MCQ SMAG - 3rd and 5th September

Which of these are in the correct order with respect to the pathway that air follows in the body while breathing?

• Nose -> Bronchi -> Larynx -> Alveoli
• Nose -> Trachea -> Bronchi -> Diaphragm
• Nose -> Trachea -> Bronchi -> Alveoli
• Nose -> Trachea -> Bronchioles -> Alveoli

During gas exchange, gas is exchanged between

• The arteries and veins
• the aveoli and cells
• the cells and capillaries

The function of the respiratory system is to

• Breath
• Respire
• expand the lungs

When breathing in

• the diaphragm contracts
• the intercostal muscles relax
• the ribs move downwards and outwards
• the diaphragm expands and moves down

Which of these organelles do red blood cells have?

• Mitochondria
• Nucleus
• Cytoplasm

Which of these are not components of blood?

• None of the above.
• Red blood cells
• White blood cells
• Haemoglobin
• Plasma

Oxygenated blood contains a red compound called __________

Gases diffuse into the leaves through a ___________.

• Palisade cell
• stoma
• Chloroplast

If the plant does not have enough magnesium

• it will stay small
• Leaves will be deformed
• Leaves will be yellow

Which is the independent variable in this case?

• Grain yield in tonnes per hectare
• Fertiliser used in kg per hectare