Four types of cell in the gas exchange system are listed. J alveolus epithelium cell K ciliated cell L goblet cell M smooth muscle cell The ticks (✔) in the table show specialised features of three of these types of cell. 1 many mitochondria (✔ for cell 1) 2 lots of endoplasmic reticulum (no tick for cell 2) 3 many Golgi bodies (✔ for cell 3) Which row correctly matches the specialised feature with the correct cell?

What can combine with the haem group of a haemoglobin molecule? 1 oxygen 2 carbon dioxide 3 carbon monoxide

Chronic obstructive pulmonary disease (COPD) includes bronchitis and emphysema. Which symptom is specific to emphysema?

Which statements about the formation of haemoglobinic acid are correct? 1 It is linked to the action of carbonic anhy…

Factor VIII can be made as a recombinant human protein.

Describe the biological species concept.

A student calibrated an eyepiece graticule using a stage micrometer. • Each division of the stage micrometer was 0.01…