Revision Notes Flashcards
What is a synapse?
a junction between two nerve cells
Which type of neurone transmits a signal from a sense organ to the spinal cord and brain?
Sensory neuron
What is the name of the long part of the nerve cell that carries the signal?
The Axon
The ability of the eye to control the amount of light entering it is
A reflex action
Which of these is not a reflex response?
Blinking, Picking up a book (correct), Sneezing
Which type of neurone transmits a signal from the central nervous system to an effector such as a muscle?
Motor Neurone
How is a reflex action different from a normal response by the nervous system to a stimulus?
It doesn’t need to involve the brain(correct), It doesn’t involve the nerves, It is slower
What is a tropism?
Growth of a plant in response to a stimulus(correct),The energy at each stage of a food chain,A hallucinogenic drug
What is geotropism?
A response to gravity
Which if the following is not a use of plant hormones?
Weedkiller,Rooting powder,Controlling diabetes(correct)
What is homeostasis?
Maintaining a constant internal environment
Which hormone is secreted into the blood if the glucose levels are too high?
Insulin
Which type of diabetes is associated with becoming resistant to insulin?
Type II
What is osmoregulation?
Controlling water content
What is the BMI at which a person is considered obese?
20,25,30(correct)
