Leaving Cert Biology Unit 1 definitions

The Study of living things (organisms)

Chemical reactions where smaller molecules are joined together
to form larger molecules

A non- living factor

Part(s) of earth that supports life

An animal that eats both animals and plant

An animal that feeds on animals only

Basic structural unit of a living organism (that possesses its
characteristics)

Chemical reactions where larger molecules are broken down
to smaller molecules

Measurements or observations or information gathered from an experiment

Standard for comparison

The ability of organisms to exist from one generation to the next

An active physical confrontation between 2 organisms in which only one wins
the resource

Chemical reactions where larger molecules are broken down
to smaller molecules

The wise management of the environment or organisms

The decaying of a dead organism

Chemical reactions where smaller molecules are joined together
to form larger molecules

Removal of the waste products of metabolisms

Factors relating to the soil [which affects the distribution of organisms in a
ecosystem]

Removal of unabsorbed material from the body

The conversion of nitrates into atmospheric nitrogen

Study of the interaction between organisms themselves and their environment.

[Technique in which] neither the tester nor the person being tested knows
which is the real pill and which is the placebo

The wise management of the environment or organisms

The Study of living things (organisms)

A survey which indicates if a species is present or not

A survey which records or estimates the numbers of a species (in a particular
ecosystem)

The amount of organisms at each trophic level.

A confrontation which results in each organism getting some of the resource.

The obtaining or making of food by living organisms

The conversion of nitrogen into nitrates.

The process of converting ammonia into nitrites and/or nitrites to nitrates

The functional role of an organism (in an ecosystem)

Grazing Food
Chain
Feeding relationship between organisms in which energy is transferred.

A proven theory.

Educated guess based on observation.

The harmful addition to the environment (by humans)

Organisms and their (interactions with) environment.

Part(s) of earth that supports life.

(Place) where a species (or an organism) lives

The functional role of an organism (in an ecosystem).

Factors relating to the soil [which affects the distribution of organisms in a
(terrestrial) ecosystem].

Living (organism’s influence on another organism).

A non- living factor

The numbers of a particular species [in a particular ecosystem].

Chemical reactions where smaller molecules are joined together to form larger molecules.

Removal of the waste products of metabolisms.

Chemical reactions where larger molecules are broken down to smaller molecules.

The act of killing and eating another animal ( or organism) for food.

An animal (or organism ) which kills and eats an animal (or organism or prey).

Basic structural unit of a living organism (that possesses its characteristics).

The functional role of an organism (in an ecosystem).

Common features that separate living things from non-living things (organisation, nutrition, excretion, response & reproduction)

Living (organism’s influence on another organism).

The process of converting ammonia into nitrites and/or nitrites to nitrates

Factors relating to the soil [which affects the distribution of organisms in a
(terrestrial) ecosystem].

Factors relating to long term weather conditions [which affects the distribution
of organisms in an ecosystem].

The ability of organisms to exist from one generation to the next.

An active physical confrontation between 2 organisms in which only one wins the resource.

The wise management of the environment or organisms.

When 2 or more organisms fight for a resource that is in short supply.

The obtaining or making of food by living organisms.

The wise management of the environment or organisms.

Make a duplicate(s) of an experiment or procedure.

The harmful addition to the environment (by humans).

An active physical confrontation between 2 organisms in which only one wins
the resource.

A confrontation which results in each organism getting some of the resource.

The act of killing and eating another animal ( or organism) for food.

When 2 or more organisms fight for a resource that is in short supply.

Study of the interaction between organisms themselves and their environment.

The ability of organisms to exist from one generation to the next.

(Place) where a species (or an organism) lives.

Interconnected food chains.

Educated guess based on observation.

A proven theory.

Standard for comparison.

A proven hypothesis.

The conversion of nitrates into atmospheric nitrogen

The decaying of a dead organism.

The process of converting ammonia into nitrites and/or nitrites to nitrates.

The conversion of nitrogen into nitrates.

[Technique in which] neither the tester nor the person being tested knows
which is the real pill and which is the placebo.

Measurements or observations or information gathered from an experiment

The decaying of a dead organism

The conversion of nitrates into atmospheric nitrogen

Control used in drug testing.

[Technique in which] neither the tester nor the person being tested knows
which is the real pill and which is the placebo.

The reacting of an organism to stimuli.

An organism which makes its own food.

Organisms and their (interactions with) environment.

Educated guess based on observation.

Relationship between (different) species in which at least one benefits.

Study of the interaction between organisms themselves and their environment.

The position of an organism in a food chain.

Study of the interaction between organisms themselves and their environment.

An organism which lives in or on another causing it harm.

Organisms and their (interactions with) environment.

Living (organism’s influence on another organism).

Factors relating to the soil [which affects the distribution of organisms in a (terrestrial) ecosystem].

A non- living factor.

Factors relating to long term weather conditions [which affects the distribution
of organisms in an ecosystem].

Removal of unabsorbed material from the body.

An organism which lives in or on another causing it harm.

Removal of the waste products of metabolisms.

The creating of new individuals of its own kind by an organism (by either sexual or asexual means).

The position of an organism in a food chain.

