Name:_______________________
1
AS Level Chapter 1 Quiz - Cells/ Microscopy
Fig. 1.1 is an electron micrograph of part of a eukaryotic cell.
G
X
Y
mitochondrion
×47 000
Fig. 1.1
(a) State how it is possible to deduce that Fig. 1.1 is a transmission electron micrograph
and not a scanning electron micrograph.
...................................................................................................................................................
.............................................................................................................................................. [1]
(b) Both the Golgi body and the rough endoplasmic reticulum are part of the network of
membranes inside cells.
Outline structural features shown in Fig. 1.1 that identify G as the Golgi body and not the
rough endoplasmic reticulum.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [2]
(c) Calculate the actual diameter, X–Y, of the mitochondrion labelled in Fig. 1.1.
Write down the formula that you will use to make your calculation. Give your answer to the
nearest whole nanometre (nm).
formula
actual diameter = ............................... nm [2]
AS 1
CELL BIOLOGY
QUESTIONSHEET 6
The table below describes the structure and function of organelles in eukaryotic cells. Complete the table by
filling in the empty boxes A, B, C, D and E
Organelle
Structure/Feature
Function of feature
A
Nucleus
B
Nucleoli present
Inner membrane folded into
cristae
D
Vesicles containing
hydrolytic enzyme
Smooth endoplasmic
reticulum
Consists
of hattened
Consists of flattened
membrane-bound sacs
membrane- bound sacs
called cistennae
called cisternae
C
Breakdown of old organelles.
Cell lysis.
E
TOTAL / 5
Do not
write in
margin
AS 1
CELL BIOLOGY
Do not
write in
margin
QUESTIONSHEET 7
The table below refers to a bacterial cell, a liver cell and a palisade mesophyll cell and to the structures which
may be found inside them.
If a feature is present in the cell, place a tick (ü) in the appropriate box and if a feature is absent from the cell,
place a cross (×) in the appropriate box.
Feature
Bacterial cell
Liver cell
Palisade cell
Nuclear membrane
Vacuole
Cell wall
Microvilli
Chloroplasts
Mesosomes
Glycogen granules
TOTAL / 7
AS 1
Do not
write in
margin
CELL BIOLOGY
QUESTIONSHEET 10
The diagram below shows an electron micrograph of a cell.
A
B
E
C
D
F
(a) Name the parts labelled A, B, C, D, E and F.
A: ...............................................................................
D: ............................................................................
B: ...............................................................................
E: ............................................................................
C: ...............................................................................
F: ............................................................................
[6]
(b) What evidence can be seen in the diagram that suggests that the cell is:
(i)
metabolically active and involved in secretion of enzymes.
...........................................................................................................................................................................
...........................................................................................................................................................................
...........................................................................................................................................................................
[3]
(ii) involved in production or modification of lipids?
...........................................................................................................................................................................
[1]
TOTAL / 10
2
2
3
Which definition of the magnification of a drawing of a leaf is correct?
A
the actual size of the leaf multiplied by the magnification of the microscope
B
the measured difference in size between the leaf and a drawing of the leaf
C
the increase in size of the leaf when observed using a microscope
D
the size of the drawing of the leaf divided by the actual size of the leaf
The electron micrograph shows part of two cells.
W
X
Y
Which labelled features identify these cells as eukaryotic?
A
4
W, X and Y
B
W and X only
C
W only
D
X only
Plant cells are stained and viewed using a student microscope. The light source is natural light.
What could be clearly visible at u400 magnification?
A
cristae of mitochondria
B
grana of chloroplasts
C
nucleoli
D
ribosomes
5
A scientist used a blender to break open a sample of animal cells and release the organelles.
The extracted mixture was spun in a centrifuge at a low speed. The heaviest type of organelle
sank to the bottom of the centrifuge tube to form a solid pellet, pellet 1.
liquid above
pellet
solid pellet
The liquid above pellet 1 was poured into a clean centrifuge tube and spun at a higher speed. The
next heaviest organelle sank to the bottom to form a solid pellet, pellet 2.
The scientist repeated this procedure twice more to obtain pellet 3 and pellet 4, each containing a
single type of organelle.
What is the function of the type of organelle extracted in pellet 3?
A
digestion of old cell organelles
B
production of ATP by respiration
C
synthesis of mRNA
D synthesis of protein
1
Fig. 2.1 is a transmission electron micrograph of cells from a spinach leaf.
A
B
C
Fig. 2.1
(a) Name the organelles A, B and C.
A ...............................................................................................................................................
B ...............................................................................................................................................
C ...............................................................................................................................................
[3]
(b) List two cell structures that could be present in animal cells that are not present in plant leaf
cells.
1. ...............................................................................................................................................
2. ...............................................................................................................................................
[1]
1
Vibrio cholerae is a prokaryotic organism.
Fig. 1.1 shows the structure of a cell of V. cholerae.
capsule
A
B
C
D
E
F
G
3.0 μm
Fig. 1.1
(a) Calculate the magnification of Fig. 1.1.
Show your working and give your answer to the nearest whole number.
magnification × ..................... [2]
(b) Locate the structures in Fig. 1.1 that apply to each of the features shown in Table 1.1.
Complete Table 1.1 by writing the appropriate letter and the name of the structure.
You must only give one letter in each case. You may use each letter once, more than once or
not at all. The first answer has been completed for you.
Table 1.1
feature
provides motility
identity
F
name
flagellum
stores genetic information
partially permeable
composed of murein (peptidoglycan)
site of translation
[4]
2
Capillaries are known as exchange vessels. Substances are exchanged between blood and
tissue fluid as the blood flows through the capillaries.
Fig. 1.1 is an electron micrograph of a section through a capillary with two red blood cells.
A
X
Y
magnification × 5700
B
Fig. 1.1
(a) (i)
Name the cells labelled A and the structure labelled B.
A ...............................................................................................................................
B .......................................................................................................................... [2]
(ii)
Calculate the actual distance X – Y on Fig. 1.1.
Show your working and give your answer to the nearest micrometre (μm).
answer ........................................... μm [2]