Question 1
[Maximum number: 2]
The micrograph is an image of human cheek cells viewed with a light microscope.
Question 1(c)
(a)
The electron micrograph shows part of an animal cell.
Outline the functions of Y and Z in the cell.
[ 2 ]
IB Biology HL B2.2 Organelles and compartmentalization Question Bank
B2.2 Organelles and compartmentalization
- B2.2.1—Organelles as discrete subunits
- B2.2.2—Nucleus-cytoplasm separation
- B2.2.3—Advantages of compartmentalization
- B2.2.4 (HL)—Mitochondrion adaptations
- B2.2.5 (HL)—Chloroplast adaptations
- B2.2.6 (HL)—Nuclear membrane benefits
- B2.2.7 (HL)—Free ribosomes vs. rough ER
- B2.2.8 (HL)—Golgi apparatus
- B2.2.9 (HL)—Vesicles in cells
Question 3
[Maximum number: 1]
The image shows an electron micrograph of pancreatic exocrine cells.
What is the role of the vesicles shown in the micrograph?
A
To transport hormones between the rough endoplasmic reticulum and the Golgi apparatus
B
To store glycogen when blood glucose levels are high
C
To move enzymes out of the cell by exocytosis
D
To digest cellulose
Question 6
[Maximum number: 1]
Where are proteins synthesized by free ribosomes used?
A
Outside the cell after secretion
B
Within the nucleus
C
Within the lysosomes
D
Within the cytoplasm
Question 2
[Maximum number: 1]
The micrograph shows a cell from the root of an onion (Allium cepa) during mitosis.
Question 2(b)
(a)
State what is indicated by the presence of polysomes in a cell.
[ 1 ]
Question 12
In which image are polysomes visible? (The images do not have the same magnification)
Question 2
[Maximum number: 1]
The electron micrograph shows part of a pancreas cell that secretes digestive enzymes.
Question 2(c)
(a)
State the organelle where digestive enzymes are synthesised.
[ 1 ]
Question 2
[Maximum number: 1]
The following shows an electron micrograph of a liver cell.
Question 2(b)
(a)
The electron micrograph is a higher magnification of a liver cell.
[ 1 ]
Question 2(b)(ii)
(i)
State its main function.
[ 1 ]
Question 3
[Maximum number: 2]
The electron micrograph shows part of a cell in the pituitary gland of a rat. Ribosomes appear as dark granules. Some of the ribosomes are arranged in a linear array and some are in circles. The diagram shows how the ribosomes in a circular array are connected.
Question 3(a)
(a)
On the electron micrograph, label
[ 2 ]
Question 3(a)(i)
(i)
On the electron micrograph, label the rough endoplasmic reticulum.
[ 1 ]
Question 3(a)(ii)
(ii)
On the electron micrograph, label a polysome.
[ 1 ]
Question 2
[Maximum number: 1]
The diagram shows how vesicles are used to transport materials in a cell.
Question 2(a)
Question 2(a)(i)
(a)
(i)
State the name of organelle A .
[ 1 ]
Question 2
Question 2(c)
(a)
Outline what happens to the proteins produced by free and bound ribosomes.
Free ribosomes:
Bound ribosomes:
[ 2 ]