Which of the following best describes a unicellular organism?

An organism made of a single cell

An organism with specialized tissues

Which statement correctly explains why cells are considered the basic unit of structure and function in living things?

Cells are the smallest part of an organism that can carry out all life processes

How did the invention of the microscope contribute to the development of cell theory?

It made it possible to observe cells and their structures

It allowed scientists to see atoms

It helped scientists study stars

It was used to measure temperature

Why is it important that all cells come from pre-existing cells?

It explains how living things grow and reproduce

It shows that cells can form from non-living material

It proves that all cells are identical

Which of the following best describes the relationship between cells, tissues, and organs?

Organs are made of tissues, which are made of cells

Cells are made of organs, which are made of tissues

Tissues are made of organs, which are made of cells

Organs are made of cells, which are made of tissues

How did the work of Schleiden and Schwann contribute to the cell theory?

They showed that both plants and animals are made of cells

They proved that cells can live forever

A student observes a sample under a microscope and sees many similar cells grouped together. What can the student conclude about the sample?

It is likely a tissue from a multicellular organism

Why was the discovery that all cells come from pre-existing cells important to biology?

It disproved the idea of spontaneous generation

It showed that cells can form from air

It proved that all cells are the same size

It explained why some organisms are not made of cells

Which of the following best explains why cell theory is considered a fundamental concept in biology?

It provides a framework for understanding the structure and function of all living things

It is based on a single experiment

It is no longer accepted by scientists

If a scientist finds an organism that is not made of cells, what would this mean for the cell theory?

The cell theory would need to be revised

A student is given a microscope slide with a sample from pond water. She observes several single-celled organisms moving independently. What does this observation demonstrate about the cell theory?

Living things can be made of just one cell

A scientist observes that when a cell divides, two new cells are formed. How does this observation support the cell theory?

It shows that all cells come from pre-existing cells

It proves that cells are made of tissues

It shows that cells can live forever

It proves that all cells are the same size

Imagine you are a scientist in the 1800s. You observe that both plant and animal tissues are made of cells. What hypothesis could you form based on your observations?

Living things are not made of cells

Suppose a new technology allows scientists to see even smaller structures inside cells. How might this impact our understanding of the cell theory?

It could lead to new discoveries about how cells function and are structured

It would prove that cells do not exist

It would show that all cells are identical

It would make microscopes unnecessary

A group of scientists finds evidence that some living things are not made of cells. What should they do next according to scientific practice?

Re-examine and possibly revise the cell theory

You are given two unknown samples. One is made of a single cell, and the other is made of many cells working together. How would you classify these samples based on cell theory?

The first is unicellular, the second is multicellular

A scientist claims to have created life from non-living materials in a laboratory. How does this claim challenge the cell theory?

It challenges the idea that all cells come from pre-existing cells

It proves that all cells are identical

It shows that cells are not the basic unit of life

How would you design an experiment to test whether all living things are made of cells?

Collect samples from different living things and observe them under a microscope

Ask people if they believe in cell theory

Measure the size of different organisms

Which is not part of the cell theory?

cells contain membrane bound organelles

the basic unit of life is the cell

cells came from preexisting cells

all living things come from cells

Which of these is NOT part of cell theory?

All living things have blood cells

All living things are made up of cells

Cells come only from other cells

Cells are the smallest living unit of an organism

What is one way in which all living things on Earth are alike?

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

The cells of all living things have chloroplast.

Understanding Cell Theory

Quiz

•

Science

•

6th Grade

•

Practice Problem

•

Medium

•

TEKS.SCI.6.13A, NGSS.MS-LS1-1, 112.34.c.4.A

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Standards-aligned

Karina Padron

Used 18+ times

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TEKS.SCI.6.13A

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Understanding Cell Theory

36 questions

Who is known as the "father of microscopy" for his early observations of cells?

What is the basic unit of structure and function in all living organisms?

Which scientist first used the term "cell" to describe the tiny compartments he saw in cork?

According to cell theory, all cells come from:

Which of the following is NOT a part of the cell theory?

Who proposed that all plants are made of cells?

Who stated that all animals are made of cells?

Which scientist contributed the idea that all cells come from pre-existing cells?

What tool was essential for the discovery and study of cells?

Which of the following best describes a unicellular organism?

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