Life Science Review

Which statement is true about respiratory and circulatory systems?

• The respiratory system brings nutrients into the body and the circulatory system moves the body

• The respiratory system moves the body and the circulatory system brings in nutrients

• The respiratory system brings oxygen in, and the circulatory system moves the oxygen

• The respiratory system moves oxygen through the body, while the circulatory system brings oxygen in the body.

Which statement is true?

• A girl's appearance does not depend on the traits of either of her parents.

• A girl will inherit half of her DNA from each parent and has a combination of their traits.

• A girl automatically gets most of her traits from her mother

• A girl gets more of her father's DNA

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Which statement is true about bacteria?

• They have a lot of large cells.

• They carry out all necessary life processes

• They are a large green plants

• They are multicellular

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Why do single-celled plankton float on top of water?

• To get energy from the sun to live without the help of other cells

• to attach to other plankton to go for a ride

• to survive without ever reproducing

• to survive without ever removing wastes

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List the steps of the scientific method

d

e

f

c

b

a

Conduct experiment

Draw conclusions

Form a hypothesis

Communicate results

Analyze results

Ask a question

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Which are parts of the respiratory system?

• heart and blood

• lungs, nose, mouth

• muscles and nerves

• stomach and esophagus

rabbits, caterpillars, deer, wolves, owls, grasshoppers, and humans are all...

• decomposers

• consumers

• carnivores

• producers

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How are the respiratory and digestive systems similar?

• Both protect organs in the body

• both circulate nutrients

• both help the body move from place to place

• both take things in from the world that the body needs to live

Which is a consumer eating a consumer?

• fish eating algae

• shark eating tuna

• turtle eating grass

• worm eating dead things

Foxes eat rabbits and mice. All of the mice die (so sad). The rabbit population stays the same. What might happen to the foxes?

• foxes will decrease because they have less rabbits to eat

• MORE FOXES because they only have rabbits to eat

• MORE FOXES because they will be competing for less food

• Foxes will decrease because there is less available food for all of the foxes.

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