Biology Cell Life

Question 1

What is the cell theory?

Answer 1

All living things are made of cells, cells come from cells, and cells are the base unit of structure and foundation for living things.

Question 2

What is the main idea of the early microscope?

Answer 2

The invention of microscopes led to the discovery of cells. Microscopes show that cork consists of cells and that there are organisms present in pond water.

Question 3

What is a light microscope?

Answer 3

A microscope the passes light through a specimen. A specimen can be alive and the specimen is usually a cell. Light microscopes are the most commonly used in the school curriculum.

Question 4

What is an electron microscope

Answer 4

A microscope that uses an electron beam and are more powerful than light microscopes. The specimen MUST be dead.

Question 5

Transmission electron microscope

Answer 5

Samples must be thinly sliced, provides an internal view, and provides a 2D image.

Question 6

Scanning electron microscope

Answer 6

Produces a 3D image, the specimen can remain untouched, but computers have to add a false color.

Question 7

Prokaryote

Answer 7

Small, unicellular, no nucleus, with very few organelles, and usually bacteria.