Experiment 1: Virtual Magni?cation Exercise

Post-Lab Questions: Answer all questions using complete sentences. BOLD your responses to make them easier for me to read! J Thanks.

1. At what magnification do you first notice the ragweed pollen?
2. Which is bigger, a rhinovirus or E. coli?
3. Based on the magnification, how many of the E. coli can fit into the same space as the head of a pin?
4. About how many red blood cells could fit across the diameter of a human hair (again, look at the magnification scale)?

Experiment 2: Virtual Microscope

Post-Lab Questions: Answer all questions using complete sentences. BOLD your responses to make them easier for me to read! J Thanks.

1. What is the first step normally taken when you look through the ocular lenses?
2. What is the highest objective lens you can use to see the entire letter e?
3. The nuclei (the structure inside a cell that contains DNA) of the cheek cells have been stained using a special dye so that they appear purple. What shape are they?
4. At high magnification, you may notice that not all of the nuclei in the onion root tip slide appear as the shape you described in the question above. What do they look like?
5.  After completing the m1 exercise in the "Try this" section, how tall is the letter e?