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Test 2

Fill in the blanks. Movement of materials in and out of cells is controlled by the_________________. The sites of protein synthesis are______________________. Glycerol and fatty acids combine to form___________________. Breakdown of organic nutrients in cells to release energy and form ATP is called_________________. In a__________________reaction, smaller molecules are combined to form a larger molecule. The building units of proteins are____________________. Choose the correct answer. Which of the following are functions of nucleic acids? They pass instructions from parents to offspring. They help make proteins. They contain instructions for proteins. all of the above. Types of lipids include: polysaccharides. amino acids. nucleotides. triglycerides. According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly spread in a continuous layer over the inner and outer surfaces of the membrane. confined to the hydrophobic int...
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Osteoporosis

Osteoporosis is a disease, primarily of the elderly, that results in bones that are very fragile. It is a very serious health issue for older people in our society. 
Osteoporosis occurs when bone resorption exceeds bone deposition. In other words. more of the bone gets broken down for recycling than gets replaced. This results in a loss of bone. Thus, the density of bone decreases over time. This decrease in bone density results is a much higher risk of fractures, particularly fractures of the spine or hip.


Osteoporosis is one disease that is more common in women than in men. Risk factors for osteoporosis include a diet low in calcium, a history of smoking, and a lack of exercise. 

The treatment of osteoporosis includes supplementation with calcium and vitamin D. In addition, patients can be given medications that decrease the activity of osteoclasts, which, in turn, slows re-resorption of bone. An important part of both treatment and prevention of osteoporosis is weight-bearing exercise. Remember putting stress on bones can be a good thing as it stimulates bones to build and become stronger.

Weight-bearing exercise

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