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Biology WAEC Past Questions

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66
Deamination is the process during which
  • A. excess amino acid is broken down into ammonia and keto acid
  • B. fats and oil are converted into an emulsion for absorption
  • C. excess glucose is converted and store as glycogen in the liver
  • D. glycogen is reconverted into glucose through the action of glucagon
  • E. excess amino acid is converted into proteins
View Answer & Discuss (3) WAEC 1988
67

Which of the following statements on urine production is not correct?

  • A. Concentrated urine is produced under the control of antidiuretic hormone
  • B. The total volume of urine produced depends on the need for water excretion
  • C. if there is excess intake of water, dilute urine is expected
  • D. if there is a shortage of water in the body the volume of the urine produced is decreased
  • E. in the presence of antidiuretic hormone dilute urine is produced
View Answer & Discuss (7) WAEC 1988
68
The pigment in the malphigian layer responsible for skin colouration is known as
  • A. haemoglobin
  • B. haemocyanin
  • C. chlorocruorin
  • D. haemoerythrin
  • E. melanin
View Answer & Discuss (2) WAEC 1988
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69
Co-ordination is achieved in the body of mammals through the action of the
  • A. endocrine and nervous systems
  • B. skeletal and nervous systems
  • C. muscular and nervous systems
  • D. circulatory and nervous systems
  • E. skeletal, muscular and nervous system
View Answer & Discuss WAEC 1988
70
Which of the following statements is correct of hormones? Hormones are
  • A. secreted into the blood through ducts
  • B. secreted directly into the blood streem
  • C. inactive chemical substance in the blood stream
  • D. non-specific in their mode of action
  • E. secreted at the site of the needed organ
View Answer & Discuss (1) WAEC 1988
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