Characteristics of Living things

How many characteristics of living things are there?

Seven

What is movement?

A change of position by an organism or part of an organism.

What is excretion?

The removal of toxic/metabolic waste from the bodies of organisms.

What is Respiration?

The breakdown of food molecules (glucose) to release energy. Respiration takes place in the mitochondria of cells.

What are the 2 types of respiration?

Aerobic and Anaerobic

What is aerobic respiration?

Takes place in the presence of oxygen. Completely breaks down glucose to release lots energy.

What is Anaerobic respiration?

Takes place in the absence of oxygen. Only partially breaks down glucose and releases little energy.

What is reproduction?

Making more of the same kind of organism at oneself.

What are the 2 kinds of reproduction methods?

Asexual and sexual

What is asexual reproduction?

Asexual reproduction involves one organism and no gametes (sex cells)

What is sexual reproduction?

Sexual reproduction involves 2 organisms of the opposite sex and gametes.

What is Irritability/Sensitivity?

The ability to detect or sense changes in the environment and to make appropriate responses.

What is nutrition?

Taking in and using nutrients for maintenance, energy, warmth, growth and tissue repair.

What are nutrients?

And substance obtained by food used by an organism to survive, grow or reproduce.

What is growth?

The permanent increase in size and dry mass due to an increase in number of cells, cell size, or both.