1.
The process in which foods you eat are broken down and absorbed is called
Correct Answer
B. Digestion
Explanation
Digestion is the correct answer because it refers to the process in which the foods we eat are broken down and absorbed by our body. During digestion, the food is broken down into smaller molecules by mechanical and chemical processes in the mouth, stomach, and small intestine. These smaller molecules are then absorbed into the bloodstream and used by the body for energy, growth, and repair. Metabolism and respiration are related processes but do not specifically encompass the breakdown and absorption of food.
2.
Which of the folllowing essential nutrients does NOT supply energy?
Correct Answer
A. Vitamins
Explanation
Vitamins do not supply energy because they are not directly used as a source of fuel for the body. While they play a crucial role in various bodily functions and metabolism, they do not provide calories or energy in the same way that fats and carbohydrates do. Instead, vitamins act as coenzymes or cofactors, assisting enzymes in carrying out important chemical reactions in the body.
3.
The building blocks of proteins are called
Correct Answer
C. Amino acids
Explanation
Proteins are composed of long chains of amino acids. These amino acids are the building blocks of proteins and are essential for the structure and function of the body. Enzymes are a type of protein, but not all proteins are enzymes. Minerals, on the other hand, are inorganic substances that are required in small amounts for the proper functioning of the body, but they are not the building blocks of proteins. Therefore, the correct answer is amino acids.
4.
Protein sources that provide all the amino acids that cannot be manufactured in the body are best desrcibed as
Correct Answer
C. Complete
Explanation
Protein sources that provide all the amino acids that cannot be manufactured in the body are best described as "complete." This means that these protein sources contain all nine essential amino acids that the body needs but cannot produce on its own. Examples of complete protein sources include animal-based foods such as meat, fish, eggs, and dairy products. Consuming complete proteins is important for maintaining optimal health and supporting various bodily functions.
5.
Which of the following is NOT a function of fats?
Correct Answer
A. They form important components of blood and some hormones
Explanation
Fats do not form important components of blood and some hormones. While fats play important roles in the body, such as providing energy, aiding in the absorption of fat-soluble vitamins, and acting as a protective cushion for organs, they do not directly form components of blood or hormones. Blood is primarily composed of cells, plasma, and proteins, while hormones are made up of amino acids or cholesterol derivatives.
6.
The major source of fuel for the body during rest and light activity is
Correct Answer
C. Fats
Explanation
During rest and light activity, the body relies primarily on fats as a source of fuel. Fats are a concentrated source of energy and can be broken down and utilized by the body for energy production. They provide a longer-lasting and sustained energy release compared to other macronutrients such as proteins or carbohydrates. Additionally, fats play a crucial role in supporting various bodily functions, including hormone production and nutrient absorption. Therefore, fats are the major source of fuel for the body during periods of rest and light activity.
7.
The essential fatty acids,linoleic and alpha-linoleic acids,are both
Correct Answer
A. Polyunsaturated
Explanation
Polyunsaturated fatty acids are those that contain more than one double bond in their carbon chain. Linoleic acid and alpha-linolenic acid are both essential fatty acids that fall under this category. They are important for the body as they cannot be synthesized and must be obtained through the diet. These fatty acids play a crucial role in maintaining healthy cell membranes, supporting brain function, and reducing inflammation. Therefore, the correct answer is polyunsaturated.
8.
Leading sources of saturated fat in the american diet include all of the following,EXCEPT
Correct Answer
B. Poultry
Explanation
The given answer is "poultry." Poultry, such as chicken and turkey, is not considered a leading source of saturated fat in the American diet. Red meats, whole milk, and cheese are known to be significant sources of saturated fat. However, poultry is generally lower in saturated fat compared to red meats and dairy products.
9.
A by-product of hydrogenation is
Correct Answer
A. Trans fatty acids
Explanation
Hydrogenation is a chemical process that involves adding hydrogen to unsaturated fats to make them more solid and stable. Trans fatty acids are formed as a by-product of this process. These fats have been linked to various health problems, including an increased risk of heart disease. Triglycerides, on the other hand, are a type of fat found in the bloodstream and adipose tissue that serve as a source of energy. Cholesterol is a waxy substance found in the body that is necessary for the production of hormones, vitamin D, and bile acids. Therefore, the correct answer is trans fatty acids, as they are specifically formed during hydrogenation.
10.
Human body weight is composed of approximately_____ water.
Correct Answer
A. 50-60
Explanation
The human body weight is composed of approximately 50-60% water. Water is essential for various bodily functions such as regulating body temperature, transporting nutrients and oxygen, lubricating joints, and removing waste products. It is present in cells, blood, and other bodily fluids, making up a significant portion of our overall weight. Maintaining proper hydration is crucial for overall health and well-being.
11.
The body's abitlity to respond or adapt to the demands and stress of physical effort is
Correct Answer
C. pHysical fitness
Explanation
Physical fitness refers to the body's ability to respond and adapt to the demands and stress of physical effort. It encompasses various components such as cardiovascular endurance, muscular strength, flexibility, and body composition. Physical fitness is crucial for performing physical activities efficiently and effectively. It helps improve overall health, reduces the risk of chronic diseases, enhances mental well-being, and promotes longevity. Regular physical activity is a key factor in achieving and maintaining physical fitness.
