Exploring Cell Theory Fundamentals

Who first observed cells under a microscope and gave them the name "cells"?

• Robert Hooke

• Louis Pasteur

• Charles Darwin

• Gregor Mendel

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Which scientist is known for stating that all plants are made of cells?

• Matthias Schleiden

• Rudolf Virchow

• Anton van Leeuwenhoek

• Theodor Schwann

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What is one of the main principles of cell theory?

• All living things are made of cells

• Cells can only be seen with the naked eye

• Only animals have cells

• Cells are not important to life

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Which scientist concluded that all cells come from pre-existing cells?

• Rudolf Virchow

• Robert Brown

• Louis Pasteur

• Matthias Schleiden

Match the scientist to their contribution: Anton van Leeuwenhoek.

• Discovered the cell nucleus

• Improved the microscope and observed living cells

• Stated that all animals are made of cells

• Proposed that all cells come from other cells

Which of the following best describes the impact of cell theory on modern science?

• It helped scientists understand that all living things share a basic unit of life

• It proved that only plants have cells

• It showed that cells are not important

• It made microscopes unnecessary

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If a new organism is discovered, how would cell theory help scientists study it?

• By assuming the organism is made of cells and studying its structure

• By ignoring the organism’s structure

• By only looking at its color

• By not using a microscope

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Why was the invention of the microscope important for the development of cell theory?

• It allowed scientists to see and study cells, which are too small to see with the naked eye

• It made cells larger

• It replaced the need for experiments

• It made all living things visible without any tools

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Imagine you are a scientist in the 1800s. How would you use evidence to convince others that all living things are made of cells?

• By showing drawings and microscope images of cells in different organisms

• By guessing without any proof

• By ignoring what others say

• By only studying one type of organism

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A student claims that rocks are made of cells because they are found on Earth. Using your knowledge of cell theory, how would you respond?

• Rocks are not living things, so they are not made of cells

• All things on Earth are made of cells

• Only water is made of cells

• Rocks can turn into cells

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