Kambrya year 7 science exam revision - Microscopes and cells

What do scientists use microscopes for?

• To better see small things in order to study them

• To see far away things in order to study them

• To better see larger things in order to study them

Cells are best described as....

• The smallest things we know of

• Living organisms

• The building blocks of life

• A 'little organ'

Why must a specimen be thin, when being viewed with a microscope?

• So the light gets reflected into the objective lens

• So we can study the specimen

• So we don't need to use too much power when viewing specimens

• So the light can pass through it

What is the function of the objective lens?

• To magnify the image

• To focus the image

• To adjust the amount of light going into the specimen

• To hold up the microscope

If the eyepiece of a microscope is 10x and the selected objective lens is 4x, then the specimen being viewed will appear how much larger?

• 4x

• 10x

• 40x

• 400x

If the eyepiece of a microscope is 10x and the selected objective lens is 10x, then the specimen being viewed will appear how much larger?

• 4x

• 100x

• 40x

• 400x

If the eyepiece of a microscope is 10x and the selected objective lens is 40x, then the specimen being viewed will appear how much larger?

• 4x

• 100x

• 40x

• 400x

Cell theory states that...

• Every living thing is made up of cells

• Everything is made of multiple cells

• Cells are spontaneously created

• All animals are unicellular organisms

Cell theory states that...

• Cells carry out the functions needed to support life

• Specialized cells are a myth

• Cells are spontaneously created

• All bacteria are unicellular organisms

Cell theory states that...

• Cells come only from other living cells

• Specialized cells are a fake news

• Animals are always unicellular

• All bacteria are unicellular organisms