BIO LAB 5

Lenses to look through to view the specimen

Upper part of the microscope containing oculars and rotating nose piece

Narrow, vertical part connecting the head and base. It may be straight or curved and supports the upper parts and provides a carrying handle

Revolving device located below the ocular lenses. It serves as an attachment for the objective lenses. The viewer can rotate the nose piece to change from one objective lens to another

Magnification 4x The shortest of the objective lenses, used to scan the whole slide.

Magnification 10x. Longer than the scanning lens and is used to view objects in greater detail.

Magnification 40x. Used to view an object at even greater detail.

Magnification 100x. Used in conjunction with immersion oil to view objects with the greatest magnification.

Keeps the specimen slide stationary while viewing.

Two knobs that allow the movement of the specimen slide on the stage while viewing

The flat platform connected to the arm and beneath the objective lenses, upon which the specimen slide is placed

A lens located just below the stage that concentrates light on the specimen. Best position is close to the stage.

Knob allowing the viewer to control the position of the condenser

A lever located beneath the condenser, regulates light passing through the condenser

2 knobs on either side of the microscope at the base of the arm. Usually the largest knobs on the arm. Turning them will raise and lower the stage

2 knobs usually located in the center of each coarse adjustment knob. Used for precision focusing. Raise and lower the stage in very small increments

A light within the base providing the light source for illumination of the specimen.

Dial that adjusts the light intensity allowed through the condenser on to the specimen

The supportive flat surface of the microscope that rests on the table

All the organelles plus the cytoplasm

Similarities of Prokaryote and Eukaryotic Cells

DIFFERENCES BETWEEN PROKARYOTE AND EUKARYOTIC CELLS

3 DOMAINS

6 KINGDOMS

LOVE EXTREME CONDITIONS

Once an object is in focus using the scanning lens; it will remain in coarse focus when the lenses are changed to higher power. DON'T HAVE TO REFOCUS

What you see when you look through the microscope.

Occular X Objective