AS Level Biology A H020/01 Breadth in biology Thursday 25 May 2017 -
Afternoon
Study online at https://quizlet.com/_gfz5cz
1. Air moves in and out of human lungs through the C
trachea, which is lined with cells. The diagram below
shows a section containing these cells
Which of the following statements about tracheal cells
is correct?
A Cells X, Y and Z are all columnar epithelial cells.
B Cells X and Y move mucus and trapped bacteria
out of the trachea. C Cell X releases mucus into the
trachea.
D Cell Z is a goblet cell.
2. What are the two purines? Adenine and Guanine
3. 3 Which of the options, A to D, is a reason why plants D
require specialized transport tissue?
A to allow osmosis to take place
B because they all have a large surface area to volume
ratio
C to carry sucrose to their leaves
D to overcome the limitations of diffusion over large
distances
4. Many plants are adapted to the availability of water C
in their environment; one group of these plants is the
xerophytes. Which one of the following statements
correctly describes a xerophyte?
A Smooth cordgrass grows in highly saline marine es-
tuary environments.
B The water lily has aerenchyma tissue to allow the
movement of gases to submerged roots.
C The poison tree has leafless branches covered in
1/9
, AS Level Biology A H020/01 Breadth in biology Thursday 25 May 2017 -
Afternoon
Study online at https://quizlet.com/_gfz5cz
thorns to reduce water loss.
D Water lobelia completes its entire life cycle sub-
merged in shallow ponds
5. A standard method can be used to extract DNA from A
the nuclei of cells in kiwi fruit. The statements below
list some of the steps involved in this method.
Which statement is not correct?
A chop the kiwi fruit to break open cell membranes
B add detergent to dissolve nuclear membranes
C add protease to digest histone proteins
D pour ice cold ethanol onto filtrate to precipitate DNA
6. Which of the options, A to D, is a correct statement C
about polysaccharides of glucose?
A Cellulose microfibrils are formed by hydrogen bond-
ing between adjacent chains of α-glucose molecules
bonded with 1,4-glycosidic bonds.
B Amylose is a straight chain of α-glucose monomers
bound by 1,6-glycosidic bonds to allow for dense pack-
ing.
C Glycogen has a high proportion of 1,6-glycosidic
bonds to produce a highly branched molecule for rapid
release of α-glucose. D Amylopectin has a mixture of
1,4-glycosidic and 1,6-glycosidic bonds between β-glu-
cose molecules for rapid release of energy
7. Which of the options, A to D, is a correct statement C Hydrostatic pressure in
about tissue fluid? A Tissue fluid carries carbon dioxide the capillary causes tissue
to muscle cells. fluid formation from plas-
B Oncotic pressure in the capillary causes tissue fluid ma
2/9
Afternoon
Study online at https://quizlet.com/_gfz5cz
1. Air moves in and out of human lungs through the C
trachea, which is lined with cells. The diagram below
shows a section containing these cells
Which of the following statements about tracheal cells
is correct?
A Cells X, Y and Z are all columnar epithelial cells.
B Cells X and Y move mucus and trapped bacteria
out of the trachea. C Cell X releases mucus into the
trachea.
D Cell Z is a goblet cell.
2. What are the two purines? Adenine and Guanine
3. 3 Which of the options, A to D, is a reason why plants D
require specialized transport tissue?
A to allow osmosis to take place
B because they all have a large surface area to volume
ratio
C to carry sucrose to their leaves
D to overcome the limitations of diffusion over large
distances
4. Many plants are adapted to the availability of water C
in their environment; one group of these plants is the
xerophytes. Which one of the following statements
correctly describes a xerophyte?
A Smooth cordgrass grows in highly saline marine es-
tuary environments.
B The water lily has aerenchyma tissue to allow the
movement of gases to submerged roots.
C The poison tree has leafless branches covered in
1/9
, AS Level Biology A H020/01 Breadth in biology Thursday 25 May 2017 -
Afternoon
Study online at https://quizlet.com/_gfz5cz
thorns to reduce water loss.
D Water lobelia completes its entire life cycle sub-
merged in shallow ponds
5. A standard method can be used to extract DNA from A
the nuclei of cells in kiwi fruit. The statements below
list some of the steps involved in this method.
Which statement is not correct?
A chop the kiwi fruit to break open cell membranes
B add detergent to dissolve nuclear membranes
C add protease to digest histone proteins
D pour ice cold ethanol onto filtrate to precipitate DNA
6. Which of the options, A to D, is a correct statement C
about polysaccharides of glucose?
A Cellulose microfibrils are formed by hydrogen bond-
ing between adjacent chains of α-glucose molecules
bonded with 1,4-glycosidic bonds.
B Amylose is a straight chain of α-glucose monomers
bound by 1,6-glycosidic bonds to allow for dense pack-
ing.
C Glycogen has a high proportion of 1,6-glycosidic
bonds to produce a highly branched molecule for rapid
release of α-glucose. D Amylopectin has a mixture of
1,4-glycosidic and 1,6-glycosidic bonds between β-glu-
cose molecules for rapid release of energy
7. Which of the options, A to D, is a correct statement C Hydrostatic pressure in
about tissue fluid? A Tissue fluid carries carbon dioxide the capillary causes tissue
to muscle cells. fluid formation from plas-
B Oncotic pressure in the capillary causes tissue fluid ma
2/9
