]; Department of Biotechnology‚ Guilin Medical College‚ Guilin‚ China [L. Bai] Since the p53 tumor suppressor gene has been found to be mutated in more than 50% of human cancers‚ it has attracted the interest of numerous researchers. The capacity of p53 for multiple biological functions can be
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Lab IX: Nervous System Histology and Spinal Cord Part II: Neurons and nerve struture 1.) There are three types of neurons. The first is the multipolar‚ which is the most common‚ and they are found as motor neurons and interneurons throughout the central nervous system. The second type of neuron is the unipolar neuron‚ which are also called psuedounipolar neurons. They are found as spinal and cranial sensory neurons. The last neuron is the bipolar neuron. They are only found in olfactory‚ visual
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