Biology 9 Unit 2 Review

Biology is the study of...

• animals and plants only

• the environment only

• the living world

• the land, water, and air on earth

What are 3 of the characteristics of life?

• growth and development

• ability to move

• respond to stimuli from the environment

• eat food with their mouth

• reproduction

Which of the following are characteristics of life?

• made up of cells

• based on genetic code

• need for material and energy

• maintaining internal balance (homeostasis)

• evolution (change over time)

Which of the following characteristics of living things BEST explains why birds fly south for the winter?

• living things respond to their environment

• living things maintain internal balance

• living things are made up of cells

• living things are based on genetic code

The process by which organisms maintain their internal balance and keep it fairly constant is called...

• evolution

• metabolism

• photosynthesis

• homeostasis

Water is a ____________ molecule, which means it has a slightly positive side and a slightly negative side.

• large

• polar

• cooperative

• acidic

The energy that drives metabolism in animals to create ATP (an important molecule that provides energy to the body) come from...

• food we eat

• homeostasis

• water

• none of these

All living things are composed of...

• skin

• blood

• cells

• bones

Which of the following are the major biomolecules we learned about?

• DNA/RNA

• lipids

• nucleic acids

• carbohydrates

• sulfuric acid

How are monomers and polymers different?

• monomers are made of 2 or more subunits and polymers are made of only 1 subunit

• monomers are made of only 1 subunit and polymers are made of 2 or more subunits