Registered Dietetic Technician Test Food Science & Dietary Planning Flashcards

Which type of dietary fiber is most effective at lowering LDL cholesterol?

Answer: Soluble fiber

Soluble fiber, such as beta-glucan found in oats, forms a gel in the digestive tract that binds bile acids and lowers LDL cholesterol.

In food service, the FIFO inventory method stands for:

Answer: First In, First Out

FIFO (First In, First Out) ensures older stock is used before newer stock, reducing spoilage and food waste.

Which temperature range is considered the 'danger zone' for bacterial growth in foods according to the USDA?

Answer: 40°F to 140°F (4°C to 60°C)

The USDA defines the temperature danger zone as 40°F–140°F, where bacteria multiply rapidly in potentially hazardous foods.

Which nutrient is the primary fuel source for the brain under normal dietary conditions?

Answer: Glucose

Glucose derived from carbohydrates is the brain's preferred and primary fuel source under normal metabolic conditions.

An adequate intake (AI) value is established when:

Answer: Evidence is insufficient to establish an RDA but a value is still needed

The AI is used as a reference intake when evidence is too limited to establish a full RDA, based on observed or estimated adequate intakes.

Which mineral is a key component of hemoglobin and essential for oxygen transport in red blood cells?

Answer: Iron

Iron is a central component of the hemoglobin molecule, binding oxygen in the lungs and releasing it to tissues throughout the body.