Characteristics of Living Organisms (They Excrete their waste (The kidneys…
Characteristics of Living Organisms
Organisms have to produce offspring (children) in order for their species to survive.
there are two ways an organism can reproduce
Sexual Reproduction Produces Genetically different Cells
The offspring contain a mixture of there parents' genes
Involves the fusion of male and female gametes.
offspring have identical genes
only involves one parent
Asexual Reproduction Involves Mitosis
They Respond to Their Surroundings
Living organisms can react to changes in their surroundings
Receptors Detect Stimuli and Effectors Produse a Responce
Animals increase their chances of survival by responding to changes in their external enviroment
They grow and develop
Yup, even the smallest organisms have to grow and develop into their adult form.
Respiration is the process of transferring energy from glucose. It goes on in every cell in your body
glucose + oxygen --> carbon dioxide + water (+energy)
Orgasms release enrgy from their food by a process called respiration.
They Can Control Their Internal Conditions
Internal conditions include temperature and water content.
Homeostasis - it's all about Balance
Homeostasis is what keeps these conditions balanced.
Body Temperatures - you need to get rid of excess body heat when you're hot, but retain heat when the environment is cold.
Water content - you need to keep a balance between the water you gain and the water you lose.
They Need Nutrition
Nutrients include things like proteins, fats and carbohydrates, as well as vitamins and minerals
Living organisms need nutrients to provide them with energy and the raw materials for growth and repair.
Organisms move towards things like water and food, and away from things like predators and poisons.
Even plants can move a bit
They Excrete their waste
The kidneys are excretion organs
1) Removal of urea from the blood
3) Adjustment of water content of the blood
2) Adjustment of ion (salt) levels in the blood
Waste products such as carbon dioxide and urine have to be removed.
Carbon dioxide is a waste product from the lungs.
The removal of waste is called excretion