portion of their college general requirements. The course will cover basic concepts in the Life Sciences which include biochemistry and molecular biology‚ cell biology‚ histology‚ and anatomy and physiology. Various relevant issues and advances on biomedical sciences (natural history of diseases‚ recombinant DNA technology and genetic engineering‚ stem cell technology‚ etc.) will also be discussed in this course. COURSE GOALS 1. Integrate the Benedictine values and ideals of work‚ study‚ prayer‚ stability
Premium Biology Human anatomy
The Nervous System: Membrane Potential 1. Record the intracellular and extracellular concentrations of the following ions (mM/L): Intracellular Extracellular Sodium (Na+) Potassium (K+) Chloride (Cl–) 2. Excitable cells‚ like neurons‚ are more permeable to ___________ than to ___________. 3. How would the following alterations affect the membrane permeability to K+? Use arrows to indicate the change in permeability. a. An increase in the number of passive K+ channels
Premium Neuron Action potential Nervous system
Diffusion through a Membrane Introduction Molecules are constantly moving. They move in straight lines unless they are deflected by other molecules or obstacles in their environment. Diffusion is the process by which the collisions between molecules cause them to continually spread apart from each other. Their movement can be described as movement from an area of greater concentration to an area of lower concentration. Diffusion continues until the molecules are equally distributed
Premium Glucose Starch Carbohydrate
are extension of epidermal cells Stems in vascular tissue‚ which is made of xylem & phloem. Xylem – transports water & dissolved minerals Long tubes made up of series of cells. From roots upwards to leaves; useable for tree with maximum height. Phloem – transport sucrose‚ produced in photosynthetic tissue to other regions of plant‚ as well as hormones & any other organic material made by plan. Role begins at leaves Transports ‘sap’ to rest of plant Phloem cells linked by sieve plates for
Premium Plant physiology Phloem Xylem
is to determine the stress that various alcohols have on biological membranes. Membranes within cells are composed mainly of lipids and proteins and often serve to help maintain order within a cell by containing cellular materials. Different membranes have a variety of specific functions. One type of membrane-bound vacuole found in plant cells‚ the tonoplast‚ is quite large and usually contains water. In beet plants‚ this membrane-bound vacuole also contains a watersoluble red pigment‚ betacyanin
Premium Protein Bacteria Cell membrane
BIO 330 Exam 1 Lecture 1 * The oldest shell middens from South Africa have been dated in 140‚000 years old * Modern science is based on the application of the scientific method Lecture 2 * In the middle‚ ascending mantle material makes a mid ocean ridge * In areas where two continents are pushing against each other‚ one sinks underneath the other producing subduction zones that create deep trenches * Solid water (ice) displaces more volume than liquid water‚ therefore it floats
Premium Tide Photosynthesis
Physiology 168 March 14‚ 2014 Diffusion across a Selectively Permeable membrane Introduction: Diffusion is movement of molecules from one area of concentration to another. This process is vital for the life functions of cells. Cells have selectively permeable membranes that allow only certain solutions to pass through them. Osmosis is a special kind of diffusion that allows water to go through semi-permeable membranes of high water potential to a region of lower water potential. Water potential
Premium Semipermeable membrane Cellulose Osmosis
anything covered in lecture may appear on the exam. Membrane Transport 1. Describe the cell permeability and membrane transport. What can enter/exit the cell on its own? What requires assistance? Why? 2. Describe membrane potential. What is it? How is it established? How does it influence the transport of charged molecules? What are the components of the electrochemical gradient? 3. What are the different types of membrane transport? Describe each in detail. Which move solutes
Premium Adenosine triphosphate Cellular respiration Photosynthesis
The areas of Michael’s brain that were injured during his birth affected his control over his voluntary movements. Which part of the nervous system distributes motor commands to skeletal muscles? Somatic nervous system The somatic nervous system controls the contractions of skeletal muscles and is under voluntary control. Which principle descending motor pathway provides conscious control over voluntary muscle movements? Corticospinal pathway The corticospinal pathway is also called the pyramidal
Premium Spinal cord Corticospinal tract Nervous system
Beetroot Membranes _Aim_ This practical will test the effect of temperature on the integrity of the membranes‚ _Introduction_ The cells of beetroot contain a pigment called betalain in their vacuoles. It is kept inside the cells by the membranes. If these membranes are damaged‚ then the betalain leaks out. The amount that leaks out can be assessed‚ as the leaked out pigment will color the water surrounding the cells. This information can be used to find out how temperature affects cell membranes
Free Cell membrane Standard deviation Cell wall