Biology AQA AS level 7401/1 Paper 1- Questions and
Answers 100% Solved
Cells constantly hydrolyse ATP to provide energy. Describe how ATP is resynthesised in cells.
Correct Ans-- From ADP and phosphate;
- By ATP synthase;
- During respiration/photosynthesis;
Give two ways in which the hydrolysis of ATP is used in cells. Correct Ans-- To provide
energy for other reactions/named process;
- To add phosphate to other substances and make them more reactive/change their shape
What is the evidence from Figure 2 that a scanning electron microscope was used to take this
photograph? Correct Ans-(Can see) 3D image
name the part of the mitochondrion labelled X in Figure 2 Correct Ans-Crista/cristae
, Biology AQA AS level 7401/1 Paper 1- Questions and
Answers 100% Solved
Y is a protein. One function of Y is to transport cellulose molecules across the phospholipid
bilayer.
Using information from Figure 3, describe the other function of Y. Correct Ans-- (Y is) an
enzyme/has active site/forms ES complex;
- That makes cellulose
In the cell wall, bonds hold the cellulose molecules together side by side. Name that bond
Correct Ans-Hydrogen
• The human cell then makes a complementary strand to the HIV DNA.
The complementary strand is made in the same way as a new complementary
strand is made during semi-conservative replication of human DNA. Describe how the
complementary strand of HIV DNA is made. Correct Ans-- there are complementary
nucleotides/bases pair
- DNA polymerase used
Answers 100% Solved
Cells constantly hydrolyse ATP to provide energy. Describe how ATP is resynthesised in cells.
Correct Ans-- From ADP and phosphate;
- By ATP synthase;
- During respiration/photosynthesis;
Give two ways in which the hydrolysis of ATP is used in cells. Correct Ans-- To provide
energy for other reactions/named process;
- To add phosphate to other substances and make them more reactive/change their shape
What is the evidence from Figure 2 that a scanning electron microscope was used to take this
photograph? Correct Ans-(Can see) 3D image
name the part of the mitochondrion labelled X in Figure 2 Correct Ans-Crista/cristae
, Biology AQA AS level 7401/1 Paper 1- Questions and
Answers 100% Solved
Y is a protein. One function of Y is to transport cellulose molecules across the phospholipid
bilayer.
Using information from Figure 3, describe the other function of Y. Correct Ans-- (Y is) an
enzyme/has active site/forms ES complex;
- That makes cellulose
In the cell wall, bonds hold the cellulose molecules together side by side. Name that bond
Correct Ans-Hydrogen
• The human cell then makes a complementary strand to the HIV DNA.
The complementary strand is made in the same way as a new complementary
strand is made during semi-conservative replication of human DNA. Describe how the
complementary strand of HIV DNA is made. Correct Ans-- there are complementary
nucleotides/bases pair
- DNA polymerase used
