Free ACT Test Exam Braindumps (page: 84)

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NATURAL SCIENCE: Diabetes

(1) There are two types of diabetes, insulin-dependent and non-insulin-dependent. Between 90 and 95 percent of the estimated 13 to 14 million people in the United States with diabetes have non-insulin-dependent, or Type II, diabetes. Because this form of diabetes usually begins in adults over the age of 40 and is most common after the age of 55, it used to be called adult-onset diabetes. Its symptoms often develop gradually and are hard to identify at first; therefore, nearly half of all people with diabetes do not know they have it. Someone who has developed Type II diabetes may feel tired or ill without knowing why, a circumstance which can be particularly dangerous because untreated diabetes can cause damage to the heart, blood vessels, eyes, kidneys, and nerves. While the causes, short-term effects, and treatments of the two types of diabetes differ, both types can cause the same long-term health problems.

(2) Most importantly, both types of diabetes affect the body's ability to use digested food for energy. Diabetes does not interfere with digestion, but it does prevent the body from using an important product of digestion, glucose (commonly known as sugar), for energy. After a meal, the normal digestive system extracts glucose from some foods. The blood carries the glucose or sugar throughout the body, causing blood glucose levels to rise. In response to this rise, the hormone insulin is released into the bloodstream and signals the body tissues to metabolize or burn the glucose for fuel, which causes blood glucose levels to return to normal. The glucose that the body does not use right away is stored in the liver, muscle, or fat.

(3) In both types of diabetes, this normal process malfunctions. A gland called the pancreas, found just behind the stomach, makes insulin. In patients with insulin-dependent diabetes, the pancreas does not produce insulin at all. This condition usually begins in childhood and is known as Type I (formerly called juvenile-onset) diabetes. These patients must have daily insulin injections to survive. People with non-insulin-dependent diabetes usually produce some insulin in their pancreas, but the body's tissues do not respond very well to the insulin signal and therefore do not metabolize the glucose properly ­ a condition known as insulin resistance.

(4) Insulin resistance is an important factor in non-insulin-dependent diabetes, and scientists are researching the causes of insulin resistance. They have identified two possibilities. The first is that there could be a defect in the insulin receptors on cells. Like an appliance that needs to be plugged into an electrical outlet, insulin has to bind to a receptor in order to function. Several things can go wrong with receptors. For example, there may not be enough receptors for insulin to bind to, or a defect in the receptors may prevent insulin from binding. The second possible cause of insulin resistance is that, although insulin may bind to the receptors, the cells may not read the signal to metabolize the glucose. Scientists continue to study these cells to see why this might happen.

(5) There is no cure for diabetes yet. However, there are ways to alleviate its symptoms. In 1986, a National Institutes of Health panel of experts recommended that the best treatment for noninsulin dependent diabetes is a diet that helps one maintain a normal weight and pays particular attention to a proper balance of the different food groups. Many experts, including those in the American Diabetes Association, recommend that 50 to 60 percent of daily calories come from carbohydrates, 12 to 20 percent from protein, and no more than 30 percent from fat. Foods that are rich in carbohydrates, such as breads, cereals, fruits, and vegetables, break down into glucose during digestion, causing blood glucose to rise. Additionally, studies have shown that cooked foods raise blood glucose higher than raw, unpeeled foods. A doctor or nutritionist should always be consulted for more information and for help in planning a diet to offset the effects of this form of diabetes.

Which of the following statements best summarizes the main idea of the passage?

  1. Type I and Type II diabetes are best treated by maintaining a high-protein diet.
  2. Type II diabetes is a distinct condition that can be managed by maintaining a healthy diet.
  3. Type I diabetes is an insidious condition most harmful when the patient is not taking daily insulin injections.
  4. Adults who suspect they may have Type II diabetes should immediately adopt a high-carbohydrate diet.

Answer(s): B

Explanation:

From statements made in the last paragraph, we know that choices A and D are factually incorrect. Choice C may be a true statement, but it is not the main idea of the passage because a majority of the passage is about Type II diabetes, and not about the consequences of not taking insulin shots.



