paper 2 Flashcards
(25 cards)
What is homeostasis?
Keeping internal conditions stable.
Name an organ involved in controlling blood sugar
Pancreas.
What hormone lowers blood sugar?
Insulin
What hormone raises blood sugar?
Glucagon
What is the main female reproductive hormone?
Oestrogen
What is the main male reproductive hormone?
Testosterone
What does FSH do?
Stimulates egg development in ovaries
What does LH do?
Triggers ovulation
What is a reflex?
A quick, automatic response to a stimulus.
What is a synapse?
The gap between two neurons
What is biodiversity?
The variety of living things in an ecosystem
What is global warming?
The rise in Earth’s average temperature.
What is deforestation?
Cutting down large areas of trees
What is a producer in a food chain?
A plant that makes its own food
What is a decomposer?
An organism that breaks down dead material
What is selective breeding?
Breeding organisms with desired traits
What is genetic engineering?
Changing an organism’s DNA
What is an ecosystem?
A community of living things and their environment.
What is a hormone?
A chemical messenger in the body.
What does the kidney do?
Filters blood and makes urine.
Which organ system has glands that produce hormones?
the endocrine system
How are hormones transported around the body?
by the blood
Which organ does insulin mainly affect?
the liver
Which hormone causes an egg to mature in the ovary?
FSH
