◈ Oracle PrepSign Up Free
O-LevelBiologyTransport in Humans5090/11 · May/June 2011 · Q201 Mark

What is not an excretory product of mammals?

Acarbon dioxide in expired air
Bundigested food in faeces
Curea in sweat
Durea in urine

✓ Correct answer

B: undigested food in faeces

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Transport in Humans and see which topics are most likely to come up next.

Sign up free →

About this question

Topic
Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2011 Paper 1 Variant 1, question 20.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Biology questions

Transport in HumansMay/June 20121m

Which is a difference between plasma and tissue fluid?

Transport in HumansMay/June 20131m

After muscular exercise, which blood vessel carries the lowest concentration of carbon dioxide?

Transport in HumansMay/June 20131m

Two hours after eating a meal, which vessel contains blood with the highest concentration of glucose?

Coordination & ResponseMay/June 20161m

Which process is not a result of negative feedback?

Coordination & ResponseMay/June 20161m

What is an example of a reflex arc?

Coordination & ResponseMay/June 20161m

Which structures cover the pupil at the front of a human eye?

← Browse all past-paper questions

© 2026 Oracle Prep