NATURAL SCIENCE: Diabetes

(1) There are two types of diabetes, insulin-dependent and non-insulin-dependent. Between 90 and 95 percent of the estimated 13 to 14 million people in the United States with diabetes have non-insulin-dependent, or Type II, diabetes. Because this form of diabetes usually begins in adults over the age of 40 and is most common after the age of 55, it used to be called adult-onset diabetes. Its symptoms often develop gradually and are hard to identify at first; therefore, nearly half of all people with diabetes do not know they have it. Someone who has developed Type II diabetes may feel tired or ill without knowing why, a circumstance which can be particularly dangerous because untreated diabetes can cause damage to the heart, blood vessels, eyes, kidneys, and nerves. While the causes, short-term effects, and treatments of the two types of diabetes differ, both types can cause the same long-term health problems.

(2) Most importantly, both types of diabetes affect the body's ability to use digested food for energy. Diabetes does not interfere with digestion, but it does prevent the body from using an important product of digestion, glucose (commonly known as sugar), for energy. After a meal, the normal digestive system extracts glucose from some foods. The blood carries the glucose or sugar throughout the body, causing blood glucose levels to rise. In response to this rise, the hormone insulin is released into the bloodstream and signals the body tissues to metabolize or burn the glucose for fuel, which causes blood glucose levels to return to normal. The glucose that the body does not use right away is stored in the liver, muscle, or fat.

(3) In both types of diabetes, this normal process malfunctions. A gland called the pancreas, found just behind the stomach, makes insulin. In patients with insulin-dependent diabetes, the pancreas does not produce insulin at all. This condition usually begins in childhood and is known as Type I (formerly called juvenile-onset) diabetes. These patients must have daily insulin injections to survive. People with non-insulin-dependent diabetes usually produce some insulin in their pancreas, but the body's tissues do not respond very well to the insulin signal and therefore do not metabolize the glucose properly ­ a condition known as insulin resistance.

(4) Insulin resistance is an important factor in non-insulin-dependent diabetes, and scientists are researching the causes of insulin resistance. They have identified two possibilities. The first is that there could be a defect in the insulin receptors on cells. Like an appliance that needs to be plugged into an electrical outlet, insulin has to bind to a receptor in order to function. Several things can go wrong with receptors. For example, there may not be enough receptors for insulin to bind to, or a defect in the receptors may prevent insulin from binding. The second possible cause of insulin resistance is that, although insulin may bind to the receptors, the cells may not read the signal to metabolize the glucose. Scientists continue to study these cells to see why this might happen.

(5) There is no cure for diabetes yet. However, there are ways to alleviate its symptoms. In 1986, a National Institutes of Health panel of experts recommended that the best treatment for noninsulin dependent diabetes is a diet that helps one maintain a normal weight and pays particular attention to a proper balance of the different food groups. Many experts, including those in the American Diabetes Association, recommend that 50 to 60 percent of daily calories come from carbohydrates, 12 to 20 percent from protein, and no more than 30 percent from fat. Foods that are rich in carbohydrates, such as breads, cereals, fruits, and vegetables, break down into glucose during digestion, causing blood glucose to rise. Additionally, studies have shown that cooked foods raise blood glucose higher than raw, unpeeled foods. A doctor or nutritionist should always be consulted for more information and for help in planning a diet to offset the effects of this form of diabetes.

Which of the following is mentioned in the passage as a possible problem with insulin receptors in insulin- resistant individuals?

  1. Overeating causes the receptors not to function properly.
  2. There may be an overabundance of receptors.
  3. A defect causes the receptors to bind with glucose.
  4. A defect hinders the receptors from binding with insulin.

Answer(s): D

Explanation:

The answer to this detail question can be found in the sentence: "a defect in the receptors may prevent insulin from binding."



