BIOS251 Week 2 Pre-Lab Assignment Latest

Week 2 Pre-Lab Assignment

Question 1

When observing a slide under the microscope, one should always use the ____________ lens objective first.

Low dry (10x)

High dry (40x)

Scanning (4x)

Oil emersion (100x)

Rheostat

Question 2

How will happen to your body cells if you consume excess amounts of salt water?

Your body cells will swell

Your body cells will shrink

Your body cells will uptake more salt

Your body cells will proliferate

Nothing will happen to your body cells

Question 3

Which structure of the microscope should never be used when observing a specimen under the high dry (40x) lens objective?

Condenser

Mechanical stage adjuster

Fine adjustment knob

Iris

Course adjustment knob

Question 4

Which mitotic phase is characterized by the separation of the sister chromatids?

Prophase

Telophase

Metaphase

Anaphase

Prometaphase

Question 5

Which of the following molecules will easily diffuse across the plasma membrane? (Note: more than one answer may be correct.)

Oxygen

Small, nonpolar molecules

Steroid hormones

Protein hormones

Glucose