THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL

CERTIFICATE OF SECONDARY EDUCATION EXAMINATION

033/1 BIOLOGY   1

(For School Candidates Only)

TIME: 3 HOURS Thursday, 07 ^th  November 2013 a.m.

INSTRUCTIONS

1. This paper consists of three sections A, B and C.

2. Answer all questions from sections A and B and one (1) question from section C.

3. Except for diagrams that must be drawn in pencil, all writing should be done using a blue or black pen.

4. Calculators and cellular phones are not allowed in the examination room.

5. Write your Examination Number on every page of your answer booklet(s).

SECTION A (20 MARKS)

1. For each of the items (i) – (x), choose the correct answer from among the given alternatives and write its letter beside the item number.

(i) Animals which are able to maintain fairly constant body temperature are described as

1.  poikilothermic
2.  hydrostatic
3.  sympathetic
4.  symbiotic
5.  homoiothermic

(ii) Night blindness in the human body is avoided by eating

1.  oranges
2.  carrot
3.  red
4.  green vegetables meat
5.  chicken

(iii) A blood vessel which conveys deoxygenated blood away from the heart is called

1.  capillaries
2.  artery
3.  vein
4.  pulmonary vein
5.  pulmonary artery

(iv) The function of cones in the human eye is to

1.  sense light
2.  sense colour
3.  cover the eye
4.  reflect light
5.  protect the eye

(v) A term used to identify an individual animal having both male and female sex organs is

1.  unisexual
2.  hermaphrodite
3.  asexual
4.  dioecious
5.  monoecious

(vi) Which of the following structures is a site of respiration?

1.  Chloroplast
2.  Ribosome
3.  Nuclear
4.  Nucleic acid
5.  Mitochondrion

(vii) The structures found in bacteria are A plasmid, flagella and cilia

1.  cytoplasm, cilia and pastids
2.  cell wall, plasmid and flagella
3.  cell membrane,
4.  flagella and hairs
5.  plasmid, capsule and cilia

(viii) The by products in the photosynthesis process are

1.  carbohydrate and water
2.  carbon dioxide and oxygen
3.  oxygen and water
4.  carbohydrate and carbon dioxide
5.  oxygen and air

(ix) The factors which contribute to the spread of dental cavities in human being include

1.  prolonged exposure to cold water
2.  prolonged exposure
3.  prolonged exposure to warm water
4.  prolonged exposure to bitter food to hard water
5.  prolonged exposure to sugary foodstuff

(x) The main feature observed in prokaryotic is that they

1.  have genetic materials not enclosed by nuclear membrane
2.  have genetic material enclosed by nuclear membrane
3.  have no genetic material in their nuclear
4.  have more than one nucleic acid in their nuclear
5.  have genetic material enclosed by two membranes