Exploring Living Things and Cells

Which of the following is a characteristic of all living things?

• Ability to fly

• Ability to reproduce

• Having fur

• Living in water

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What is the basic unit of life according to cell theory?

• Atom

• Cell

• Tissue

• Organ

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Which instrument is used to observe cells?

• Telescope

• Microscope

• Periscope

• Stethoscope

Who is known for contributing to the development of the cell theory?

• Albert Einstein

• Robert Hooke

• Isaac Newton

• Charles Darwin

Which of the following is NOT a characteristic scientists use to determine if something is living?

• Growth

• Movement

• Ability to make sound

• Response to stimuli

Which statement best describes the cell theory?

• All living things are made of atoms.

• All living things are made of cells, and all cells come from other cells.

• All living things are made of tissues.

• All living things are made of organs.

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How did the invention of the microscope help scientists develop the cell theory?

• It allowed scientists to see atoms.

• It allowed scientists to see cells and their structures.

• It helped scientists see planets.

• It made plants grow faster.

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Which scientist first observed and named "cells" when looking at cork under a microscope?

• Matthias Schleiden

• Theodor Schwann

• Robert Hooke

• Rudolf Virchow

A student observes a sample under a microscope and sees many small, box-like structures. What can the student conclude about the sample?

• It is made of atoms.

• It is made of cells.

• It is made of organs.

• It is made of tissues only.

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You are given two samples: one is a rock, and the other is a leaf. Using the characteristics of living things, how would you determine which is living?

• Check which one is heavier.

• See which one can grow and respond to stimuli.

• See which one is green.

• Check which one is harder.

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