2.2 Animal tissues, organs and organ systems

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Question 60

In an investigation, a drop of a mixture of amylase and starch is added to iodine solution every 30 seconds. Which observation shows that all of the starch in the mixture has been broken down?

[1]

The iodine solution turns from orange-brown to blue-black

The iodine solution turns blue-black and then turns colourless

The iodine solution stays blue-black each time a drop is added

The iodine solution stays orange-brown when the drop is added

In an investigation, a drop of a mixture of amylase and starch is added to iodine solution every 30 seconds. Which observation shows that all of the starch in the mixture has been broken down?

The iodine solution turns from orange-brown to blue-black

The iodine solution turns blue-black and then turns colourless

The iodine solution stays blue-black each time a drop is added

The iodine solution stays orange-brown when the drop is added

2.2 Animal tissues, organs and organ systems

Question 60

Markscheme

2.2 Animal tissues, organs and organ systems

Question 60

Markscheme

2.2 Animal tissues, organs and organ systems

Question 60

2.2 Animal tissues, organs and organ systems Questions

2.2 Animal tissues, organs and organ systems

Question 60

2.2 Animal tissues, organs and organ systems Questions