12.
The abilty of the body to perform prolonged ,large muscle dynamic excercise at moderate-to -high levels of intensity is
Correct Answer
A. Cardiorespiratory endurance
Explanation
The correct answer is cardiorespiratory endurance. Cardiorespiratory endurance refers to the ability of the body to sustain prolonged, large muscle dynamic exercise at moderate to high levels of intensity. This involves the efficient functioning of the cardiovascular and respiratory systems to deliver oxygen to the muscles and remove waste products. It is an important component of overall fitness and can be improved through regular aerobic exercise such as running, swimming, or cycling. Anaerobic capacity, adaptive capacity, and cardiorespiratory capacity are not the appropriate terms to describe this specific ability.
13.
Flexibility is best described a
Correct Answer
B. The ability to move joints through their full range o motion
Explanation
Flexibility is best described as the ability to move joints through their full range of motion. This means that a person with good flexibility can easily and comfortably move their joints to their maximum extent without any pain or discomfort. Flexibility is important for maintaining proper posture, preventing injuries, and improving overall physical performance.
14.
Exercise tends to result in all of the following EXCEPT
Correct Answer
A. Decreased insulin sensitivity
Explanation
Exercise has been shown to have numerous benefits for overall health and well-being. It can lead to improved self-image by promoting weight loss, muscle toning, and increased confidence. Additionally, exercise has been linked to improved memory and cognitive function through increased blood flow and the release of certain chemicals in the brain. However, exercise actually improves insulin sensitivity, meaning that it helps the body use insulin more effectively and can lower the risk of developing conditions like type 2 diabetes. Therefore, the correct answer is decreased insulin sensitivity, as exercise has the opposite effect on insulin sensitivity.
15.
Cooling down after exercise is important to
Correct Answer
B. Restore circulation to its normal resting condition
Explanation
Cooling down after exercise is important because it helps restore circulation to its normal resting condition. During exercise, blood flow increases to supply oxygen and nutrients to the working muscles. Cooling down gradually decreases the intensity of exercise, allowing the heart rate and blood pressure to return to normal gradually. This helps prevent blood pooling in the extremities and promotes the efficient return of blood to the heart. Additionally, cooling down aids in the removal of waste products, such as lactic acid, from the muscles, promoting faster recovery and reducing muscle soreness.
16.
According to the national institues of health,___ of American adults are overweight
Correct Answer
A. 66
Explanation
According to the National Institutes of Health, 66% of American adults are overweight. This suggests that a significant majority of adults in the United States have a body weight that exceeds the healthy range, which can have negative implications for their overall health and well-being. It highlights the prevalence of the issue and the need for interventions and awareness campaigns to address this problem.
17.
Which of the following are activities that use calories?
Correct Answer
C. All of these use calories
Explanation
All of the given options are activities that use calories. Vital body dysfunctions, such as breathing and maintaining body temperature, require energy and therefore burn calories. Physical activities, such as exercise or any form of movement, also use calories. Additionally, food digestion is a metabolic process that requires energy and contributes to calorie expenditure. Therefore, all of these activities utilize calories.
18.
According to standards issued bu the national institues of health,a healthy BMI is betweeen
Correct Answer
B. 18.5 and 24.9
Explanation
According to standards issued by the National Institutes of Health, a healthy BMI (Body Mass Index) falls between 18.5 and 24.9. This range is considered optimal for maintaining a healthy weight and reducing the risk of various health issues associated with being underweight or overweight. BMI is calculated by dividing an individual's weight in kilograms by the square of their height in meters.
19.
People who tend to store weight in the ___ are at increased risk for chronic disease
Correct Answer
B. Abdomen
Explanation
People who tend to store weight in the abdomen are at increased risk for chronic disease. This is because fat accumulation in the abdominal area, specifically around the organs, is associated with higher levels of visceral fat. Visceral fat is metabolically active and releases harmful substances into the body, increasing the risk of conditions such as heart disease, type 2 diabetes, and certain cancers. Therefore, individuals who carry excess weight in their abdomen should be cautious and take steps to reduce it in order to lower their risk of chronic diseases.
20.
A condition characterized by extreme dissatisfaction with appearance,body type,and /or body composition is
Correct Answer
B. Body dysmorpHic disorder
Explanation
Body dysmorphic disorder is a mental health condition characterized by extreme dissatisfaction with one's appearance, body type, or body composition. Individuals with this disorder often have a distorted perception of their own appearance and may obsessively focus on perceived flaws that are not noticeable to others. This dissatisfaction can lead to significant distress and impairment in daily functioning. Amenorrhea refers to the absence of menstruation, while bipolar disorder is a mood disorder characterized by episodes of mania and depression. Therefore, body dysmorphic disorder is the correct answer in this context.
21.
What is the number one killer of American women?
