Life Science Trimester 1 Exam Review 2024

Front

What is the diaphragm in a microscope?

Back

The diaphragm is a part of a microscope that controls the amount of light reaching the specimen.

Front

How do you calculate total magnification in a microscope?

Back

Total magnification = Eyepiece magnification x Objective lens magnification. For example, 10X (eyepiece) x 20X (objective) = 200X total magnification.

Front

What are the three main components of the cell theory?

Back

1. Cells are the basic unit of structure and function in all living things. 2. All living things are composed of cells. 3. All cells arise from pre-existing cells.

Front

What does 'high concentration area' mean in biology?

Back

A high concentration area refers to a region where particles are tightly packed together.

Front

Who is credited with organizing the Periodic Table of Elements?

Back

Dmitri Mendeleev is credited with organizing the Periodic Table.

Front

What is the function of stage clips on a microscope?

Back

Stage clips hold the slide in place on the stage of the microscope.

Front

What is the role of the light source in a microscope?

Back

The light source illuminates the specimen, making it easier to see under the microscope.

Front

What is an objective lens in a microscope?

Back

An objective lens is a lens that is closest to the specimen and is used to magnify the image.

Front

What is the difference between a prokaryotic cell and a eukaryotic cell?

Back

Prokaryotic cells do not have a nucleus or membrane-bound organelles, while eukaryotic cells do.

Front

What is diffusion in biological terms?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.