Body Systems
What is the process of mechanical digestion?
a. chemical reactions breaking down food
b. physical breakdown of food into smaller pieces
c. absorption of nutrients
d. elimination of waste
b. physical breakdown of food into smaller pieces
What are the main parts of the circulatory system?
a. heart, blood vessels, blood cells
b. lungs, trachea, bronchi
c. stomach, small intestine, large intestine
d. brain, spinal cord, nerves
a. heart, blood vessels, blood cells
What are nutrients?
a. substances that provide flavor to food
b. substances in food that provide raw materials and energy for the body
c. substances that cause food to spoil
d. substances that make food colorful
b. substances in food that provide raw materials and energy for the body
What is thermal energy transfer?
a. the movement of particles in a solid
b. the transfer of energy from a region of higher temperature to a region of lower temperature
c. the process of freezing water
d. the creation of electromagnetic waves
b. the transfer of energy from a region of higher temperature to a region of lower temperature
What is an open system?
a. a system that does not exchange matter or energy with the environment
b. a system that exchanges matter or energy with the environment
c. a system that only exchanges energy with the environment
d. a system that only exchanges matter with the environment
b. a system that exchanges matter or energy with the environment
What is the main function of the large intestine?
a. absorbing water
b. producing enzymes
c. storing nutrients
d. breaking down proteins
a. absorbing water
What is the main function of alveoli in the lungs?
a. producing mucus
b. gas exchange
c. storing oxygen
d. transporting blood
b. gas exchange
what is the main function of fats in the body?
a. provide quick burst of energy
b. form part of the cell membrane and store energy
c. help in the digestion of proteins
d. regulate body temperature
b. form part of the cell membrane and store energy
What is potential energy?
a. energy related to particle speed
b. energy related to the distance between particles
c. energy related to the type of substance
d. energy related to the mass of a substance
b. energy related to the distance between particles
What is thermal energy?
a. the measure of average kinetic energy of particles
b. the total energy of a substance, including kinetic and potential energy
c. the energy related to the mass of container
d. the energy related to the quantity of a substance
b. the total energy of a substance, including kinetic and potential energy
Which organ system includes the stomach, small intestine, and liver?
The digestive system
What is the main organ of the respiratory system?
Lungs
What type of fat is usually solid at room temperature?
Saturated fats
What is Conduction?
the transfer of energy between materials by the collisions of particles
What is radiation?
the transfer of energy from material to another by electromagnetic waves
What is the main function of the small intestine?
absorbing nutrients
What is the main function of the respiratory system?
taking in oxygen and eliminating carbon dioxide
What are the fat-soluble vitamins?
Vitamins A, D, E and K
What is the direction of thermal energy transfer?
from a region of higher temperature to a region of lower temperature
What is a thermogram?
An image created by measuring the radiation given off by objects
What is the main function of the excretory system?
Eliminate waste
What is the diaphragm?
a muscle below the lungs that helps with breathing
What is the main function of water in the body?
Regulate body temperature and remove wastes
What is thermal expansion?
increase in volume of a material when particle motion increases
What is diffusion?
movement of particles from high concentration to low concentration