Arlen Kong October 11‚ 2010 Chapter 6.1‚ 6.2‚ 6.3 – Online Activities Online Activity 6.2-Membranes Organize a Cell’s Activity Dissect a Plasma Membrane Objective: to understand the structure of a membrane 1. Why is the membrane described as a phospholipid bilayer? It is described as a phospholipid bilayer because there are two layers of phospholipid molecules. 2. How does the arrangement of the phospholipids form a bilayer? The phospholipids arranged in two layers so that the
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Abstract The bromination of trans-cinnamic acid was completed to determine dibromide’s stereochemical structure and its mechanism. After the addition of bromine to trans-cinnamic acid‚ the product was identified by its melting point and infrared spectrum resulting in erythro-2‚3-Dibromo-3-phenylpropanoic acid after comparing similar properties. Introduction In this lab‚ the bromination of trans-cinnamic acid was completed to determine dibromide’s stereochemical structure‚ and from there determine
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It is well known that the negative effects of one’s self-image can be devastating. In the essays “My Inner Shrimp” (Trudeau) and “Dying to Be Bigger” (H.D.) the authors describe what it is that they dislike about themselves and how they dealt with it. Both authors us a similar tone that emphasizes their seemingly self-pitying emotions. Their language often uses strong‚ emotional words that someone would normally use in extreme situations. “I have the soul of a shrimp. I feel the pain of the diminutive
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HYDROXYLATION OF PROGESTERONE BY Bacillus circulans Strain Tex 01-S3c ISOLATED FROM OIL CONTAMINATED SOIL IN OMERGA REGION‚ MAHARASHTRA‚ INDIA S. B. MALI & V.S. HAMDE Dept. of Microbiology‚ Adarsh College‚ Omerga Dist. Osmanabad‚ 413606 malisiromerga@yahoo.com and Dept. of microbiology‚ Yogeshwari College‚ ambajogai‚ Dist. Beed. Maharashtra‚ India Abstract Hydroxylations are possibly the most widespread type of steroid bioconversion. Hydroxylations can be used to buildintermediates
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Ⅰ. QUESTION and OBJECTIVE How would an naked egg‚ a cell of a chicken‚ react to different environment in an extended period of time? How will it impact the egg as the cell membrane tries doing its job? Ⅱ. INTRODUCTION Everything is made up of at least one cell if it is living. Every cell has different parts to it. The part we will be focusing on is the cell membrane. The cell membrane functions as a barrier between the content of a cell and its environment. It is what decides what can go in and
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Celebrities look like the perfect people‚ right? But just how far do they go to look like gods and goddesses we see in professional photos. Even the beauty of individuals relates back to chemistry. Beauty products contain all types of chemicals‚ although‚ is it worth putting them on? Just think of all the harmful chemicals mixed into the products you buy and then applying it to your body. Most surely there is a tradeoff to being beautiful and being healthy. When you are reading the ingredients on
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Phospholipids are made up from many smaller molecules combine these are: fatty acid chains‚ glycerol‚ phosphate and choline. Two of the carbons of the glycerol are joined to two fatty acids in a condensation reaction creating ester bonds. The final carbon is bonded to the phosphate molecule‚ which in turn is connected via a covalent bond to choline. Due to the polar nature of the glycerol phosphate and choline molecules‚ they create a hydrophilic area (known as the hydrophilic head). Whereas‚ the
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BEETROOT PIGMENTS - and membranes – These pigments are betalain pigments (not‚ as often thought‚ anthocyanins)‚ which they replace in some organisms. They are named after the Beet family of plants (Beta) but are also found in fungi (Fly Agaric - the red‚ spotted one!). In petals they presumably attract pollinating insects and may be present in seeds/fruits to encourage birds to eat them and so disperse the seeds. Man has selected for colour in beetroot‚ both because
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10 Brainteasers to Test Your Mental Sharpness To test your mental acuity‚ answer the following questions (no peeking at the answers!): 1. Johnny’s mother had three children. The first child was named April. The second child was named May. What was the third child’s name? 2. A clerk at a butcher shop stands five feet ten inches tall and wears size 13 sneakers. What does he weigh? 3. Before Mt. Everest was discovered‚ what was the highest mountain in the world? 4. How much dirt is there in a hole that
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1. In the plasma membrane‚ the phospholipid heads A) are hydrophobic and face outward towards the aqueous solution on both sides of the membrane B) are hydrophilic and face inward‚ shielded from water C) are hydrophilic and face outward towards the aqueous solution on both sides of the membrane D) are hydrophobic and face inward‚ shielded from water Points Earned: 0.5/0.5 Correct Answer(s): C 2. The function of chloroplasts is A) lipid synthesis. B) intracellular digestion
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