Unit 1: Characteristics of Life, Macromolecules, Lab Safety

A _____ is something in the environment that causes an organism to respond.

• stimulus
• response
• cause
• effect

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Which of these is not true about all organisms?

• all living things have many cells
• all living things need water
• all living things respond to stimuli
• all living things reproduce

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What is another way of saying organism?

• living thing
• organ system
• tissue team
• critter

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Which of these statements is true about plants?

• they are producers
• they need water and carbon dioxide
• they need sunlight
• all of these statements are true

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Which of these statements is true about animals?

• they are consumers
• they need water and oxygen
• they need to eat other living things for food
• all of these statements are true

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Your body shivers when you are cold. This is because of the concept of...

• homeostasis
• heredity
• energy metabolism
• cellular organization

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Living things are made up of units called

• DNA

• Cells

• Homeostasis

• Seeds

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If an organism is made entirely of one cell it is called...

• Multicellular

• Prokaryotic

• Unicellular

• Eukaryotic

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Living things are based on a universal genetic

code. What molecule is responsible for that code?

• RNA

• Lipid

• Protein

• DNA

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A stimulus can be external or internal.

• False

• True

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