General Biology Exam Practice Questions &
100% Verified Answers
Atom - Answer Fundamental building block of all matter
Molecule - Answer Two or more atoms
Cell - Answer Basic form of life; smallest unit of life
Organ - Answer A grouping of tissues engaged in a collective task
Tissue - Answer Specialized cells organized in a pattern
Organelle - Answer Structure that carries out a specialized metabolic function within a living cell
Organ System - Answer A set of organs engaged in a collective task that keeps the body functioning
properly
Organism - Answer Individual that consists of of one or more cells
Population - Answer Grouping of the same species
Community - Answer All populations of all species in a given area; looks at interaction between the
species
Ecosystem - Answer All biotic and abiotic things; a community interacting with its environment
Biosphere - Answer All ecosystems on the planet
, *Gaia Theory: planet is one big organism
Characteristics of Life - Answer All living things:
1) Are made up of cells *
2) Have different levels of organization
3) Obtain and convert energy from environment *
4) Respond to their environment *
5) Get larger and more complex throughout life
6) Reproduce *
7) Adapt to their environment; Homeostasis *
Carbohydrates - Answer 1:2:1 CH2O
- Monosaccharides: simple sugars (glucose)
- Oligosaccharides: few sugars (sucrose)
- Polysaccharides: complex carbs; storage & structure (starch)
*Biologically important molecule
Proteins - Answer Composed of amino acid monomers
- Complex
- 3D enzymes
- Diverse
*Biologically important molecule
Lipids - Answer Non polar; doesn't dissolve in H2O
- Triglycerides: monomers of fatty acids & glycerol
- Phospholipids: bipolar molecule
- Steroids: 4 carbon rings
100% Verified Answers
Atom - Answer Fundamental building block of all matter
Molecule - Answer Two or more atoms
Cell - Answer Basic form of life; smallest unit of life
Organ - Answer A grouping of tissues engaged in a collective task
Tissue - Answer Specialized cells organized in a pattern
Organelle - Answer Structure that carries out a specialized metabolic function within a living cell
Organ System - Answer A set of organs engaged in a collective task that keeps the body functioning
properly
Organism - Answer Individual that consists of of one or more cells
Population - Answer Grouping of the same species
Community - Answer All populations of all species in a given area; looks at interaction between the
species
Ecosystem - Answer All biotic and abiotic things; a community interacting with its environment
Biosphere - Answer All ecosystems on the planet
, *Gaia Theory: planet is one big organism
Characteristics of Life - Answer All living things:
1) Are made up of cells *
2) Have different levels of organization
3) Obtain and convert energy from environment *
4) Respond to their environment *
5) Get larger and more complex throughout life
6) Reproduce *
7) Adapt to their environment; Homeostasis *
Carbohydrates - Answer 1:2:1 CH2O
- Monosaccharides: simple sugars (glucose)
- Oligosaccharides: few sugars (sucrose)
- Polysaccharides: complex carbs; storage & structure (starch)
*Biologically important molecule
Proteins - Answer Composed of amino acid monomers
- Complex
- 3D enzymes
- Diverse
*Biologically important molecule
Lipids - Answer Non polar; doesn't dissolve in H2O
- Triglycerides: monomers of fatty acids & glycerol
- Phospholipids: bipolar molecule
- Steroids: 4 carbon rings
