rich in unsaturated fatty acids are more fluid that those rich in saturated fatty acids Membranes must be fluid to work properly; they are usually about as fluid as salad oil. Cholesterol acts as a temp buffer At warm temp(such as 37*C)‚ cholesterol restrains movement of phospholipids At cool temp‚ it maintains fluidity by preventing tight packing (don’t want cholesterol in bloodstream). MEMBRANE PROTEINS determine the membrane’s function Many diff. types of protein in plasma membrane 2
Premium Membrane biology Cell membrane Lipid bilayer
Pg. 287 #1‚3‚4 1. Describe the structure of a nucleotide. A nucleotide is a sugar molecule that has 3 parts including a simple sugar‚ a phosphate group and a nitrogenous base. Nucleotides join together forming long chains‚ with the phosphate group of nucleotide bonding to the deoxyribose sugar of an adjacent nucleotide. 3. Explain why the structure of a DNA molecule is often described as a zipper. The structure of a DNA molecule is often described as a zipper because it is made of tow chains
Premium DNA Gene RNA
ENZYME STRUCTURE AND FUNCTIONS: Enzymes are biological catalysts. They increase the rate of reactions by a factor of between 106 to 1012 times‚ allowing the chemical reactions that make life possible to take place at normal temperatures Definition of enzyme: A protein with catalytic properties due to its power of specific activation is defined as an enzyme. STRUCTURE Enzymes are proteins their function depends on its complexity. The reaction takes place in a small part of the enzyme
Premium Enzyme Chemical reaction Catalysis
the DNA in a plant cell is enclosed within the nucleus. The most important distinctive structure of plant cell is the presence of the cell wall outside the cell membrane. It forms the outer lining of the cell. The cell wall mostly constitutes of cellulose and its main function is providing support and rigidity. Plants cells also contain many membrane bound cellular structures. These organelles carry out specific functions necessary for survival and normal operation of the cells. There are a wide range
Premium Cell Organelle Cell wall
1. Describe the general structure and function of the nervous system. The Nervous System is a "network" which delivers information and monitors the processes taking place in our bodies at all times. The nervous system in all its aspects allows us to function as a single controlled and coordinated unit. The basic nerve cell nerve cell is a neuron; a chain of neurons is actually a "communication cable "inside our bodies. Neuron structure is basically the cell nucleus‚ the dendrites which receive information
Premium Nervous system Neuron Brain
BTEC Health and Social Care Level 2 Unit 7 P2 : Illustrate the structure and function of two major body systems and how they interrelate. ******** The two major body systems: 1. Circulatory system: The circulatory system is composed of: *the heart‚which is an organ made up of cardiac muscle with four chambers(left and right ventricles; left and right atrium or auricle); the heart is a pumping mechanism that services two
Premium Heart Blood Respiratory system
deoxygenated blood from the right atrium via the tricuspid valve to the pulmonary artery through the pulmonary valve and pulmonary trunk. Left atrium: The left atrium carries oxygenated blood from the pulmonary veins to the left ventricle through the mitral valve. Right atrium: The right atrium carries deoxygenated blood from the superior and inferior vena cava and the coronary sinus to the right ventricle through the tricuspid valve. Superior vena cava: The superior vena cava receives deoxygenated
Premium Heart Blood
Global Beauty leader And through this Avon builds a unique portfolio of beauty and related brands striving to surpass their competitions in quality ‚innovation and value and elevating our Image to become the beauty company most women turn to. 2. the women choice for buying Avon has become the destination store for women offering the convenience of multiple brands and channels.women can always choose from. 3. The place to work Avon is known for their leadership edge through their passion for high
Premium Sales Stakeholder Customer service
Phoenix Material Appendix B Structures of the Nervous System This activity will increase your understanding of the different structures of the nervous system and brain. During the Web activity‚ you will view a variety of structures of the brain and nervous system and label each with the appropriate term. You will use this document to write a description for the terms you used in the activity. As you conduct the Structures of the Nervous System activity‚ follow along with this Word document and
Premium Brain Central nervous system Nervous system
the names and locations of its major parts and how they are connected to one another” (Pinel‚ 2011. p. 51). The five major structures that compose the brain are labeled as myelencephalon‚ metencephalon‚ mesencephalon‚ diencephalon‚ and telencephalon. These major structures are what create the adult forebrain‚ midbrain‚ and the hindbrain. First‚ the myelencephalon is also known as the medulla. The myelencephalon carries signals between the brain and the body through tracts that compose the posterior
Premium Brain Neuroanatomy Central nervous system