Featured Expert: Cholesterol is a fat-like, waxy
substance that helps your body make cell membranes, many hormones, and vitamin D. The cholesterol in your blood comes from two sources: the foods you eat and your liver. Your liver makes all the cholesterol your body needs. Cholesterol and other fats are carried in your bloodstream as spherical particles called lipoproteins. The two most commonly known lipoproteins are low-density lipoproteins (LDL) and high-density lipoproteins (HDL).
Checking your blood cholesterol levelA cholesterol screening is an overall look at the fats in your blood. Screenings help identify your risk for heart disease. It is important to have what is called a full lipid profile to show the actual levels of each type of fat in your blood: LDL, HDL, triglycerides, and others. Talk with your healthcare provider about when to have this test. What is a healthy blood cholesterol level?For people who have plaque in their arteries or who have other factors that put them at risk for cardiovascular disease, doctors recommend an ideal LDL level well below 70 mg/dl. For those without risk factors who have an LDL level at or above 190 mg/dl, the recommendation is to get this level down to below 100 mg/dl. People age 40 to 75 who are living with diabetes and whose LDL is at 70 or above may need medication. What treatments are available for high cholesterol?Treatment may include:
Cholesterol StatisticsAccording to the American Heart Association (AHA), about 95 million American adults have total blood cholesterol levels of 200mg/dl and higher. Of those, about 28.5 million American adults have a level of 240 or above. High cholesterol levels early in life may play a role in developing atherosclerosis as an adult. What are triglycerides?Triglycerides are another class of fat found in the bloodstream. The bulk of your body's fat tissue is in the form of triglycerides. Triglyceride levels and heart diseaseThe link between triglycerides and heart disease is being studied. But many people with high triglycerides also have other risk factors, like high LDL levels or low HDL levels. What causes elevated triglyceride levels?High triglyceride levels may be caused by health conditions like diabetes, hypothyroidism, kidney disease, or liver disease. Dietary causes of high triglyceride levels may include drinking a lot of alcohol, and eating foods containing cholesterol, saturated fat, and trans fat. The Elements of Life In biology, the elements of life are the essential building blocks that make up living things. They are carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. The first four of these are the most important, as they are used to construct the molecules that are necessary to make up living cells. These elements form the basic building blocks of the major macromolecules of life, including carbohydrates, lipids, nucleic acids and proteins. Carbon is an important element for all living organisms, as it is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Even the cell membranes are made of proteins. Carbon is also used to construct the energy-rich molecules adenosine triphosphate (ATP) and guanosine triphosphate (GTP). Hydrogen is used to construct the molecules water and organic compounds with carbon. Hydrogen is also used to construct ATP and GTP. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins. It is also used to construct ATP and GTP. Oxygen is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. It is also used to construct ATP and GTP. Phosphorus is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Where is the most likely location of cholesterol in an animal cell?Cholesterol reduces permeability of lipid membranes. Cholesterol plays a critical role in the function of the cell membrane which has the highest concentration of cholesterol with around 25-30% of lipid in the cell membrane being cholesterol.
Which cell structure would you most likely find cholesterol?Cholesterol is another type of lipid found within plasma membranes, the other being phospholipids. Cholesterol is found in the interior of the bilayer interacting with the fatty acid tails of the phospholipids.
What is the role of cholesterol in animal cell membranes quizlet?The presence of cholesterol in the membrane restricts the movement of phospholipids and other molecules - this reduces membrane fluidity.
Where is cholesterol located in the cell membrane?More than 90% of cellular cholesterol is located at the plasma membrane. Several microorganisms and bacterial products target lipid rafts, membrane microdomains of eukaryotic cells enriched in cholesterol, sphingolipids, and certain proteins.
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Which of the following describes the most likely location of cholesterol in an animal cell Quizlet
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