Worksheetstopic 9
Total questions: 20
Worksheet time: 10mins
What parts of the microscope should the student use to bring the image into focus?
A and F
B and E
C and D
D and F
The student is preparing two strips of paper for a chromatography activity. After adding a dot of the ink from the marker pen to the line on the paper on the right, the next step should be to place the strips in a beaker of solvent with the solvent level.
between the bottom of the paper and the dot of ink
even with the dot of ink on the paper
just below the bottom edge of the paper
slightly above the dot of ink on the paper
Which technique could be used to make the structures in the cells more visible when using a compound light microscope?
paper chromatography
staining
electrophoresis
gene manipulation
Which procedure is represented in the diagram?
adding distilled water to the top of a cover glass on a slide
making an artificial cell
adding salt solution to a specimen under the cover glass
making a thin sample to prepare a slide of red onion cells
The part of the microscope that should be adjusted in order to better view the onion cells while using high power is
A
B
C
D
Paper chromatography is a method used in
comparing the shapes of plant leaves
separating mixtures of plant pigments
comparing habitats of different plants
separating individual DNA fragments of plants
In the experimental setup below, which substance would be used to prove that the gas produced by the yeast in the vacuum bottle could change the pH of the liquid in the flask?
an indicator
a chemical messenger
an enzyme
a salt solution
A compound light microscope under high power can display cell organelles. If a cheek cell where stained with iodine, which organelle would be visible?
cell wall
ribosome
chloroplast
nucleolus
This setup is part of the technique known as
electrophoresis
biological staining
dissection
chromatography
When heating a liquid in a test tube, a student should always
wear safety goggles
use Benedict’s solution
stopper the test tube
record the temperature of the liquid
In order to make an image brighter, which labeled part of the microscope would most likely be adjusted?
A
B
C
D
What is the total magnification of this microscope using the high-power objective lens?
43x
50x
100x
430x
How much water should be added to the graduated cylinder shown below to increase the volume to 15 milliliters?
11 mL
10 mL
3 mL
4 mL
Compared to the fragments at the top of the gel, the fragments at the lower end are
larger, and move slower
larger, and move faster
smaller, and move faster
smaller, and move slower
What is the approximate length of the specimen in millimeters?
25 mm
30 mm
35 mm
40 mm
When he switched to high power, the organism was no longer visible. This most likely happened because switching to high power made the
field too bright to see the organism
image too small to be seen
area of the slide being viewed smaller
fine-adjustment knob no longer functional
Which lab procedure can be done to find molecular evidence for relationships between these Antarctic marine organisms?
Compare slides of cell organelles.
Examine fossils and ocean sediments.
Set up and perform gel electrophoresis.
Use a dichotomous key and test for pH.
An estimated length of the wingspan could be
3 centimeters
3 grams
3 milliliters
3 kilometers
In which diagram do we not see a meniscus?
A compound light microscope under high power can display cell organelles. If a cheek cell where stained with iodine, which organelle would be visible?
cell wall
ribosome
chloroplast
nucleus
