BODY SYSTEMS & HOMEOSTASIS
Detecting a change in the environment uses which cells?
Receptors
Male reproductive cells are called?
Sperm.
Plants take in which gas during photosynthesis?
Carbon dioxide.
Sound travels as a…
Wave.
What are the three subatomic particles?
Proton, neutron, electron.
What is the body’s response to a stimulus called?
Coordinated response.
What is the female reproductive cell?
Egg (ovum).
What process releases CO₂ from animals?
Respiration.
Heat transfer by particles touching is called…
Conduction.
Which particle determines the element?
Protons.
What type of feedback keeps conditions stable?
Negative feedback.
Asexual reproduction produces offspring that are…
Identical.
Burning fuels is called…
Combustion.
What law says energy can’t be created or destroyed?
Conservation of energy.
What type of radiation is a helium nucleus?
Alpha radiation.
Which two systems mainly coordinate responses?
Nervous & endocrine.
Sexual reproduction increases what in a population?
Genetic variation.
What process removes carbon dioxide from the atmosphere?
Photosynthesis.
Energy efficiency compares useful energy to…
Total input.
What does the atomic number tell you?
Number of protons.
What hormone lowers high blood sugar levels?
Insulin.
What process joins sperm and egg?
Fertilisation.
Which process releases carbon from dead organisms back into the atmosphere?
Decomposition.
What type of energy is stored in stretched or compressed objects?
Elastic potential energy.
Why does the mass of products equal the mass of reactants?
Atoms are conserved.