Overview: Life at the Edge The plasma membrane separates the living cell from its nonliving surroundings. This thin barrier‚ 8 nm thick‚ controls traffic into and out of the cell. Like all biological membranes‚ the plasma membrane is selectively permeable‚ allowing some substances to cross more easily than others. Concept 7.1 Cellular membranes are fluid mosaics of lipids and proteins The main macromolecules in membranes are lipids and proteins‚ but carbohydrates are also important. The
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Chapter 9 Study Guide 1. Explain the difference between aerobic respiration and fermentation. Fermentation is partial degradation of sugars that occurs without oxygen. Aerobic respiration consumes organic molecules and oxygen and yields ATP. 2. Diagram for photosynthesis and respiration 3. What are redox reactions? What is the difference between reduction and oxidation reactions? Redox reactions are chemical reactions that transfer between reactants. In oxidation‚ a substance loses
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Exercise 4 Lab Report (3) Individual: Prepared blood slide (a.) Compare red and white blood cells - what cellular features are present in white cells but not in red blood cells and vice versa? Include a digital image of the blood cells present in the permanent dry. Red Blood cells carry hemoglobin inside of them which helps carry oxygen from the lungs to the rest of the body. Hemoglobin is what gives blood cells the red pigmentation. The amount of blood cells present in the blood give it
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The effect of size on the effectiveness of diffusion Aim: To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL
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Dialysis Experiment: Diffusion of Polar and Non-Polar Substances Introduction It was hypothesized that if the solution is polar‚ then it will diffuse through the dialysis bag. All five solutions of starch‚ albumin‚ sodium sulfate‚ sodium chloride‚ and glucose were placed inside of a dialysis bag‚ which was then placed in a culture dish filled with distilled water. After waiting 60 minutes‚ for the solutions to escape the bag‚ the distilled water was tested for all five solutions through individual
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Abstract: The topic of this research involved the occurrence of genetic transformation in bacteria (E. Coli). More specifically‚ a previously prepared pGLO plasmid--which consisted of the gene to be cloned--was used to transform non-pathogenic bacteria. The pGLO plasmid contained a gene for the Green Fluorescent Protein (GFP) from a bioluminescent jellyfish and a gene for resistance to ampicillin‚ an antibiotic. Essentially‚ we wanted to determine the conditions of the bacteria that would glow.
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Chapter 15 The chromosomal basis of inheritance Key ideas: 1) Mendelian Inheritance has its physical basis in the behavior of chromosomes during sexual life-cycle. 2) Morgan traced a gene to a specific chromosome. 3) Linked genes tend to be inherited together because they are located on the same gene. 4) Independent assortment of chromosomes and crossing over produce genetic recombinants. 5) Geneticists use recombination data to map a chromosome’s genetic locus. 1900 Biology finally
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with kidney disease each year‚ and some individuals face a difficult situation concerning the possibility of doing dialysis‚ and choosing what type of dialysis treatment is right for the individual. Both Hemodialysis and peritoneal dialysis give patients the quality of life. In contrast both procedures are done differently‚ Hemodialysis patients are dependent‚ and peritoneal dialysis patients are self-sufficient. In comparison both removes waste from the bloodstream; however‚ both procedures are beneficial
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Population Genetics of the Alu Insertion on the PV92 region of Chromosome 16 Abstract: PCR is a laboratory method used to amplify a small‚ specifically targeted‚ amount of DNA. It has three steps‚ the denaturing of the template DNA‚ the annealing of the primers to the DNA templates and the extension of the new DNA by Taq DNA polymerase. The Alu insert on the PV92 region of chromosome 16 is targeted and its frequency is measured according to the Hardy-Weinberg equilibrium in the Vanier HTK population
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person on dialysis might face GE 259 Mike Myers Instructor Dr. Loc Homeostasis enables the body’s system to function as expected because of proper temperature regulation. Dialysis is the process by which waste products are removed from the body by artificial ways by diffusion. The process of removal of waste products in a healthy person is facilitated by the kidneys. However‚ those individuals who suffer from kidney failure experience problems with waste removal thus dialysis has
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