The distribution of organisms in a habitat depends on abiotic and biotic factors.
.1
Which two are abiotic factors? Tick two boxes.
[2 marks].2
Which resource do plants in a community compete for?
[1 mark]Edexcel GCSE Biology June 2025 Paper 1F
5 questions on this paper's topics
19:001 of 5
A person touches a hot pan and quickly pulls their hand away. This is a reflex action.
.1
Put the parts of the reflex arc in order, starting with the receptor.
[1 mark].2
How does the signal cross a synapse between two neurones?
[1 mark].3
Which part of this reflex is the effector?
[1 mark]Differences in the characteristics of individuals in a population are called variation.
.1
Which two characteristics are caused only by the genes a person inherits? Tick two boxes.
[2 marks].2
What is a mutation?
[1 mark].3
Name the process by which organisms best suited to their environment are more likely to survive and breed.
[1 mark]Substances move into and out of cells by diffusion, osmosis and active transport.
.1
Which statement describes diffusion?
[1 mark].2
Which two changes would increase the rate of diffusion of oxygen into a cell? Tick two boxes.
[2 marks].3
Root hair cells take in mineral ions from very dilute soil water. Which process do they use?
[1 mark]Diseases can be communicable or non-communicable.
.1
Which two diseases are non-communicable? Tick two boxes.
[2 marks].2
What is a carcinogen?
[1 mark].3
Drinking large amounts of alcohol over many years is a risk factor for disease in one organ in particular.
Name this organ.
[1 mark]