Unit 1 Cell Test Review

Complete the statement below to make it true. (LS.2a) "The Cell Theory provides evidence of _____."

• how advances in technology improved our understanding of cells

• how and why cell theory became a scientific law

• why cell theory did not exist until the 1900s

• why our understanding of cells has not changed since the 1600s

A scientist is interested in taking a 3D image and seeing the smallest parts of cells. What should the scientist use? (LS.2a)

• Only their eyes.

• Magnifying glass

• Compound Light microscope

• Scanning Tunneling Microscope

If a scientific theory about cells is challenged by new information, what could happen to our current knowledge of cells? (LS.2a)

• A. A new theory will be immediately established.

• B. Nothing, because scientific theories cannot change.

• C. All that is known about cells will be erased.

• D. Our current understanding of cells may change.

Tags

NGSS.HS-LS2-3

Match each description to the correct scientific term. (LS.2a)

• An explanation of why something

• law

• An explanation based on evidence

• hypothesis

• A testable explanation or prediction bas

• theory

What is true about this specimen? Select two correct answers. (LS.2c)

• It is made of animal and plant cells.

• These cells have chloroplasts and walls.

• This specimen is made of only plant cells.

• Plant cell walls are made of green bricks

Tags

NGSS.MS-LS1-1

What is needed to see the smallest organelles in plant cells? (LS.2a)

• Use a magnifying glass to examine Elodea nuttallii.

• Collect a larger sample of Elodea nuttallii.

• Change to the lens with 10x magnifying power.

• Use a much more powerful microscope.

Tags

NGSS.MS-LS1-1

Which of the following is an incorrect statement about cells? (LS.2a)

• A. Cells make up all living things.

• B. All cells look exactly the same.

• C. Cells are different shapes and sizes.

• D. New cells come from pre-existing cells.

Tags

NGSS.MS-LS1-1

Which of the following statements describes how scientists can use microscopes? (LS.2a)

• Investigating cells and cell organelles

• Comparing cells of different animals

• Discovering different types of cells

• All statements are correct.

Which organelle in the plant cell stores water and food?

• Endoplasmic Reticulum

• Mitochondria

• Chloroplast

• Vacuole

Tags

NGSS.MS-LS1-2

In the animal cell, which organelle controls what enters and exits the cell?

• Nucleus

• Membrane

• Mitochondrion

• Vacuole

Tags

NGSS.MS-LS1-2