NATURAL SCIENCE: Diabetes

(1) There are two types of diabetes, insulin-dependent and non-insulin-dependent. Between 90 and 95 percent of the estimated 13 to 14 million people in the United States with diabetes have non-insulin-dependent, or Type II, diabetes. Because this form of diabetes usually begins in adults over the age of 40 and is most common after the age of 55, it used to be called adult-onset diabetes. Its symptoms often develop gradually and are hard to identify at first; therefore, nearly half of all people with diabetes do not know they have it. Someone who has developed Type II diabetes may feel tired or ill without knowing why, a circumstance which can be particularly dangerous because untreated diabetes can cause damage to the heart, blood vessels, eyes, kidneys, and nerves. While the causes, short-term effects, and treatments of the two types of diabetes differ, both types can cause the same long-term health problems.

(2) Most importantly, both types of diabetes affect the body's ability to use digested food for energy. Diabetes does not interfere with digestion, but it does prevent the body from using an important product of digestion, glucose (commonly known as sugar), for energy. After a meal, the normal digestive system extracts glucose from some foods. The blood carries the glucose or sugar throughout the body, causing blood glucose levels to rise. In response to this rise, the hormone insulin is released into the bloodstream and signals the body tissues to metabolize or burn the glucose for fuel, which causes blood glucose levels to return to normal. The glucose that the body does not use right away is stored in the liver, muscle, or fat.

(3) In both types of diabetes, this normal process malfunctions. A gland called the pancreas, found just behind the stomach, makes insulin. In patients with insulin-dependent diabetes, the pancreas does not produce insulin at all. This condition usually begins in childhood and is known as Type I (formerly called juvenile-onset) diabetes. These patients must have daily insulin injections to survive. People with non-insulin-dependent diabetes usually produce some insulin in their pancreas, but the body's tissues do not respond very well to the insulin signal and therefore do not metabolize the glucose properly ­ a condition known as insulin resistance.

(4) Insulin resistance is an important factor in non-insulin-dependent diabetes, and scientists are researching the causes of insulin resistance. They have identified two possibilities. The first is that there could be a defect in the insulin receptors on cells. Like an appliance that needs to be plugged into an electrical outlet, insulin has to bind to a receptor in order to function. Several things can go wrong with receptors. For example, there may not be enough receptors for insulin to bind to, or a defect in the receptors may prevent insulin from binding. The second possible cause of insulin resistance is that, although insulin may bind to the receptors, the cells may not read the signal to metabolize the glucose. Scientists continue to study these cells to see why this might happen.

(5) There is no cure for diabetes yet. However, there are ways to alleviate its symptoms. In 1986, a National Institutes of Health panel of experts recommended that the best treatment for noninsulin dependent diabetes is a diet that helps one maintain a normal weight and pays particular attention to a proper balance of the different food groups. Many experts, including those in the American Diabetes Association, recommend that 50 to 60 percent of daily calories come from carbohydrates, 12 to 20 percent from protein, and no more than 30 percent from fat. Foods that are rich in carbohydrates, such as breads, cereals, fruits, and vegetables, break down into glucose during digestion, causing blood glucose to rise. Additionally, studies have shown that cooked foods raise blood glucose higher than raw, unpeeled foods. A doctor or nutritionist should always be consulted for more information and for help in planning a diet to offset the effects of this form of diabetes.

According to the passage, in normal individuals who of the following processes occur immediately after the digestive system converts some food into glucose?

  1. The glucose is metabolized by body tissues.
  2. Insulin is released into the bloodstream.
  3. Blood sugar levels rise.
  4. The pancreas manufactures increased amounts of insulin.

Answer(s): A

Explanation:

Cause and effect questions do not necessarily have to use the words cause or effect, which you can see is true in this question. It is basically asking what the immediate effects of glucose are on the body. The answer can be found in the sentence: "the normal digestive system extracts glucose from some foods. The blood carries the glucose or sugar throughout the body, causing blood glucose levels to rise," or simply put, blood sugar levels rise.



