excretion and genetics Flashcards
Name the excretory organs
Lungs , skin and kidneys
What is excretion
Excretion is getting rid of wastes from the cell
What do the lungs excrete
Water and carbon dioxide
What do the skin excrete
Sweat
What do the kidney excrete
Urine
What is urine made up of
Urea , water and salts
What is sweat made up of
Water and salts
What is genetics
Genetics is the study of inheritance of characterisers
What are chromosomes
Chromosomes are thread like structures found in the nucleus of the cell
What are genes?
Genes are chemicals found on chromosomes that pass information from parents to their children
What are the function of the urethers ?
The function of the urethers are to transport urine from the kidneys to the bladder
What is the function of the kidneys
Kidneys filter the blood and urine is made
Why is excretion important
Reactions happen in the cell and reactions make waste . If waste builds up in the cell , it becomes toxic so we have to get rid of it
