THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL

033/1              BIOLOGY 1

(For Both School and Private Candidates)

Time: 3 Hours                          Wednesday, 01^stNovember 2017 a.m.

Instructions

1. This paper consists of sections A, B and C with a total of thirteen (13) questions.
2. Answer all questions in 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 in blue or black ink.
4. Calculators, cellular phones and any unauthorised materials are not allowed in the examination room.
5. Write your Examination Number on every page of your answer booklet(s).

SECTION A (20 Marks) 

Answer all questions in this section.

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

(i)  Goitre is a deficiency disease caused by lack of which element in the diet?

1.  Carbohydrate 
2. Iodine 
3. Vitamin E 
4. Vitamin C
5.  Protein.

(ii) Tongue rollers in genetics is an example of

1.  gametogenesis 
2. continuous variation 
3. swallowing 
4. lubricating food 
5. discontinuous variation.

(iii)Which food substance is investigated in the biuret test procedur?

1.  Carbohydrate 
2. Lipids 
3. Protein 
4. Starch 
5. Reducing sugar.

(iv) The product of anaerobic respiration process in animals is

1.  lactic acid   
2. carbondioxide  
3. alcohol
4. water  
5.  oxygen.

(v)  A phylum consisting of species with jointed appendages and exoskeleton is known as

1.  Chordata 
2. Anelida 
3. Arthropoda
4. Platyhelminthesis 
5. Nematoda.

(vi) Which part of the flower receives pollen grain during pollination?

1.  Petal 
2. Stigma 
3. Stamen 
4. Style 
5. Ovary.

(vii) A rapid growth in plants is mainly taking place in

1. leaves 
2. cambium
3. roots
4. shoots and root tips 
5. stem. 

(viii) Which of the following is NOT a component of First Aid Kit?

1. Razor blade 
2. Panadol 
3. Bandage 
4. Soap 
5. Microscope. 

(ix) Which disease spread rapidly as a result of poor waste disposal?

1. Anemia
2. AIDS
3. Cholera
4. Leukemia
5. Small pox.

(x) A voluntary muscle that is capable of relaxing continuously and do not fatigue easily is known as

1.  skeletal muscle
2. biceps
3. triceps
4. cardiac muscle
5. smooth muscle.