FOCUSING A COMPOUND MICROSCOPE

After focusing to LPO, you were asked by your teacher to shift to HPO (high power objective)

but the view of the specimen is blurred. What part are you going to manipulate for the specimen to

have a sharper focus?

• Mirror

• Inclination Joint

• Stage clips

• Fine Adjustment Knob

Forceps are used to hold and fix the specimen on the glass slide. What household material can

be used if you don’t have any forceps?

• Tong

• Tweezers

• Fork

• Spoon

The formula of total magnification (MT) is the product of

magnification of the eyepiece (ME) and

magnification of the objective lenses (MO) like LPO, MPO, or HPO. Which equation represents the

statement?

• MT = ME X MO

• MT = ME + MO

• MT = ME- MO

• MT = ME/MO

In moving the glass slide to the left side, what direction will you observe the specimen under the microscope?

• It is still to the left side.

• It goes to the right side (opposite).

• It goes to the north side (above).

• It goes to the south side (below).

The following materials are breakable like glass slides, cover slips, lenses, and mirrors. Which

scientific term describes materials that are easily broken?

• Malleable

• Fragile

• Ductile

• Flexible

Staining agents like iodine make the parts of the specimen more visible. What natural indicator

can you use if you run out iodine?

• Amplaya

• Ginger

• Carrots

• Purple Camote

. __________ refers to a sample of a plant, animal or microorganism

placed in a glass slide,

water as its magnifying liquid and covered by a very thin cover slip.

• Wet Mount Slide

• Dry Mount Slide

• Iodine Solution

• Glass Slide

.The onion bulb skin is the best plant specimen to be viewed under the microscope because of its

observable properties like _____ and _________.

• small, thin

• small, thick

• big, thin

• big, thick

Under the low power objective, the small letter “e” that is placed in an upright position on the glass

slide is seen as magnified and inverted. This is best represented in the image __________.

• 
• 
• 
• 

Under the high-power objective, the small letter “e” as seen under the microscope is inverted

and ________ in the magnification view.

• air bubbles are seen

• smaller

• only portions are seen

• just the same under the LPO