CIE iGCSE Co-Ordinated Science B13.2 Hormones Exam Style Questions Paper 1
Question
What is a hormone?
A a chemical substance, produced by a gland, which alters the activity of target organs
B a protein that acts as a biological catalyst
C a thread-like structure of DNA, carrying genetic information in the form of genes
D an electrical signal that travels along a nerve cell to an effector
▶️Answer/Explanation
Ans :A
Question
Which row shows a person’s response to a ‘fight or flight’ situation?
▶️Answer/Explanation
Ans: D
Question
What are the effects of adrenaline?
▶️Answer/Explanation
Ans : D
Question
One response to a frightening situation is an increase in heart rate caused by the release of adrenaline.
Which statement about adrenaline is correct?
(A It is an enzyme produced by an organ and travels in the blood to the heart.
(B) It is an enzyme produced by an organ and travels down a nerve to the brain.
(C) It is a hormone produced by a gland and travels in the blood to the heart.
(D) It is a hormone produced by a gland and travels down a nerve to the brain.
▶️Answer/Explanation
Ans : C