Metabolism
All of the chemical reactions lviing things need to work properly.
What is the structure of DNA described as?
double-helix, double-stranded molecule held together by hydrogen bonds
Through this cycle, carbon compounds are added to and removed from Earth and the air.
Carbon Cycle
What does good ozone do?
It protects Earth from harmful energy from the Sun.
What four elements is th ehuman body mostly made up of?
Carbon, oxygen, hydrogen, nitrogen
Where is DNA found?
In the cells of living things.
A compound make of three oxygen atoms that is both a natural and human-made gas
ozone
What produces most methane on Earth?
Human Activity
Name three macromolecules (or biomolecules) needed for the body.
Proteins, lipids, carbohydrates.
Give an example of a trait that can be inherited from a parent to their offspring.
varies
Where do we get oxygen from?
Plants
Why is methane harmful?
It traps heat from the Sun and warms Earth's atmosphere
Give an example of a simple carb and a complex carb.
answers will vary
What is a unit, or segment, of information made up of DNA that determines a living thing's characteristics?
Gene
A carbon-hydrogen compound that is both natural and human-made.
Methane
What do fossil fuels produce when they are burned?
Carbon Dioxide and Water
How do enzymes help in metabolism?
They speed up chemical reactions in the body.
What three things make up DNA?
bases, sugars and phosphates
Why can methane be bad for the Earth?
It is not stable adn easily enters combustion reactions, producing carbon dioxide and water. It increases earth's temperature.
What are examples of pollution?
air, sound, light, water