🌊PAPER 35-Qns

 

PRESIDENT’S OFFICE

REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

MOROGORO MUNICIPAL COUNCIL

FORM THREE TERMINAL JOINT EXAMINATIONS

033 BIOLOGY – 1

TIME: 3HRS MAY-2023

INSTRUCTIONS

1. This paper consists of section A, B, and C with a total of fifteen (15) questions.

2. Answer all questions in section A and B and two (2) questions from section C of which question number 13 is compulsory.

3. Section A carries fifteen (15) marks, section B carries sixty (60) marks and section C carries twenty five (25) marks.

4. All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.

5. Cellular phones and any other unauthorized materials are not allowed in the examination room.

6. Write your Examination Number on every page of your answer sheet(s)

SECTION A(15 Marks)

Answer all questions in this section.

1. For each item (i)-(x), choose the correct answer from among the given alternatives and write its letter beside the item number in your answer sheet.

(i)A communicable disease which affects a large number of people in a short period of time at a given locality is referred as;

1. Epidemic

2. Pandemic

3. Sporadic

4. Endemic

(ii)Undigested and indigestible food materials are prepared for elimination during the digestion process in the body. Which part of the alimentary canal is

responsible for the process?

1. Liver

2. Large intestine

3. Stomach

4. Small intestine

(iii)Some waste products produced by the body are so toxic that when left to accumulate in the living, the body can cause death. Which among the following is the waste products produced by the lungs?

1. Urine

2. Urea

3. Carbon dioxide

4. Uric acid

(iv)An epidermal cell from the root was put in a hypertonic solution. After some time the cell changed its shape. Which process led to this condition?

1. Plasmolysis

2. Hydrolysis

3. Flaccid cation

4. De-plasmolysis.

(v)Digestion of protein is incomplete in the absence of an enzyme known as Trypsin enzyme. Which digestive secretion mainly contains Trypsin?

1. Hydrochloric Acid

2. Intestinal juices

3. Gastric juices

4. Pancreatic juices

(vi)When examining a cell from an unidentified organ of a mouse under a light microscope, a form three student found an organelle with infolding in the inner membrane. Which organelle is it?

1. Chloroplast

2. Mitochondrion

3. Nuclear

4. Cytoplasm

(vii) The brain is a delicate organ enclosed within a body structure called cranium. When you are about to fall, you resist and return to a normal position. Which

part of the brain controls this?

1. Thalamus

2. Hypothalamus

3. Cerebrum

4. Cerebellum

(viii) Hiccups can be stopped by increasing the concentration of carbon dioxide in the blood for a short time, either by holding the victim’s breath or by breathing into a paper bag. Why breathing into a paper bag and not a plastic bag?

1. Plastic bag cannot stop hiccups

2. Paper bags are capable of reflecting air while plastic bags cannot.

3. Plastic bags can block an air passage and cause suffocation.

4. Plastic bags are very tough compared to plastic bags.

(ix)Madam Kwela is always suffering from sudden, involuntary and painful contractions of single muscles in his right thigh. When she attempts strenuous exercise. What is the name of the condition she is suffering from?

1. Muscle antagonistic

2. Muscles structure

3. Thigh strenuous

4. Muscle Cramp

(x)Mr. Juakali is a taxi driver, on his way to his working station, he saw a little girl playing with used bandages, needles, gloves and cotton wools. What is the biological name of those waste materials?

1. Biodegradable wastes

2. Sludge wastes

3. Biohazardous wastes

4. Non-biodegradable wastes

i	ii	iii	iv	v	vi	vii	viii	ix	x

2. Match the phrases in List A with responses in List B by writing the letter of the correct response beside the item number in your answer sheet.

LIST A

LIST B

Movement of substances throughout the plant's body. The process by which solvent molecules move from a region of high solute concentration to a region of low solute concentration through a selectively permeable membrane. The process by which particles move from a region of high concentration to a region of low concentration. The tissue which transport manufactured food from the leaves to other plant's parts. An extended epidermal cell in plants which absorb water and mineral salts from the soil.

Capillary Translocation Plasmolysis Phloem Diffusion Xylem Root hair Turgor pressure. Osmosis Haemolysis

LIST A	i	ii	iii	iv	v
LIST B

SECTION B (60 Marks)

3. (a). State the meaning of hygiene and good manner.

(b). Hygiene is considered as one of the most important factors in maintaining good health. Name four principles of personal hygiene.

4. Maua picked a plant which had the following characteristics: fibrous root system, on a woody stem, and a vascular bundle without cambium.

1. Name the division and class to which the plant belongs.

2. State four (4) characteristics of the division to which the plant belongs.

5. Consider that you are a medical doctor and you have received a patient whose investigation has diagnosed Tuberculosis(TB). Suggest to the patient the cause, three (3) symptoms and two (2) control measures for the disease.

6. Malinda complains of having a painful burning sensation around the middle of her chest wherever she eats certain kinds of food. She also has a problem of passing out a very hard stool.

1. What are the possible digestive disorders she might be facing?

2. What advice should be given to her to alleviate the problem?

7. (a). Distinguish between Tendon and Ligament.

(b). Mr. Leonard needs to have a walk race, cannot use his skeleton only, muscles are needed to walk. Give any three (3) different types of muscles and where they are found in the body of Mr.Leonard.

8. Form three students were told to clean the bush which was near the school compound, suddenly one of the student known as Siyawezi got bitten by a snake, in a move to help her, another student known as Mtuutu fell down and his left leg dislocated, another student known as Moyomzuri was shocked and faint instantly. As a biologist,explain in order of preference who was supposed to be attended first, second and last, and give reasons why.

9. Morogoro Municipal council is facing a problem of overproduction of waste. Briefly Outline the solution to overcome the problem. (Any four (4) points).

10. “Animals cannot survive without moving from one place to another”. Justify this statement by giving three (3) points.

11. Briefly explain the ways through which communicable diseases are transmitted from one person to another. Give four (4) points.

12. Giving four (4) points explain how the natural environment supports the living things.

SECTION C (25 Marks)

Answer two (2) questions from this section

13. “Fungi promotes” yet creates disturbances in human life”. Explain five (5) ways on how fungi promote human life and two (2) ways on how fungi create disturbances in human life.

14. How is biological knowledge useful in real life situations? Basing on agricultural activities of economic development at individual, family and nation at large. Give four (4) points.

15. Accidents seem to become a very big problem to human life, leading to the loss of lives of many people including young and old generations. By using the knowledge you have acquired from biology, educate the community on how home and school accidents can be prevented. (Give six points)

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