Cell Theory and Microscopes

Multiple Choice

Which of the following statements is not part of the cell theory?

• Cells are the basic unit of structure and function in all living things.

• All cells are produced from other cells.

• Only animal cells are composed of cells.

• All living things are composed of cells.

Multiple Choice

The ___ is the basic unit of structure and function of organisms

• atom

• cell

• matter

• organs

Multiple Choice

All cells -----

• come from other dead cells

• come from other living cells

• spontaneously generate

• form from water and air

Multiple Choice

Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?

•  All living things are made of cells.

• All cells come from other preexisting cells.

• Cells form through spontaneous generation.

•  Cells are the basic structural and functional units of life.

Multiple Choice

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

• All living things have hair.

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

• The cells of all living things have chloroplast.

• All living things can move. 

Multiple Choice

An Amoeba is a unicellular, animal-like protist that lives in ponds and streams. According to cell theory, where did this cell come from?

• another pre-existing amoeba cell.

• energy from sun that allowed the protist to reproduce.

• a multicellular organism.

• the nonliving environment.

Multiple Choice

In the 1800s two scientists, Theodor Schwann and Matthias Schleiden, studied different types of organisms. After many years of studying a great variety of organisms, they drew similar but independent conclusions about their observations.

What statement was developed most directly from these conclusions and is part of the modern cell theory?

• The functions of living things occur in cells.

• Cells exist only in multicellular organisms.

• Living things are composed of cells.

• Cells contain hereditary information.

Multiple Choice

When cells are damaged, new cells are created by cell a process called cell division. How does the cell theory support this fact?

• It states that all cells have a nucleus which divides.

• It states that all living things are made up of one or more cells.

• It states that cells come from previously existing cells.

• It states that the basic units of structure and function are cells.

Multiple Choice

What is NOT part of the modern cell theory?

• all cells contain a nucleus 

• metabolism (processing energy) occurs in cells

• genetic (hereditary) info is passed from one cell to another

• all cells have the same basic chemical composition (makeup)

Multiple Choice

  Which invention was the most important thing that helped scientists develop the cell theory?

• compound light microscope

• petri dish

• scanning electron microscope

• dissection tools

Multiple Choice

Why are microscopes important when studying most cells?

• Most cells are very large.

• Most cells are very small.  

• Most cells move very quickly.

• Most cells are dead.  

Multiple Choice

What is the advantage of using a light microscope over an electron microscope?

• Greater magnification

• Greater resolution

• Can view living cells

• Images are only in black and white

Multiple Choice

If you want to see very small organelles such as ribosomes you need to use a...

• Electron microscope

• Light microscope

• Dissecting microscope

• Hand lends

Multiple Choice

Before a scientific theory is accepted, it has

• been tested by only one scientist.

• been published in scientific journals.

• been tested many times by different scientists.

• been approved by the International Committee of Scientists.

Multiple Choice

Force = Mass x Acceleration

• hypothesis

• theory

• law

Multiple Choice

If I feed my dog less food, she will lose weight.

• hypothesis

• theory

• law

Multiple Choice

You observe that, upon waking up each morning, your trashcan is overturned and trash is spread around the yard. You propose that raccoons are responsible. Is this fact, a law, a theory, or a hypothesis?

• Fact

• Law

• Theory

• Hypothesis

Multiple Choice

Once a theory has been tested and confirmed it cannot be changed.

• True

• False

Multiple Choice

Scientists all over the world are sure that all matter is made of atoms.  All of their investigations point to the fact that this is true.  Unfortunately, there is no way to know 100% for sure if atoms are real.  This means that the idea of atoms is a _________.

• question

• hypothesis

• theory

• law