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Biology Past Questions and Answers

Waec Biology Questions

Question 206:

The conditions that ensure successful exchange of gases in multicellular organisms include the following except

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A Concentration gradient across the respiratory surface
B Presence of thin membrane as the respiratory surface
C Last transportation of absorbed gases
D Presence of large surface area of the respiratory organ
E Presence of small, dry surface area of the respiratory organ

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Question 207:

The conditions that ensure successful exchange of gases in multicellular organisms include the following except

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A Concentration gradient across the respiratory surface
B Presence of thin membrane as the respiratory surface
C Last transportation of absorbed gases
D Presence of larg surface area of the respiratory organ
E Presence of small, dry surface area of the respiratory organ

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Question 208:

The respiratory organ found in the cockroach is the

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A Air sac
B Trachea
C Lung book
D Lung
E Gill

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Question 209:

Which of the following organs is associated with deamination of proteins?

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A Lung
B Stomach
C Kidney
D Liver
E Heart

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Question 210:

Ultrafiltration in the kidney takes place in the

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A Loop of Henle
B Renal vein
C Bowman's capsule
D Pelvis
E Pyramid

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