E. 42 32. A patient in a hospital is suspected of having a heart attack. When hi
ID: 201704 • Letter: E
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E. 42 32. A patient in a hospital is suspected of having a heart attack. When his cells were tested the doctors concluded that the patient is indeed having a heart attack due to lactic acid. What is a logical conclusion? A. The heart cells must have received too much oxygen. B. The heart cells had not received adequate oxygen supply. C. The heart cells had a build up of carbon dioxide, poisoning her cells. D. The lactic acid built up as a result of cellular respiration occurring at too fast of a rate. E. The heart cells had too much carbon dioxide build up. 33. During the hot and dry summer of 2016, the incidents of crabgrass occurred on the lawns of Georgla homeowners. The reason for this is that A. Crabgrass is a type CAM plant so it grows better in dry climates B. As the climate changes, homeowners are not caring for their yards as well. C. Crabgrass is a tropical plant that likes hot, dry climates. D. Crabgrass is a type of C3 plant that does well in dry climates. E. Crabgrass is a type of C4 plant that does well in dry climates. 34. A patient in the hospital is complaining of constant pain. Biochemical analysis reveals that he had a significant concentration of lactate in the skeletal muscle cells. Genetic analysis reveals that the patient had a genetic disorder that reduces the number of mitochondria in muscle cells. What could have the doctors found to come to this conclusion? A. The cells had been going through fermentation to produce energy 8. The muscles required small amounts of sugar to function. C. The muscles require extremely high levels of oxygen to function. D. The muscle cells cannot split glucose into pyruvic acid. E. The cells had died as a result of no mitochondria. 35. Thiamine (vitamin 81) is a water-soluble vitamin and one of the first organic compounds to have been recognized as a vitamin. Dietary sources are essential. Foods rich in thiamine include brewer's yeast, lentils, beans, nuts, oatmeal, flax, sunflower seeds, brown rice, whole grains, whole grain rye, asparagus, kale, cauliflower, potatoes, oranges, liver, and eggs, among others. Thiamine is involved in numerous cellular processes. These affect nerve and muscle function, enzyme reactions, and evern production of hydrochloric acid, necessary for proper digestion. Thiamine is not stored in the body, so depletion can occur quickly, within 14 days. The enzyme that converts pyruvate into acetyl CoA requires thiamine. Severe chronic thiamine deficiency, called beriberi, can cause serious injury to the brain and Signs of deficiency are other nerve tissue, heart and other muscles, and gastrointestinal tract. nonspecific, and may include weight loss, irritability, confusion, and malaise. Thiamine fatal if left untreated. Mild deficiency can b thiamine deficiencies are common because they affect many different populations, including those with diabetes, alcoholism, HIV, advanced age, celiac, bariatric surgeryExplanation / Answer
When there is low oxygen supply to muscles, glucose is converted into lactic acid. When lactic acid gets accumulated in blood, the muscles get fatigue and soreness. In heart where the energy requirement is higher, and when oxygen levels are low, glucose is converted to lactic acid for supplying energy. This is exactly what happened in the patient. As a result the patient had heart attack.
Option b is the answer.
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