LATIH TUBI

LATIH TUBI

BIOLOGI SPM 2007

JABATAN PELAJARAN KEDAH

MODUL 9TOPIC

:TRANSPORT

SUGGESTED ANSWERS

Paper 1 ( Objective items )

1. D6. B11. A16. D

2. C7. A12. D17. C

3. D8. A13. D18. A

4. D9. C14. B19. C

5. B10. D15. A20. B

Paper 2 ( Section A )

1.(a)(i) R : Pulmonary circulation

Description : Oxygenated blood will be pumped into the heart through the

pulmonary vein.Deoxygenated blood will be pumped out from the

heart to the lungs through the pulmonary artery.

(ii) S : Systemic circulation Description : Oxygenated blood from the lungs which enters the left atrium of

the heart is pumped into the left ventricle and is then pumped out of the heart via the aorta .

(b)

(c) An electronic gadget will give the first heartbeat to act as sino-atrial node and then spread to all the atrium muscle and then to the atrioventrical node until the whole heartbeats.

(d) (i)The rate of blood flow in X is higher than in Y because X pumps blood from the heart

to the whole body whereas Y returns blood to the heart .

(ii)Vigorous exercise will cause deficiency of oxygen.Hence , the heart will beat faster to increase the blood flow to carry more oxygen and supply to the cells.

2.(a)A vaccine is a preparation of weakened ,dead or non-virulent forms of a pathogen

that is not harmful to the person who receives it.(b) X : Artificial active immunity

Y : Artificial passive immunity

(c)X : To increase the production of antibodies as a prevention against future infection .

Y : To supply enough antibodies up to the level of immunity and able to destroy

pathogens quickly.

(d)

Individual XIndividual Y

1Long lasting or permanentShort lasting or temporary

2Slow responseImmediate response

(c) Artificial passive immunity .

An antiserum injection containing antibodies is given to the person to fight the pathogen quickly.immediate action must be taken to avoid the snake venom from spreading to the entire body .

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