MRS GREN Flashcards
What is the definition of movement?
Movement is an action by an organism or part of an organism that causes a change in position or place.
What is the definition of respiration?
Respiration is the chemical reactions in cells which break down nutrient molecules and release energy. Most organisms need oxygen for this.
What is the definition of sensitivity?
Sensitivity is the ability to detect or sense stimuli in the internal or external environment and make appropriate responses.
What is the definition of growth?
Growth is the permanent increase in size or dry mass of an organism by increase in cell number and/or cell size.
What is the definition of excretion?
Excretion is the removal of the waste products from metabolism in an organism. These waste materials may be toxic materials, substances in excess requirements and products like carbon dioxide.
What is the definition of reproduction?
Reproduction is the process by which more of the same kind of organism are made.
What is the definition of nutrition?
Nutrition is the taking in of substances required for energy, growth, and development. Animals which use ready made organic molecules as their food source are called heterotrophs. Photosynthetic plants are called autotrophs.