Correct Answer
B. Heart disease
Explanation
Heart disease is the number one killer of American women because it encompasses a range of conditions that affect the heart and blood vessels, such as coronary artery disease, heart attacks, and heart failure. These conditions can be caused by factors like high blood pressure, high cholesterol, smoking, obesity, and a sedentary lifestyle. Heart disease is a major health concern for women as it often presents with different symptoms compared to men, leading to delayed diagnosis and treatment. Therefore, it is crucial for women to be aware of the risk factors, maintain a healthy lifestyle, and undergo regular check-ups to prevent and manage heart disease.
22.
The large artery that recieves blood from the left ventricle and disributes it to the rest of the body is called the
Correct Answer
B. Aorta
Explanation
The large artery that receives blood from the left ventricle and distributes it to the rest of the body is called the aorta. The aorta is the main artery in the body and carries oxygenated blood to all parts of the body except the lungs. It is responsible for supplying oxygen and nutrients to all organs and tissues, ensuring proper functioning of the body.
23.
When the heart contracts,called__,blood pressure___;when the heart relaxes,called___,blood pressure___.
Correct Answer
B. Systole,increases,diastole,decreases
Explanation
During systole, the heart contracts, which leads to an increase in blood pressure. This is because the contraction of the heart causes blood to be forcefully pumped into the arteries, resulting in higher pressure. On the other hand, during diastole, the heart relaxes, causing blood pressure to decrease. This is because there is less force being exerted on the arterial walls as the heart is not actively pumping blood during this phase.
24.
All of the following CVD risk factors can be changed, EXCEPT
Correct Answer
C. Family history of CVD
Explanation
Cigarette smoking and physical inactivity are both modifiable risk factors for cardiovascular disease (CVD), meaning individuals can take action to change or eliminate these factors from their lifestyle. However, family history of CVD is a non-modifiable risk factor, as it is determined by genetics and cannot be changed. Therefore, the correct answer is family history of CVD.
25.
Smoking increases cardiovascular risk in all of the following ways,EXCEPT
Correct Answer
A. Increasing oxygen in the blood
Explanation
Smoking increases cardiovascular risk by reducing high-density lipoproteins and increasing blood pressure. However, it does not increase oxygen in the blood. In fact, smoking decreases the amount of oxygen that can be carried by the blood, as it damages the lungs and impairs their ability to exchange gases effectively. This can lead to a decrease in oxygen supply to the body's tissues and organs, increasing the risk of cardiovascular problems.
26.
The for of cholesterol that draws cholesterol out of the walls of the arteries and returns it to the liverfor recycling is
Correct Answer
A. HDL
Explanation
HDL, also known as high-density lipoprotein, is the form of cholesterol that helps remove excess cholesterol from the walls of arteries and transports it back to the liver for recycling. This process helps to prevent the buildup of plaque in the arteries and reduces the risk of heart disease. LDL and VLDL, on the other hand, are forms of cholesterol that contribute to the accumulation of plaque in the arteries, increasing the risk of cardiovascular problems.
27.
Damage to the heart muscle because of lack of blood supply is called
Correct Answer
A. Myocardial infarction
Explanation
Myocardial infarction is the correct answer because it refers to the damage to the heart muscle caused by a lack of blood supply. This occurs when a coronary artery is blocked, usually due to a blood clot, leading to the death of heart muscle cells. Cardiac arrest, on the other hand, is a sudden loss of heart function, while angina pectoris is chest pain or discomfort caused by reduced blood flow to the heart muscle.
28.
A tumor that is NOT cancerous
Correct Answer
B. Benign
Explanation
Benign refers to a tumor that is not cancerous. In contrast, melanoma is a type of skin cancer that is malignant. The term "benign" describes tumors that do not invade nearby tissues or spread to other parts of the body.
29.
When a malignant tumor spreads to sites distant from the primary tumor,the process is known as
Correct Answer
B. Matastasis
Explanation
Metastasis is the correct answer because it refers to the process in which cancer cells break away from the primary tumor and spread to other parts of the body through the bloodstream or lymphatic system. This is a characteristic feature of malignant tumors and is responsible for the majority of cancer-related deaths. Hyperplasia refers to an increase in the number of cells in a tissue, while dysplasia refers to abnormal cell growth and development, but neither of these terms specifically describes the spread of cancer to distant sites.
30.
The most common form of skin cancer is
Correct Answer
A. Carcinoma
Explanation
The most common form of skin cancer is carcinoma. Carcinoma refers to cancer that originates in the epithelial cells, which are the cells that line the outer and inner surfaces of the body. Skin carcinoma typically develops in the top layer of the skin and is often caused by long-term exposure to the sun's ultraviolet (UV) rays. It is important to detect and treat carcinoma early as it can spread to other parts of the body if left untreated. Melanoma, on the other hand, is a less common but more aggressive form of skin cancer that develops in the melanocytes, the cells that produce pigment in the skin. Sarcoma is a type of cancer that develops in the connective tissues, such as bones, muscles, and blood vessels, and is not commonly associated with skin cancer.