Attainment Biology Chapter 3 Review

What do biologists use to know more about molecules and cells?

• They use microscopes

• They use their own eyes

• They use telescopes

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What are examples of multicellular organisms?

• Single-celled organisms

• Humans, animals, and plants

• Nonliving things

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What were the first type of cells on Earth?

• Eukaryotic cells

• Animal cells

• Prokaryotic cells

Which cells are used for communication?

• Muscle cells

• White blood cells

• Neurons

What do organelles do?

• They work together to keep the cell alive

• They all have the same job

• They form colonies

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Who has the same DNA? Choose the correct answer.

• Humans and chimpanzees

• Prokaryotes and eukaryotes

• No two organisms have exactly the same DNA

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What is DNA made up of? Choose the correct answer.

• Organisms

• Bases

• Prokaryotes

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What do the letters A, T, C, and G represent? Choose the correct answer.

• Nucleotides

• Cells

• Plants

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What can create big differences in how people look? Choose the correct answer.

• Very small differences in the DNA code

• The same DNA code

• Cells

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What causes the traits you have, like your eye color and height? Choose the correct answer.

• Genes

• Genetically-modified food

• Scientists

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