Biology Crossword

What is name for oxidisation of ammonia or ammonium to nitrite followed by the oxidisation of nitrite to nitrate?
What is between the left atrium and left ventricle? (HINT: it prevents backflow of blood)
What is the junction between two nerve cells which neurotransmitters diffuse across?
What is the collective name for the air passages that branch off the trachea?
What is the name for a group of tissues which work together to carry out a specific function?
The word used to refer to the kidneys.
Women have two of them which produce eggs as well as the hormones: oestrogen and progesterone.
Carries our genetic information.
An animal's response to a stimulus is coordinated by its ...
Plant growth hormones.
What are long, hollow, narrow tubes which transport and supply water for photosynthesis?
The movement of water from a low solute concentration to a high solute concentration over a partially permeable membrane.
Pores in the epidermis surrounded by two guard cells enabling gas exchange.
Stores urine.
Pumps oxygenated blood from heart to the rest of the body.
Carries urine out of the body.
What is the removal of waste products of metabolism?
The structure within the kidney that carries out both excretion and osmoregulation.
What is released from pituitary when the blood is more concentrated than normal?
A dark layer that absorbs any light that has passed through the retina.
The nerve pathway of a reflex.
Stimulates liver cells to take up glucose and convert it to glycogen, therefore lowers blood glucose. Source = pancreas.
A system which works by hormones transmitted through the bloodstream.
C6H12O6 + 6O2 -> 6CO2 + 6H2O + _ _ _
What is a toxic product of anaerobic respiration?
Microscopic air sacs in the lungs where gas exchange takes place.