The nature and variety of living organisms Flashcards
MRSCGREN stands for what
Movement
Sensitivity
Control
Growth
Respiration
Excretion
Nutrition
What does M mean in MRSCGREN definition?
Movement an action by an organism or part of an organism causing a change of position of place. Animals move their whole bodies to get from one place to another.
What does R stand for in MRSCGREN
Reproduction the process of making more of the same kind of organism.
What does the S stand for in MRSCGREN
Sensitivity. The ability to detect or sense changes in the environment and to make responses.
e.g. plant grows toward the light
What does c stand for in MRSCGREN
Control the ability to matain a steady state inside of the body.
e.g.
Temp
Blood sugar level
Water level
What does G stand for in MRSCGREN
Growth a permanent increase in size by an increase in cell numbers or ell sizes or both
What does R stand for in MRSCGREN?
Respiration . The chemical reaction that breaks down nutrient molecules in living cells to release energy.
What does e stand for in MRSCGREN
Excretion
Removal from organism of toxic material waste products of metabolism and substances in excess of requirements
What does N in MRSCGREN stand for
Nutrition providing or obtaining the food necessary containing raw materials or energy for growth and tissue repair.
Unicellular organism definition
An organism made up of one cell
multicellular organism
an organism made up of two or more cells
Organelle defenition
Tiny structures found within cells ,e.g. nucleus
cell defenition
The smallest unit of life - the building blocks of life , e.g. epithelial cell
Tissue definition
a group of similar cells working together to carry out a a particular function , e.g. xylem
Organ definition
a group of different tissues that work together to perform a function , e.g. kidney
