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Characteristics Life
Leaving Cert Biology
Question | Answer |
---|---|
What is diversity? | A wide range of living things |
What are the common features of living things | Organisation, Nutrition, Excretion, Response and Reproduction (ONE Roger Rabbit) |
What do you call the sum of all the chemical reactions in living things | Metabolism |
What type of reaction involves the breakdown of larger molecules to smaller ones and also releases energy | Catabolic reaction |
What type of reaction involves smaller molecules being used to make larger ones and takes in energy | Anabolic reaction |
What is defined as the possession of all the characteristics | Life |
What term is used to describe how living organisms arise from living organisms of the same type | Continuity of life |
What are all living things made of | Cells |
Some organisms exist as one cell, what term is used to describe this | Unicellular |
What characteristic of living things refers to the order in which cells are made up | Organisation |
What is the order of levels of organisation of life | Cells, Tissue, Organ, System, Organism, Population |
What term is used to describe the way in which organisms obtain and use food for energy | Nutrition |
What do you call organisms that can make their own food | Autotrophs |
What do you call organisms that cannot make their own food | Heterotrophs |
What term is used to describe the removal of waste products | Excretion |
Name two products of excretion | Carbon dioxide and urea |
Why is it dangerous for waste products to accumulate in the body | It becomes toxic |
What term is given to the process by which an organism maintains a constant internal environment | Homeostasis |
What term is used to describe the formation of new individuals | Reproduction |
What are the two methods or reproduction | Asexual and Sexual |
What reproduction method involves the fusion of gametes | Sexual |
What reproduction method involves cell division | Asexual |
What characteristic of living things refers to the reaction of organisms to stimuli in their environmnet | Response |