SECTION A
You should spend no more than 20 minutes on this section.
Write your answer in the box provided.
Answer all questions.
1 What is the purpose of lactate fermentation in animal cells?
A To provide reduced NAD for glycolysis
B To provide reduced NADP for the isomerisation of glucose
C To provide FAD for the citric acid cycle
D To provide NAD for the breakdown of glucose
Your answer
[1]
2 The diagram below shows the nucleus of cell undergoing division.
Which row, A to D, correctly describes the division of the cell in the diagram?
type of division stage of division number of chromatids
A mitosis metaphase 8
B meiosis metaphase II 4
C mitosis anaphase 4
D meiosis metaphase I 8
Your answer
[1]
, Turn over
3 Which of the following substances is not filtered out of the glomerulus during
ultrafiltration?
A Vitamin B12
B Myoglobin
C Cl- ions
D Urea
Your answer
[1]
4 Which of the following glands can be described as being part of the endocrine system?
A Adrenal
B Salivary
C Lacrimal (tear gland)
D Sudoriporous (sweat gland)
Your answer
[1]
5 Which statement about tRNA molecules is true?
A There are hydrogen bonds between the nitrogenous bases
B Their anticodon has the same bases as the codon on the antisense strand of DNA
C They contain hexose sugars in their sugar-phosphate backbone
D There is only one particular tRNA molecule for each amino acid
, Your answer
[1]
Turn over
6 The karyotype of the grey wolf, Canis lupus, contains 78 chromosomes.
Which row, A to D, correctly identifies the number of chromosomes in each type of cell?
Spermatozoon Erythrocyte Hepatocyte
A 39 0 156
B 0 78 39
C 39 0 78
D 78 78 78
Your answer
[1]
7 What is the purpose of tannins in plant leaves?
A They are volatile organic compounds that are released in times of abiotic stress
B They act as accessory pigments in photosystems
C They block plasmodesmata between adjacent mesophyll cells
D They make the leaves taste bitter
Your answer [1]
You should spend no more than 20 minutes on this section.
Write your answer in the box provided.
Answer all questions.
1 What is the purpose of lactate fermentation in animal cells?
A To provide reduced NAD for glycolysis
B To provide reduced NADP for the isomerisation of glucose
C To provide FAD for the citric acid cycle
D To provide NAD for the breakdown of glucose
Your answer
[1]
2 The diagram below shows the nucleus of cell undergoing division.
Which row, A to D, correctly describes the division of the cell in the diagram?
type of division stage of division number of chromatids
A mitosis metaphase 8
B meiosis metaphase II 4
C mitosis anaphase 4
D meiosis metaphase I 8
Your answer
[1]
, Turn over
3 Which of the following substances is not filtered out of the glomerulus during
ultrafiltration?
A Vitamin B12
B Myoglobin
C Cl- ions
D Urea
Your answer
[1]
4 Which of the following glands can be described as being part of the endocrine system?
A Adrenal
B Salivary
C Lacrimal (tear gland)
D Sudoriporous (sweat gland)
Your answer
[1]
5 Which statement about tRNA molecules is true?
A There are hydrogen bonds between the nitrogenous bases
B Their anticodon has the same bases as the codon on the antisense strand of DNA
C They contain hexose sugars in their sugar-phosphate backbone
D There is only one particular tRNA molecule for each amino acid
, Your answer
[1]
Turn over
6 The karyotype of the grey wolf, Canis lupus, contains 78 chromosomes.
Which row, A to D, correctly identifies the number of chromosomes in each type of cell?
Spermatozoon Erythrocyte Hepatocyte
A 39 0 156
B 0 78 39
C 39 0 78
D 78 78 78
Your answer
[1]
7 What is the purpose of tannins in plant leaves?
A They are volatile organic compounds that are released in times of abiotic stress
B They act as accessory pigments in photosystems
C They block plasmodesmata between adjacent mesophyll cells
D They make the leaves taste bitter
Your answer [1]
