Investigations (Grade 11 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What happens when a glowing splint is placed in oxygen?
What happens when a glowing splint is placed in oxygen?
It reignites or burns more brightly
What colour change occurs in lime water when carbon dioxide is bubbled through it?
What colour change occurs in lime water when carbon dioxide is bubbled through it?
Clear to milky or cloudy
What does Investigation 1 with germinating seeds aim to demonstrate?
What does Investigation 1 with germinating seeds aim to demonstrate?
Oxygen is consumed during respiration
In Investigation 1, what happens to the glowing splint in the tube with living germinating seeds?
In Investigation 1, what happens to the glowing splint in the tube with living germinating seeds?
It goes out immediately
Why are dead seeds used as a control in Investigation 1?
Why are dead seeds used as a control in Investigation 1?
To prove respiration consumes oxygen
In Investigation 2, what is the function of container A with sodium hydroxide?
In Investigation 2, what is the function of container A with sodium hydroxide?
Remove CO₂ from incoming air
What is the purpose of the paraffin layer in Investigation 3?
What is the purpose of the paraffin layer in Investigation 3?
Prevent oxygen entering the mixture
Why is the yeast apparatus placed in a warm water bath in Investigation 3?
Why is the yeast apparatus placed in a warm water bath in Investigation 3?
Yeast grows more actively in warmth
What is the key difference in oxygen requirement between aerobic and anaerobic respiration?
What is the key difference in oxygen requirement between aerobic and anaerobic respiration?
Aerobic requires O₂, anaerobic doesn't
Where does anaerobic respiration occur in the cell?
Where does anaerobic respiration occur in the cell?
Cytoplasm only