AnswersHVA 26-27 IM Biology ALab: Diffusion Across a Semi-permeable Membrane

Lab: Diffusion Across a Semi-permeable Membrane Answers

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1
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Which microscope uses a probe to map atoms on the surface of a specimen?

t
transmission electron microscope
c
compound light microscope
s
scanning electron microscope
s
scanning tunneling microscope
2
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Functions of Organelles

l
lysosome
v
vacuole
m
mitochondrion
r
ribosome
3

best

o
osmosis
d
diffusion
p
passive transport
a
active transport
4

Which two microscopes generate three-dimensional images?

s
scanning electron microscope and scanning tunneling microscope
t
transmission electron microscope and scanning electron microscope
s
scanning tunneling microscope and transmission electron microscope
c
compound light microscope and scanning electron microscope
5

Which is a function of the cell membrane?

p
performs photosynthesis
c
controls what enters and leaves the cell
p
produces proteins
p
provides energy to the cell
6

most likely

h
hypotonic
h
hypertonic
i
isotonic
o
osmotic
7

most

T
There would be no difference between the functioning of the cells because the chloroplasts are not essential cell structures.
T
The second cell would become larger because it would have fewer chloroplasts regulating its size and shape.
T
The second cell would shrink because it would not be able to store water and maintain cell shape.
T
The second cell would not be able to produce as much food because it could not capture very much sunlight.
8

According to the endosymbiotic theory, which cellular process was involved in the evolution of mitochondria and chloroplasts?

s
symbiosis
p
phagocytosis
e
endosymbiosis
p
photosynthesis
9

most

Question illustration
T
The contractions would increase.
T
The contractions would decrease.
T
The contractions would cease altogether.
T
The contractions would establish dynamic equilibrium.
10

Functions of Organelles

n
nucleus
e
endoplasmic reticulum
G
Golgi apparatus
l
lysosome
11

What is shown in the image?

Question illustration
p
prokaryote
e
eukaryote
c
chloroplast
m
mitochondrion
12

most

1
100x
5
500x
1
1,000x
5
5,000x
13

Which structure will form when a primitive cell engulfs an aerobic bacterium?

m
mitochondria
c
chloroplast
n
nucleus
c
cell membrane
14

Which homeostatic process is characterized by the diffusion of only water molecules?

a
active transport
o
osmosis
p
passive transport
d
dynamic equilibrium
15

A new multicellular organism has been discovered, and scientists want to study the organism’s cell structures, including organelles. Which microscope should they use?

s
scanning electron microscope
t
transmission electron microscope
c
compound light microscope
s
simple microscope

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