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Question 18N.1.SL.TZ0.10

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.1.SL.TZ0.10
Level SL Paper 1 Time zone TZ0
Command term Identify Question number 10 Adapted from N/A
10.
[Maximum mark: 1]
18N.1.SL.TZ0.10

Living organisms control pH within their tissues. What is a reason for regulating pH?

A.  All parts of a body must be kept at the same pH to survive.

B.  Many reactions can only happen at specific pH levels.

C.  pH affects osmosis.

D.  Control of active transport is achieved by pH.

[1]

Markscheme

B

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