Grade 8 Chapter 1 Review Quiz

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Chapter 2

This activity contains 10 questions.

The cell theory is a collection of assumptions about the cells of all living things. Which is the following is not part of the cell theory?

The cell is the smallest part of an organism that can carry out the activities of a living thing.An organism can be as simple as a single cell, or can be made up of trillions of cells.The cells of all living things come from other cells.Every cell works alongside other cells to form more complicated structures.

It may seem strange at first, but the correct method for viewing objects with a compound light microscope is to keep both eyes open at all times. This prevents squinting, which can tire out your face muscles after just a few minutes.

What is the name of the part of the compound light microscope that you look through with your eye?

the ocular lensthe objective lensthe stagethe diaphragm

There are several very important rules that must be followed when using a compound light microscope. Which of the following is an example of an incorrect technique when using this piece of equipment?

When first viewing, rotate the highest power objective lens to point at the stage and look through the ocular lens as you slowly focus with the coarse adjustment knob..After adjusting the focus with the coarse adjustment knob at the very beginning, you should only adjust the focus with the fine adjustment knob.Before beginning, rotate the low-power objective lens (the smallest lens) to point at the stage.Before viewing, move the stage as close to the low power objective lens as possible while viewing from the side.

What is part number 7 in this photograph of a compound microscope?

eyepiecelampobjective lensesstage

Which organelle is not found in animal cells?

cell membraneribosomeendoplasmic reticulumchloroplast

This is an electron micrograph of two identical organelles in lung tissue.
These organelles break down food and release its stored energy to fuel cell activities. What are they?

ribosomeschloroplastsmitochondriavacoules

Sometimes when a person is very ill their kidneys will stop functioning and they need to be put on dialysis. This is a diagram describing what happens during dialysis. The large red cells on the left are blood (containing disc-shaped red blood cells), blue is dialysis fluid and yellow is the membrane (or filter). Healthy kidneys filter out waste products in our blood. Dialysis does the same job.

As shown in the diagram, the yellow membrane is ______ to red blood cells.

selectively permeableimpermeablediffusionpermeable

This is a diagram showing how diffusion works across a cell membrane. The top of the image is outside the cell, the bottom is inside the cell, and a cell membrane runs across the middle.

The diagram doesn't say what the little blue particles might be. What are they least likely to be?

food particleswater moleculesoxygen moleculesribosomes

These are red blood cells in three different kinds of solutions. In a hypertonic solution, the cells shrivel up. In a hypotonic solution, the cells grow and may explode. In an isotonic solution, the cells remain a normal size. Any size changes are due to water moving into and out of the red blood cells.

Notice the arrows in the lower part of the diagram. What process is being shown here?

impermeable membranefiltrationdiffusionosmosis

These three cells are stained with fluorescent blue Hoechst stain.

The Hoechst cellular stain makes DNA appear bright blue. DNA fills an organelle which functions as the cell's brain. Which cell organelle is DNA found in?

cytoplasmnucleusendoplasmic reticulumvacoule

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Grade 8 Chapter 1 Review Quiz

The cell theory is a collection of assumptions about the cells of all living things. Which is the following is not part of the cell theory?

There are several very important rules that must be followed when using a compound light microscope. Which of the following is an example of an incorrect technique when using this piece of equipment?

What is part number 7 in this photograph of a compound microscope?

Which organelle is not found in animal cells?

This is an electron micrograph of two identical organelles in lung tissue. These organelles break down food and release its stored energy to fuel cell activities. What are they?

This is an electron micrograph of two identical organelles in lung tissue.
These organelles break down food and release its stored energy to fuel cell activities. What are they?