Chapter 5 Workfile/Study Sheet 1.What type of organisms contain biomembranes? All living organisms contain biomembranes. 2.Describe the nature of cellular membranes. Cellular membranes are fluid by nature. 3.What is the major lipid found in membranes? Phospholipids 4.What component of the cell membrane might contribute to maintaining the fluidity of the plasma membranes? Chlosterol 5.Describe globular proteins found in the membrane. They are compacted and folded Amino acids. 6.What
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cyton consists of cell organelles like other cells. Besides‚ it also has neurofibrils‚ neurotubules and Nissls granules or bodies. Neurofibrils take part in transmission of impulse Nissls granules or bodies are irregular masses of rough endoplasmic reticulum on which free ribosomes and polysomes are attached. Nissls granules probably synthesize protein for the cell. b) Cytoplasmic processes or neuritis – They are of two types. 1. Dendrites or dendrons - They contain neurofibrils‚ neutubules
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A bipolar cell is a type of neuron which has two extensions. Bipolar cells are specialized sensory neurons for the transmission of special senses. As such‚ they are part of the sensory pathways for smell‚ sight‚ taste‚ hearing and vestibular functions They are found in the vestibulocochlear nerve‚ but reference to bipolar neurons is usually to cells in the retina. A unipolar cell is a type of neuron in which only one protoplasmic process (neurite) extends from the cell body. Most neurons are multipolar
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is when the LDL receptor gene is not synthesized in the first place due to missense mutations in the coding regions for the protein; class 2 mutations‚ the LDL receptor protein is synthesized but does not reach the Golgi apparatus from the endoplasmic reticulum; class 3 mutations‚ the LDL receptor is not bound properly on the cell surface; class 4 mutations occur when LDL receptors do not bind and cluster in specific areas of the cell surface used for receptor-mediated endocytosis; lastly‚ class 5
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like the picture above‚ they are usually more round in comparison to a plant cell. Lysosomes also destroy any material that enter the cell and remove any cellular organelles that don’t work. Smooth ER and rough ER There are two types of endoplasmic reticulum‚ the rough ER and the smooth ER. They both have similar membranes but are presented in different shapes. The smooth ER look more like rods or tubes and the rough ER looks more like disks or sheets. (5) They are called rough and smooth ER because
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Bio112 Lecture Quiz- 10/9/2010 Answer Key 1. The scientific study of life is called: A. biology B. ecology C. anatomy D. biochemistry E. limnology 2. Human beings are _______________ because they are composed of many cell types. A. unicellular B. acellular C. asymmetrical D. autotrophic E. multicellular 3. A/an _______ is composed of a group of similar cells that perform a particular function. A. organ B. system C. organism D. tissue E. population 4. Choose the CORRECT order (1-5) of increasing
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Table of Contents Contents Page No. Task 01 1.1How Archaea is similar to Eukaryotes and how they differ from Bacteria………..02 1.2: Importance of co-ordination between sub cellular organelles in Eukaryotic cell‚ using protein synthesis and transportation within cells…….…………………04 1.3 Explain the role of different types of transporters in cell membrane……………....07 Task 02 2.1 Explain how in each stage of
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Name_______________________Period___________ Chapter 6: A Tour of the Cell Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells 1. The study of cells has been limited by their small size‚ and so they were not seen and described until 1665‚ when Robert Hooke first looked at dead cells from an oak tree. His contemporary‚ Anton van Leeuwenhoek‚ crafted lenses and with the improvements in optical aids‚ a new world was opened. Magnification and resolving power limit
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Element: Simplest form of matter to have unique chemical properties. Atom: The smallest particles with unique chemical identities. Nucleus: Center of an atom (composed of protons and neutrons). Proton: Have a single positive charge (+1). Neutron: Have no charge. Electron: Tiny particles with a single negative charge and very low mass (-1)/determines chemical bonding properties of an atom. Atomic Number: Number of protons in the nucleus. Atomic Mass: Approximate number of protons and neutrons
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DNA REPLICATION WHAT IS DNA? DNA is a molecule that has a repeating chain of identical five-carbon sugars (polymers) linked together from head to tail. It is composed of four ring shaped organic bases (nucleotides) which are Adenine (A)‚ Guanine (G)‚ Cytosine (C) and Thymine (T). It has a double helix shape and contains the sugar component deoxyribose. THE PROCESS OF DNA REPLICATION How DNA replicates is quite a simple process. First‚ a DNA molecule is "unzipped". In other words‚ it
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