Biology and Pathology Quiz

Which component of the microscope controls the amount of light passing through the specimen?

• Objective lens

• Condenser

• Diaphragm

• Coarse adjustment knob

Why do you always begin focusing with the lowest power objective?

• It provides the brightest image.

• It prevents eye strain.

• It gives the largest field of view, making the specimen easier to find.

• It increases magnification quickly.

When the slide is moved to the left on the stage, how does the image appear to move under the microscope?

• Left

• Right

• Up

• It doesn’t move

What happens to the field of view as total magnification increases?

• It increases

• It decreases

• It remains the same

• It inverts

A wet mount slide is advantageous over a dry mount because:

• It requires less sample preparation

• It allows observation of living or moving specimens

• It prevents water damage to the objective lens

• It produces permanent specimens

During which phase of mitosis do chromosomes align along the equatorial plate?

• Prophase

• Metaphase

• Anaphase

• Telophase

What is the function of the mitotic spindle?

• Synthesizes DNA

• Distributes chromosomes to daughter cells

• Forms the nuclear envelope

• Produces spindle fibers

The acetocarmine stain used in the onion root tip primarily highlights:

• Cytoplasm

• Cell walls

• Chromatin in the nucleus

• Plasma membrane

Cytokinesis differs between animal and plant cells because plant cells:

• Use a cleavage furrow

• Form a cell plate

• Skip cytokinesis

• Have centrioles

What ensures genetic continuity during mitosis?

• Crossing over

• Equal chromosome segregation

• Random assortment

• Mutation repair