NATURAL SCIENCE: Diabetes

(1) There are two types of diabetes, insulin-dependent and non-insulin-dependent. Between 90 and 95 percent of the estimated 13 to 14 million people in the United States with diabetes have non-insulin-dependent, or Type II, diabetes. Because this form of diabetes usually begins in adults over the age of 40 and is most common after the age of 55, it used to be called adult-onset diabetes. Its symptoms often develop gradually and are hard to identify at first; therefore, nearly half of all people with diabetes do not know they have it. Someone who has developed Type II diabetes may feel tired or ill without knowing why, a circumstance which can be particularly dangerous because untreated diabetes can cause damage to the heart, blood vessels, eyes, kidneys, and nerves. While the causes, short-term effects, and treatments of the two types of diabetes differ, both types can cause the same long-term health problems.

(2) Most importantly, both types of diabetes affect the body's ability to use digested food for energy. Diabetes does not interfere with digestion, but it does prevent the body from using an important product of digestion, glucose (commonly known as sugar), for energy. After a meal, the normal digestive system extracts glucose from some foods. The blood carries the glucose or sugar throughout the body, causing blood glucose levels to rise. In response to this rise, the hormone insulin is released into the bloodstream and signals the body tissues to metabolize or burn the glucose for fuel, which causes blood glucose levels to return to normal. The glucose that the body does not use right away is stored in the liver, muscle, or fat.

(3) In both types of diabetes, this normal process malfunctions. A gland called the pancreas, found just behind the stomach, makes insulin. In patients with insulin-dependent diabetes, the pancreas does not produce insulin at all. This condition usually begins in childhood and is known as Type I (formerly called juvenile-onset) diabetes. These patients must have daily insulin injections to survive. People with non-insulin-dependent diabetes usually produce some insulin in their pancreas, but the body's tissues do not respond very well to the insulin signal and therefore do not metabolize the glucose properly ­ a condition known as insulin resistance.

(4) Insulin resistance is an important factor in non-insulin-dependent diabetes, and scientists are researching the causes of insulin resistance. They have identified two possibilities. The first is that there could be a defect in the insulin receptors on cells. Like an appliance that needs to be plugged into an electrical outlet, insulin has to bind to a receptor in order to function. Several things can go wrong with receptors. For example, there may not be enough receptors for insulin to bind to, or a defect in the receptors may prevent insulin from binding. The second possible cause of insulin resistance is that, although insulin may bind to the receptors, the cells may not read the signal to metabolize the glucose. Scientists continue to study these cells to see why this might happen.

(5) There is no cure for diabetes yet. However, there are ways to alleviate its symptoms. In 1986, a National Institutes of Health panel of experts recommended that the best treatment for noninsulin dependent diabetes is a diet that helps one maintain a normal weight and pays particular attention to a proper balance of the different food groups. Many experts, including those in the American Diabetes Association, recommend that 50 to 60 percent of daily calories come from carbohydrates, 12 to 20 percent from protein, and no more than 30 percent from fat. Foods that are rich in carbohydrates, such as breads, cereals, fruits, and vegetables, break down into glucose during digestion, causing blood glucose to rise. Additionally, studies have shown that cooked foods raise blood glucose higher than raw, unpeeled foods. A doctor or nutritionist should always be consulted for more information and for help in planning a diet to offset the effects of this form of diabetes.

Based on the information in the passage, which of the following best describes people with Type I diabetes?

  1. They do not need to be treated with injections of insulin.
  2. It does not interfere with digestion.
  3. Their pancreases do not produce insulin.
  4. They are usually diagnosed as adults.

Answer(s): C

Explanation:

This question is asking you to sort through the information given about Type I diabetes and decide on the most concise way of describing them. We know that choices A and D are factually incorrect, so they can be eliminated as possible answers. Choice B is a true statement, but because it refers to both types of diabetes and is not the most important aspect of the disease, it too can be eliminated. Therefore, the best answer is choice C.



Page 84 of 260



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