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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1. (3 pts) Describe the chemical structure of the plant cell wall and plant cell membrane. Make sure to include whether each structure is hydrophobic or hydrophilic. The plant cell wall contains cellulose and the membrane contains phospholipids. Cellulose is hydrophilic‚ meaning that it likes and is attracted to water. The phospholipid bilayer that makes up the cell membrane is both hydrophilic and hydrophobic. It contains hydrophilic heads that face the outside of the bilayer‚ and hydrophobic
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Debunking The Myths About High Cholesterol Or 5 Myths That Prove You Are Thinking All Wrong About High Cholesterol Over the past few years‚ we’ve learned a lot about the harmful effects of high cholesterol and how to keep this at bay. However‚ if you do not follow health news carefully‚ there is a possibility that you might have erroneous information about the risk factors associated with it. There is a great deal of misinformation circling around about high cholesterol. Today‚ people try to avoid
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1. Cellulose‚ starch‚ and glycogen are very similar‚ yet very different. Describe the process by which each of these molecules is formed. Why does the subtle difference in how the simple sugar monomers are bonded in starch and cellulose affect how the two molecules are used? Cellulose is built from glucose molecules bonded covalently together through a process known as hydrolysis. Hydrolysis is a chemical process in which a molecule of water is added to a substance. Each alternating glucose
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The purpose of this experiment was to isolate and purify cholesterol from egg yolks. Two hard boiled egg yolks were twice extracted with diethyl ether and methanol‚ with the filtrate collected via vacuum filtration. Potassium hydroxide pellets were added to the filtrate‚ the ether was distilled off‚ and the mixture was saponified by reflux. The crude cholesterol was isolated through a series of ether extractions and aqueous washes; then the ether was dried with MgSO4 and removed by rotary evaporation
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Mikkelson‚ A. C.‚ Hesse‚ C.‚ & Pauley‚ P. M. (2007). Affectionate writing reduces total cholesterol: Two randomized‚ controlled trials. Human Communication Research‚ 33‚ 119-142. In the article‚ “Affectionate Writing Reduces Total Cholesterol: Two Randomized‚ Controlled Trials‚” the authors set out to show that writing down affectionate thoughts about close family and friends can reduce your total cholesterol levels. They continue by stating that one can find mention of affection in almost all studies
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kills someone in the U.S. Half the deaths in the U.S. population die by heart disease. Get tightness in the throat. Cholesterol is most deadly. Smoking hardens the arteries. High cholesterol equals high blood pressure. In 1971 only family members of the patience being studied were allowed in on the study. Cholesterol is a normal ingredient in the body. There are two types of cholesterol HDL which is good‚ LDL which is bad. Important dates: 1948(this is when the studies started)‚ 1957(anagrams were invented)
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muscular arteries Characteristics: endothelial dysfunction vascular inflammation buildup of lipids‚ cholesterol‚ calcium and cellular debris within the intima of the blood vessel wall. The build up results in atheroma (plaque formation). It is a fatty deposit in the intima of an artery‚ resulting from atherosclerosis. Atheroma/Plaque is made up of: fatty substances Cholesterol Waste products from cells Calcium Fibrin 2. Atherosclerosis develops when the normally smooth
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Hypercholesterolemia is a condition characterized by very high levels of cholesterol in the blood. Cholesterol is a waxy‚ fat-like substance that is produced in the body and obtained from foods that come from animals (particularly egg yolks‚ meat‚ poultry‚ fish‚ and dairy products). The body needs this substance to build cell membranes‚ make certain hormones‚ and produce compounds that aid in fat digestion. Too much cholesterol‚ however‚ increases a person’s risk of developing heart disease. People
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