NAME …………………………………………………………………ADM NO………………………
SCHOOL…………………………………………………………… CLASS………….
DATE…………………………….
231/1
BIOLOGY
PAPER 1
JANUARY 2021
TIME: 2 HOURS
EAGLE JOINT POST-MOCK EXAMINATION – 2021
Kenya Certificate of Secondary Education (K.C.S.E)
231/1
BIOLOGY
PAPER 1
JANUARY 2021
TIME: 2 HOURS
INSTRUCTIONS TO CANDIDATES
Write your Name and Index number in the spaces provided above
Sign and write the date of examination in the spaces provided. Answer all the questions in the spaces
provided.
Additional pages must not be inserted.
This paper consists of 8 printed pages. Candidates should check the question paper to ascertain all
the pages are printed as indicated and no questions are missing.
For examiners use only
Question Maximum score Candidates score
1-31 80
Eagle-Joint Post-Mock Exam 1 231/1 Biology Turnover
, Answer all questions in this section in the spaces provided
1. Name the antigens that determine human blood groups. (2 mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
2. Name the causative agent of the following diseases.
a) Cholera. (1 rnk)
………………………………………………………………………………………………………
………………………………………………………………………………………………………
b) Amoebic dysentery. (1 mk)
………………………………………………………………………………………………………
………………………………………………………………………………………………………
3. What is a sex-linked gene? (1 mk)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
4. The equation below represents a process that take place in plants and animals
C6H12O6 + 6O2 6CO 2 + 6H2O
(a) Name the process. (1 mrk)
………………………………………………………………………………………………………
(b) State two requirements necessary for the process (a) above to process at maximum rate.
(2 mrks)
………………………………………………………………………………………………………
……………………..………………………………………………………………………………
(a) What is the role of Cristae in the process above? (1 mrk)
………………………………………………………………………………………………………
5. Under similar conditions, a man requires more energy than a woman of the same age. Explain.
(2 mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
6. State two uses of a pair of forceps in biology. (2mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
7. State three differences between tropism and Nastism. (3mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
Eagle-Joint Post-Mock Exam 2 231/1 Biology Turnover
SCHOOL…………………………………………………………… CLASS………….
DATE…………………………….
231/1
BIOLOGY
PAPER 1
JANUARY 2021
TIME: 2 HOURS
EAGLE JOINT POST-MOCK EXAMINATION – 2021
Kenya Certificate of Secondary Education (K.C.S.E)
231/1
BIOLOGY
PAPER 1
JANUARY 2021
TIME: 2 HOURS
INSTRUCTIONS TO CANDIDATES
Write your Name and Index number in the spaces provided above
Sign and write the date of examination in the spaces provided. Answer all the questions in the spaces
provided.
Additional pages must not be inserted.
This paper consists of 8 printed pages. Candidates should check the question paper to ascertain all
the pages are printed as indicated and no questions are missing.
For examiners use only
Question Maximum score Candidates score
1-31 80
Eagle-Joint Post-Mock Exam 1 231/1 Biology Turnover
, Answer all questions in this section in the spaces provided
1. Name the antigens that determine human blood groups. (2 mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
2. Name the causative agent of the following diseases.
a) Cholera. (1 rnk)
………………………………………………………………………………………………………
………………………………………………………………………………………………………
b) Amoebic dysentery. (1 mk)
………………………………………………………………………………………………………
………………………………………………………………………………………………………
3. What is a sex-linked gene? (1 mk)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
4. The equation below represents a process that take place in plants and animals
C6H12O6 + 6O2 6CO 2 + 6H2O
(a) Name the process. (1 mrk)
………………………………………………………………………………………………………
(b) State two requirements necessary for the process (a) above to process at maximum rate.
(2 mrks)
………………………………………………………………………………………………………
……………………..………………………………………………………………………………
(a) What is the role of Cristae in the process above? (1 mrk)
………………………………………………………………………………………………………
5. Under similar conditions, a man requires more energy than a woman of the same age. Explain.
(2 mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
6. State two uses of a pair of forceps in biology. (2mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
7. State three differences between tropism and Nastism. (3mks)
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
Eagle-Joint Post-Mock Exam 2 231/1 Biology Turnover
