What are blood vessels that carry blood back to the heart called?
Veins
100
What is the body's main energy source?
glucose
100
What is a food calorie?
the amount of energy needed to raise the temperature of 1kg of water 1 degree celsius
100
There are 306 bones in the body
False
100
What is a nuclear membrane?
It is a two-layered membrane with pores through which substances enter and leave the nucleus
200
What is the largest artery in the human body?
the aorta
200
What are cilia?
micro hairs that propel mucus and dust up the trachea to be coughed up
200
What are the three types of carbohydrates?
sugar, fibers, starch
200
Bones are about 22% water
True
200
What is a cytoplasm?
A jelly-like fluid in which organelles float
300
What do veins carry?
deoxygenated blood
300
What is the larynx the home to?
the vocal cords
300
What are two examples of foods that contain fiber?
cereal and beans
300
One type of joint is a ? joint
hinge
300
What is a ribosome?
Small structure that functions in protein assembly
400
What are the two upper chambers of the heart?
left and right atrium
400
The trachea is also known as the...
wind pipe
400
What is a scientific word for fats?
lipids
400
One of the functions of the skeletal system is to protect internal organs
True
400
What is a vacuole?
A sac that stores and transports ingested materials, waste products, and water
500
What is a right atrium?
The right upper chamber of the heart. The right atrium receives deoxygenated blood from the body through the vena cava and pumps it into the right ventricle which then sends it to the lungs to be oxygenated.
500
The part that is between the nasal cavity and the larynx is the...
pharynx
500
How much liters of water should you drink everyday?
2 liters
500
The appendicular skeleton consists of the skull, vertebral column, ribs, and sternum
False
500
What is a cell membrane?
It encloses the contents of the cell, regulating the flow of substances into and out of the cell