The Cell Theory & Cell Structure

The 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

Which invention from the 17th century allowed for the development of modern cell theory?

• X-rays

• computers

• the light microscope

• the scanning electron microscope

The combined observations of Matthias Schleiden, Theodor Schwann and Rudolph Virchow resulted in the formation of the cell theory. Which of the following is not part of the cell theory?

• All cells contain a nucleus.

• All cells come from other living cells.

• All living organisms are made of one or more cells.

• Cells are the basic unit of structure and function of all

        living things.

A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two very different organisms?

• Plants have cells but animals do not.

• They are both made of one or more cells

• They both come from the same kind of cell

• They both come from a non-living organism

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

There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells?

• Lysosome

• Mitochondrion

• Nucleus

• Ribosome

Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell membrane against the concentration gradient. How do these molecules get into the cell? 

• Passive transport by diffusion

• Active transport using ATP 

• Passive transport by osmosis

• Phagocytosis

Which characteristic do most plants have in common?

• They are unicellular

• They are prokaryotic

• They produce seeds

• They are autotrophic

Which cell structure is correctly paired with its primary function?

 

• Ribosome - protein synthesis

• Mitochondrion - movement

• Vacuole - cell division

• Nucleus - storage of nutrients

The diagram to the right represents a cell of a green plant. 

 

Solar energy is used to produce energy-rich compounds in which structure?

• A

• B

• C

• D