An organism which feeds on the primary consumer.

Feeding relationship between organisms in which energy is transferred.

Interconnected food chains or more than one species at each trophic level.

Interconnected food chains or more than one species at each trophic level.

An organism which feeds on the primary producer.

The animal hunted and killed by its predator

Feeding relationship between organisms in which energy is transferred.

Part(s) of earth that supports life.

An organism which feeds on the secondary consumer.

(Place) where a species (or an organism) lives.

An organism which makes its own food.

An animal that eats both animals and plants.

An animal that feeds on animals only.

An organism which feeds on the primary producer.

An animal that feeds on plants only.

Common features that separate living things from non-living things (organisation, nutrition, excretion, response & reproduction).

The Study of living things (organisms).

Part(s) of earth that supports life.

An organism which feeds on the primary consumer.

Chemical reactions where smaller molecules are joined together to form larger molecules.

The obtaining or making of food by living organisms.

An organism which lives in or on another causing it harm.

All the chemical reactions taking place in living organisms.

The conversion of nitrogen into nitrates

The functional role of an organism (in an ecosystem).

The animal hunted and killed by its predator.

The process of converting ammonia into nitrites and/or nitrites to nitrates

The harmful addition to the environment (by humans)

The process of converting ammonia into nitrites and/or nitrites to nitrates.

The conversion of nitrogen into nitrates.

The numbers of a particular species [in a particular ecosystem]

The process of converting ammonia into nitrites and/or nitrites to nitrates

The obtaining or making of food by living

An organism which lives in or on another causing it harm.

The conversion of nitrogen into nitrates.

Living (organism’s influence on another organism).

An animal that feeds on animals only.

An animal that feeds on plants only.

An animal that eats both animals and plants.

An organism which lives in or on another causing it harm.

The harmful addition to the environment (by humans).

Removal of unabsorbed material from the body.

Relationship between (different) species in which at least one benefits.

The wise management of the environment or organisms.

The act of killing and eating another animal ( or organism) for food.

[Technique in which] neither the tester nor the person being tested knows
which is the real pill and which is the placebo.

Control used in drug testing

The harmful addition to the environment (by humans).

The amount of organisms at each trophic level.

The act of killing and eating another animal ( or organism) for food.

An organism which makes its own food

An animal (or organism ) which kills and eats an animal (or organism or prey).

The animal hunted and killed by its predator

The act of killing and eating another animal ( or organism) for food.

An organism which feeds on the primary producer.

The act of killing and eating another animal ( or organism) for food.

An animal (or organism ) which kills and eats an animal (or organism or prey).

The amount of organisms at each trophic level.

The animal hunted and killed by its predator

The act of killing and eating another animal ( or organism) for food.

The animal hunted and killed by its predator.

An animal (or organism ) which kills and eats an animal (or organism or prey)

The numbers of a particular species [in a particular ecosystem]

A proven theory

An organism which makes its own food

An organism which feeds on the primary producer.

The amount of organisms at each trophic level.

An organism which feeds on the primary producer.

Educated guess based on observation.

A proven hypothesis.

A proven theory

An organism which feeds on the primary consumer.

The amount of organisms at each trophic.

An organism which makes its own food.

An organism which feeds on the secondary consumer.

A survey which indicates if a species is present or not

The amount of organisms at each trophic level.

A survey which records or estimates the numbers of a species (in a particular ecosystem).

The position of an organism in a food chain.

A survey which records or estimates the numbers of a species (in a particular
ecosystem).

A survey which indicates if a species is present or not.

The amount of organisms at each trophic level.

Control used in drug testing.

An organism which feeds on the primary consumer.

The creating of new individuals of its own kind by an organism (by either
sexual or asexual means).

The reacting of an organism to stimuli

Make a duplicate(s) of an experiment or procedure

An organism which feeds on the primary consumer.

Make a duplicate(s) of an experiment or procedure.

The numbers of a particular species [in a particular ecosystem].

The creating of new individuals of its own kind by an organism (by either
sexual or asexual means).

The harmful addition to the environment (by humans)

The numbers of a particular species [in a particular ecosystem]

The reacting of an organism to stimuli.

An organism which makes its own food

The wise management of the environment or organisms.

A confrontation which results in each organism getting some of the resource.

An active physical confrontation between 2 organisms in which only one wins
the resource.

When 2 or more organisms fight for a resource that is in short supply.

An organism which feeds on the primary producer.

An organism which feeds on the primary consumer.

An organism which feeds on the secondary consumer.

An animal that feeds on plants only.

An organism which lives in or on another causing it harm.

Relationship between (different) species in which at least one benefits.

The functional role of an organism (in an ecosystem).

All the chemical reactions taking place in living organisms.

Relationship between (different) species in which at least one benefits

An organism which feeds on the primary consumer.

An organism which feeds on the primary producer.

An organism which feeds on the secondary consumer.

A proven hypothesis.

Educated guess based on observation.

A proven theory.

The functional role of an organism (in an ecosystem).

The amount of organisms at each trophic level.

A survey which indicates if a species is present or not.

The position of an organism in a food chain.

Interconnected food chains or more than one species at each trophic level