Respiration happens continuously in living cells.
.1
Which word equation shows aerobic respiration?
[1 mark].2
During hard exercise, muscle cells respire anaerobically. What do they produce?
[1 mark].3
Why do all living cells respire?
[1 mark]OCR Gateway GCSE Combined Science June 2023 Paper 1
5 questions on this paper's topics
19:001 of 5
A student tests some foods for starch, sugar and protein.
.1
Which solution does the student use to test for starch?
[1 mark].2
The student heats a food with Benedict's solution. The food contains a lot of glucose.
What colour does the mixture turn?
[1 mark].3
Name the solution used to test for protein.
[1 mark].4
Suggest why the student heats the Benedict's test tubes in a water bath rather than directly over a Bunsen burner.
[1 mark]A leaf is a plant organ made of several tissues.
.1
What is the main function of the palisade mesophyll tissue?
[1 mark].2
Name the tissue that carries water from the roots to the leaves.
[1 mark].3
What does phloem tissue transport?
[1 mark]Hormones are chemicals secreted by endocrine glands.
.1
Name the gland in the brain that is often called the 'master gland'.
[1 mark].2
Which gland produces insulin?
[1 mark].3
How do hormones travel to their target organs?
[1 mark]Plants make their own food by photosynthesis.
.1
Which word equation shows photosynthesis?
[1 mark].2
Photosynthesis is an endothermic reaction. What does this mean?
[1 mark].3
Name the green substance in chloroplasts that absorbs light.
[1 mark]