Class IX

Lactose can also be called as
  1. milk sugar
  2. malt sugar
  3. cane sugar
  4. grape sugar
Organic catalysts called enzymes are mainly made up of
  1. Carbohydrates
  2. fats
  3. Potassium
  4. Proteins
Carboxyhaemoglobin is formed if
  1. CO2 is allowed to mix with hemoglobin
  2. if CO is allowed to react with hemoglobin
  3. if long term exposure to lead and lead poisoning occurs
  4. if carbon is allowed to react with hemoglobin
Activities of living organisms can be recorded through
  1. observation, experimentation
  2. capturing, isolation
  3. experiment, locomotion
  4. all of these
Prothrombin helps in
  1. fighting against diseases
  2. giving red color to blood
  3. giving red color to blood
  4. hormones regulations
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