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8 In an osmosis experiment, four potato strips, each 5 cm in length, were left in salt solutions of different concentrations.
The table shows the lengths of the strips after 30 minutes.
Which salt solution was the most concentrated?
1 2 3 4 length of strips after salt solution
30 minutes
A 4.5 cm
B 4.8 cm
C 5.0 cm
D 5.3 cm
Q) Use this diagram, which shows a cross-section through a leaf, to answer questions 14 and 15.
14 Which cell type absorbs the most carbon dioxide during the day?
15 A leafy shoot is placed in a solution of red dye.
After 30 minutes, which part of a leaf from this shoot will contain the red dye?
16 The diagram shows cross-sections of three types of blood vessel (not drawn to the same scale).
What is the identity of the three vessels?
X Y Z
A
B
C
D artery capillary vein
A X
Respiration is a characteristic of living organisms.
(a) State three other characteristics of living organisms.
1. ......................................................................................................................................
2. ......................................................................................................................................
3. ..................................................................................................................................[3]
4 Fig. 4.1 shows a typical animal cell and a typical plant cell.
Fig. 4.1
(a) (i) Name the parts of the cells labelled A and B.
A ...............................................................................................................................
B ...........................................................................................................................[2]
(ii) Label on the diagram, with a letter C, another structure that occurs in both cells. [1]
(b) For each of the following types of cell, state one way in which it is different from the animal cell in Fig. 4.1. State the function of each
The table shows the lengths of the strips after 30 minutes.
Which salt solution was the most concentrated?
1 2 3 4 length of strips after salt solution
30 minutes
A 4.5 cm
B 4.8 cm
C 5.0 cm
D 5.3 cm
Q) Use this diagram, which shows a cross-section through a leaf, to answer questions 14 and 15.
14 Which cell type absorbs the most carbon dioxide during the day?
15 A leafy shoot is placed in a solution of red dye.
After 30 minutes, which part of a leaf from this shoot will contain the red dye?
16 The diagram shows cross-sections of three types of blood vessel (not drawn to the same scale).
What is the identity of the three vessels?
X Y Z
A
B
C
D artery capillary vein
A X
Respiration is a characteristic of living organisms.
(a) State three other characteristics of living organisms.
1. ......................................................................................................................................
2. ......................................................................................................................................
3. ..................................................................................................................................[3]
4 Fig. 4.1 shows a typical animal cell and a typical plant cell.
Fig. 4.1
(a) (i) Name the parts of the cells labelled A and B.
A ...............................................................................................................................
B ...........................................................................................................................[2]
(ii) Label on the diagram, with a letter C, another structure that occurs in both cells. [1]
(b) For each of the following types of cell, state one way in which it is different from the animal cell in Fig. 4.1. State the function of each