Levels of greenhouse gases in the atmosphere are increasing.
.1
Which two gases are greenhouse gases that contribute to global warming? Tick two boxes.
[2 marks].2
Which two are biological consequences of global warming? Tick two boxes.
[2 marks]AQA GCSE Combined Science November 2021 Biology Paper 2F
5 questions on this paper's topics
19:001 of 5
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]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]Organisms reproduce sexually or asexually.
.1
Which statement describes asexual reproduction?
[1 mark].2
Which two are gametes in flowering plants? Tick two boxes.
[2 marks].3
Name the type of cell division that produces gametes.
[1 mark]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]