Which of the following best defines the state of energy balance?
When protein intake is exactly equal to fat intake
When caloric intake exceeds the amount of energy expended
When caloric intake is equal to the amount of energy expended
When caloric intake is lower than the amount of energy expended
The Correct Answer is C
A. Energy balance is not determined by the ratio of protein to fat intake. While macronutrient composition affects overall health, metabolism, and satiety, the concept of energy balance specifically refers to the relationship between calories consumed and calories expended, regardless of whether those calories come from protein, fat, or carbohydrates.
B. Consuming more calories than the body expends leads to a state of positive energy balance. Over time, this excess energy is stored as fat, resulting in weight gain. Positive energy balance is the opposite of maintaining stable weight and does not represent true energy balance.
C. Energy balance occurs when caloric intake matches the body’s energy expenditure, which includes basal metabolic rate (BMR), physical activity, and the thermic effect of food (energy used to digest, absorb, and metabolize nutrients). Maintaining energy balance is essential for sustaining a stable body weight, supporting normal physiological functions, and preventing chronic conditions such as obesity or malnutrition. This balance ensures that energy intake provides enough fuel for daily activities without excess storage or depletion.
D. When caloric intake is lower than energy expenditure, the body is in a state of negative energy balance. This causes the body to use stored energy, primarily from fat and sometimes muscle tissue, leading to weight loss. While negative energy balance may be intentional for weight reduction, it is not a state of equilibrium.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Clostridium perfringens is a common cause of foodborne illness, often associated with improperly stored cooked meats and gravies. While it causes many cases of mild gastrointestinal illness, it rarely leads to hospitalization or death.
B. Salmonella is responsible for the largest number of foodborne illnesses in the United States and causes the greatest number of hospitalizations and deaths among foodborne pathogens. It commonly contaminates eggs, poultry, meat, and sometimes produce. Infections can range from mild gastroenteritis to severe systemic illness, particularly in young children, older adults, and immunocompromised individuals, leading to hospitalization or, in severe cases, death.
C. Campylobacter is a leading cause of bacterial gastroenteritis and is often linked to undercooked poultry. While it can cause significant illness and sometimes complications like Guillain-Barré syndrome, it results in fewer hospitalizations and deaths than Salmonella.
D. Listeria monocytogenes causes severe illness in vulnerable populations, such as pregnant women, newborns, and the elderly, and can lead to miscarriage or meningitis. However, it is relatively rare compared to Salmonella and does not account for the greatest number of overall cases.
Correct Answer is ["C","D","E"]
Explanation
A. Childhood generally refers to the period after toddlerhood and infancy, typically from ages 3–12. It is not one of the first three stages of the human life cycle.
B. Puberty is a developmental milestone within adolescence and occurs much later in the life cycle. It is not part of the first three stages.
C. The prenatal stage begins at conception and continues until birth. This stage encompasses all development within the womb, including cell division, organ formation, and growth, laying the foundation for life after birth.
D. Infancy follows birth and generally spans from birth to about 12 months. During this stage, rapid growth, motor development, and sensory and cognitive milestones occur.
E. The toddler stage typically covers ages 1–3 years. This stage is marked by increased mobility, language development, social interaction, and early learning experiences.
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