Biology Experiment 2 : Transport Across Membrane Name : Umi Adiba Anis Binti Che Hamid Matrix Number : CPM0147_2013B Batch : Pre-Med May Intake 2013 Group : E Date : 19.06.2013 Lecturer’s Name : Miss Nurul Izziani Objectives : I. To study the effects of hypotonic‚ hypertonic‚ and isotonic solutions on plant and animal cells. Experiment 1 : Introduction : The purpose of doing this experiment is to investigate the effects of hypotonic‚ hypertonic‚ and isotonic solutions on plant
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Histology Review Supplement The slides in this section are designed to provide a basic histology review related to topics introduced in the PhysioEx lab simulations and in your anatomy and physiology textbook. From the PhysioEx main menu‚ select Histology Tutorial. The opening screen should appear after a few seconds. The Sort by menu is located at the top left. Click on the white drop-down menu and select “Histology Review” from the list. You will note that the slides in the histology module are
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hardness of Specimen B is A.< 2.5 B. 2.5–3.5 C.3.5–4.5 D.4.5–5.5 Correct E. > 5.5 Answer Key: E Question 4 of 34 3.0/ 3.0 Points Specimen B is A.fluorite. B.calcite. Correct C.quartz. D.feldspar. Answer Key: C Question 5 of 34 3.0/ 3.0 Points Specimen C has Correct A.cleavage in one plane. B.cleavage in two planes at 90º angles. C.cleave in three planes not at 90º angles. D.cleavage in three planes at 90º angles. Answer Key: A Question 6 of 34 3.0/
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Effects of Tonicity on Cell Membrane Abstract The purpose of this experiment was to determine the effects of tonicity on a cell membrane using red blood cells‚ potato strips and three unknown solutions (A‚ B‚ C). First three slides were prepared containing RBC’s and unknown solutions A‚ B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The
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interphase and never enter the mitotic phase. (Lab Manual 64) Interphase is the synthesis of biological molecules including DNA and duplicated DNA with associated proteins. These comprise the chromatin that begin to condense toward the end of this phase‚ but are not yet visible. The nucleoplasm has a uniform grainy appearance. Prophase is when the chromatin condenses into the more distinct elongate strands early in prophase. Also nucleoli and the nuclear membrane begin to disappear. The mitotic spindles
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Exercise for Histology (for digestive gland) I. Multichosen questions: 1. The B cells in islet of Langerhans secrete ( B ). A. glucagon B. insulin C. serotonin D. pepsin E. trypsin 2. The perisinusoidal space ( space of Disse ) in hepatic lobule is located between ( C ). A. two adjacent hepatocytes B. hepatic macrophage and endothelium of hepatic sinusoid C. hepatocyte and endothelium of hepatic sinusoid D. hepatic plate and hepatic plate E
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1a. Aquaporins are membrane proteins that have fourteen various structures however the most common form is that of a homotetramer. The homotetramer is often found in the membrane and composed of four aquaporin membranes. The structural arrangement creates a fifth channel in the middle that allows for gas transportation. 1b. The direction of H2O molecular flow through a channel is determined by an osmotic gradient. 1c. One of the mechanisms that prevents proton channeling is due to the (ar/R) and
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Plasma membranes are selectively permeable. The purpose of this experiment is to reveal how a form of diffusion in a semipermeable membrane works by creating a real life simulation of a semipermeable plasma membrane. This is done by building an imitation of a caterpillar’s digestive tract using dialysis tubing and glassware. The first material in this experiment is a small beaker representing the head and crop of the caterpillar. This beaker is filled with both starch and the enzyme α-amylase. This
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Results & Observations: In the hypotonic solution the water will move from the solution to the onion cells which will become bigger. PART 2 Procedure: 1. The distilled water is removed using the filter paper; 2. A drop of 5% of sucrose solution is placed at a side of the cover slip and the solution across the epidermal layer is drawn by placing filter paper on the other side of the cover slip; 3. The onion cells are examined once again through microscope. The structure
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Notes on histology Histology Lecture 1 Histology is the study of tissues: in our case‚ it means study of tissues which make up the human body. Tissue is defined as a group of cells which perform a common function. All the cells in a given tissue are not necessarily identical or similar e.g. blood is a type of connective tissue but it has many different types of cells. However‚ tissue also contains two other components i.e. ground substance (or matrix) and fibres. Despite the complexity of
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