Biology
What is the basic unit of structure of living organisms?
cell
What is the symbol for oxygen?
О
What does a thermometer measure?
Why does a person start breathing faster when running?
The body needs more oxygen for energy.
Where in the cell does the process of respiration (energy production) occur?
mitochondria
What happens during a chemical reaction?
New substances are formed
What does it take for the body to start moving?
force
Why does a person's body temperature rise when they are sick?
The body accelerates the fight against infection
Which organ system is responsible for protecting the body from disease?
lmmune system
What is the name of a substance consisting of atoms of one type?
Element
What happens to water when it is heated?
it evaporates
Why does water turn into steam when heated?
The molecules gain more energy and fly apart.
Which organ plays a major role in cleanıg the blood of harmful substances?
kıdneys
How can you distinguish a chemical reaction from a physical phenomenon?
Color changes or gas is released
What is the name of the force that attracts all bodies to the Earth?
Gravity
Why does a parachute slow down a person's fall?
Air resistance increases
Which organ is responsible for pumping blood in the human body?
Heart
Why can't acids be stored in metal containers?
The acid can react with the metal.
What type of energy does a moving body have?
Kinetic
why plants stretch toward the light?
light helps them grow and produce nutrients