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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