THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL OF TANZANIA

CERTIFICATE OF SECONDARY EDUCATION EXAMINATION

033/1            BIOLOGY 1

(For Both School and Private Candidates)

Time: 3 Hours                                                  Tuesday, 05^th November 2019 a.m.

Instructions

1. This paper consists of sections A, B and C with a total of fifteen (15) questions.
2. Answer all the questions in sections A and B and two (2) questions from section C of which question 13 is compulsory.
3. All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
4. 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 (15 Marks)

Answer all questions in this section.

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 in the answer booklet provided.

(i) What is the aim of doing experiment when conducting a scientific investigation?

1.  Identifying a problem 
2.  Finding a solution 
3.  Testing a hypothesis 
4.  Gathering information 
5.  Recording results

(ii) Why is it advised to build an incinerator in every hospital and health centre? 

1. for collecting wastes. 
2. for disposing gaseous wastes. 
3. for disposing liquid wastes. 
4. for burning hazardous wastes. 
5. for disposing plastic wastes.

(iii) Mrs. Jumas child has protruding stomach and swollen lower limbs. What type of food should she give to her child to overcome the problem?

1. Starch  
2. Lipids
3. Proteins                        
4. Minerals
5. Vitamins

(iv) In the food chain: Grass  Lion. A lion is:

1. a primary consumer.   
2. a secondary consumer.
3. a producer. 
4. a tertiary consumer. 
5. a decomposer.

(v) Water from the roots of flowering plants is transported up to the plant by different forces. Which of the following forces initiates and raises water to the least height? 

1. Root pressure 
2. Transpiration pull
3. Cohesion forces                     
4. Adhesion forces
5. Capillarity

(vi) A patient has been diagnosed with low level of blood sugar. Which hormone would you recommend to regulate the victims sugar? 

1. Insulin 
2. Glucagon
3. Antidiuretic 
4. Aldosterone 
5. Testosterone

(vii) Which one is the feature of aging in human beings?

1. Shorter reaction times 
2. Strong bones
3. Strong muscles                       
4. Body increases in size
5. Wrinkling of the skin

(viii) What is the role of node of ranvier in a neurone?

1. To transmit the impulses away from the cell body.
2. To insulate the axon and speed up transmission of impulses.
3. To transmit nerve impulses from one nerve to another.
4. To speed up the transmission of nerve impulses.
5.  To transmit the nerve impulses towards the cell body.

(ix) What is variation as applied to genetics?

1. Differences among individuals of the related species.
2. Differences among individuals of the same species.
3. Differences among individuals of different species.
4.  Differences among individuals of unrelated species.
5.  Differences among individuals of the expected species.

(x) Which one is correct about Cosmozian theory of origin of life?

1.  Life was brought in this Earth from elsewhere.
2.  Life arose according to physical and chemical laws.
3.  Living organisms arose from non-living materials.
4.  The Earth and all the organisms on it were created by God.
5.  The planet Earth and all the organisms have always been there.