BioKnowledgy Quick Quiz on Cell Ultrastructure (1.2)
[17 marks]
1.
Which of the following is a characteristic of organelles?
A.
They are only found in eukaryotic cells
B.
They are only found in prokaryotic cells
C.
They are sub-cellular structures
D.
They are all membrane bound
(Total 1 mark)
2.
When viewing an exocrine cell of the pancreas using a light microscope which structures would not be
visible?
I.
The rough endoplasmic reticulum (rER)
II.
Mitochondria
III.
Nucleus
IV.
80s ribosomes
A.
I only
B.
I and II only
C.
I and IV only
D.
IV only
(Total 1 mark)
3.
Which of the following structures are present in both plant and animal cells?
I.
Cell wall
II.
Chloroplast
III.
Mitochondrion
A.
I only
B.
I and II only
C.
I and III only
D.
III only
(Total 1 mark)
4.
In viewing an electron micrograph of a cell, ribosomes, pili and a single circular chromosome are observed.
What other structure is likely to be present?
A.
The rough endoplasmic reticulum (rER)
B.
Mitochondria
C.
A nuclear membrane
D.
A plasmid
(Total 1 mark)
5.
By what process do most bacteria divide?
A.
Mitosis
B.
Meiosis
C.
Conjugation
D.
Binary fission
(Total 1 mark)
6.
The electron micrograph below shows an image of a cell.
[Source: www.microbiology.umaryland.edu/images/bact_em.jpg]
(a)
Identify the structures labeled A and B in the electron micrograph above and state one function of each.
A:
Name .......Flagellum................................................................................................
Function .......used for movement of the cell......................................................................
B:
Name ..............Pili.........................................................................................
Function ..........join cells for dna transfer.............................................................................................(2)
(b)
Deduce which type of cell is shown in the diagram, giving reasons for your answer.
................the cell shown in the diagram is a prokaryote because it has features that be long to prokaryote cells
such as the flagella and the pili, and it aslo lacks key features of eukaryote cells like the
mitochondria.................................................................................................................... (2)
7.
(a)
Draw and label the ultrastructure of a pancreatic exocrine cell as seen when using an electron
microscope.(5)
(b)
State one function for each of the following organelles.
(i)
Ribosomes
.........site for protein synthesis..................................................................................................................
(ii)
Rough endoplasmic reticulum
...........produces proteins................................................................................................................
(iii)
Golgi apparatus
..............modifies, stores and packages proteins........................................................................
(3)