1 Biology - Introduction to Biology
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25 Terms
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unicellular organisms
Organisms consisting of a single cell.
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excretion
Removal of waste products by an organism.
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waste
All living organisms produce ________ that needs to be removed.
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Sperm
________ and egg cells fuse to form a child with combined genetic set.
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eg plants
Can be obtained by eating other organisms or from the environment (________ photosynthesise)
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Catabolism Organisms
________ break down complex molecules into simple molecules- releases energy.
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Cells
The smallest structural and functional units of all organisms, and are usually only visible through microscopes.
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Survival of organisms
________ requires food for energy and nutrients.
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genetic information
Parents produce sperm and egg cells, each with half the ________ that the child will receive.
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total of all biochemical reactions
The ________ occurring in a living organism is called metabolism.
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Cells
________ differentiate and have different purposes early on (skin, muscle, blood, nerve ________ etc)
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cell
The ________ is the smallest unit of life.
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Anabolism; Organisms form complex molecules from simple molecules
consumes energy
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Catabolism; Organisms break down complex molecules into simple molecules
releases energy
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Sexual
two parents
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Associated with mitosis
cell division
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Anabolism
Organisms form complex molecules from simple molecules - consumes energy.
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Catabolism
Organisms break down complex molecules into simple molecules - releases energy.
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Asexual reproduction
Offspring is produced by a single parent which inherits all the parent's genes.
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Sexual reproduction
Offspring is produced by the combination of sperm and egg cells from two parents
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Homeostasis
Regulation of internal environment to a stable level.
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Growth
An organism's development over time.
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Excretion
Removal of waste products from an organism.
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Unicellular organism
Composed of one cell which performs all functions required for life.
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Multicellular organism
Composed of more than one cell which together perform all functions required for life.
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