Biology- Campbell Biology 3rd Edition (EXAM 1)
Questions & Answers 2025/2026
1. Biosphere - ANSWER-The entire portion of Earth inhabited by life; the sum
of all the planet's ecosystems.
2. Biome - ANSWER-Any of the world's major ecosystem types, often
classified according to the predominant vegetation for terrestrial biomes and
the physical environment for aquatic biomes and characterized by
adaptations of organisms to that particular environment.
3. Ecosystem - ANSWER-All the organisms in a given area as and the abiotic
factors with which they interact; one or more communities and the physical
environment around them.
4. Abiotic - ANSWER-Nonliving; referring to the physical and chemical
properties of an environment.
5. Biotic - ANSWER-Pertaining to the living factors- the organisms- in an
environment.
6. Community - ANSWER-All the organisms that inhabit a particular areal an
assemblage of populations of different species living close enough together
for potential interaction.
7. Population - ANSWER-A group of individuals of the same species that live
in the same area and interbreed, producing fertile offspring.
8. Species - ANSWER-A population or group of populations whose members
have the potential to interbreed in nature and produce viable, fertile
offspring, but do not produce viable, fertile offspring with members of other
such groups.
9. Organism - ANSWER-A living thing
10.Organ - ANSWER-In Linnaean classification, the taxonomic category above
the level of family.
, 11.Tissue - ANSWER-An integrated group of cells with a common structure,
function, or both.
12.Cell - ANSWER-The basic unit of structure and function in living things
13.Organelle - ANSWER-Any of 7 membrane-enclosed structures with
specialized functions, suspended in cytosol of eukaryotic cells.
14.Molecule - ANSWER-A group of atoms bonded together
15.Atom - ANSWER-Smallest unit of matter that retains the properties of an
element.
16.Cell theory - ANSWER-idea that all living things are composed of cells,
cells are the basic units of structure and function in living things, and new
cells are produced from existing cells
17.Prokaryotic cell - ANSWER-A type of cell lacking a membrane-enclosed
nucleus and membrane-enclosed organelles. Organisms with this cell =
Bacteria and archaea.
18.Eukaryotic cell - ANSWER-A type of cell with a membrane-enclosed
nucleus and membrane-enclosed organelles. Organisms with this cell =
protists, plants, fungi, and animals.
19.Multicellular - ANSWER-Consisting of many cells
20.Unicellular - ANSWER-Made of a single cell
21.Colonial - ANSWER-A cluster of identical cells (clones) on the surface of
(or within) a solid medium, usually derived from a single parent cell, as in
bacterial colony.
22.Cell (plasma) membrane - ANSWER-phospholipid bilayer that protects and
encloses the cell; controls transport; maintains homeostasis
23.Cytoplasm - ANSWER-The contents of the cell bounded by the plasma
membrane; in eukaryotes, the portion exclusive of the nucleus.
Questions & Answers 2025/2026
1. Biosphere - ANSWER-The entire portion of Earth inhabited by life; the sum
of all the planet's ecosystems.
2. Biome - ANSWER-Any of the world's major ecosystem types, often
classified according to the predominant vegetation for terrestrial biomes and
the physical environment for aquatic biomes and characterized by
adaptations of organisms to that particular environment.
3. Ecosystem - ANSWER-All the organisms in a given area as and the abiotic
factors with which they interact; one or more communities and the physical
environment around them.
4. Abiotic - ANSWER-Nonliving; referring to the physical and chemical
properties of an environment.
5. Biotic - ANSWER-Pertaining to the living factors- the organisms- in an
environment.
6. Community - ANSWER-All the organisms that inhabit a particular areal an
assemblage of populations of different species living close enough together
for potential interaction.
7. Population - ANSWER-A group of individuals of the same species that live
in the same area and interbreed, producing fertile offspring.
8. Species - ANSWER-A population or group of populations whose members
have the potential to interbreed in nature and produce viable, fertile
offspring, but do not produce viable, fertile offspring with members of other
such groups.
9. Organism - ANSWER-A living thing
10.Organ - ANSWER-In Linnaean classification, the taxonomic category above
the level of family.
, 11.Tissue - ANSWER-An integrated group of cells with a common structure,
function, or both.
12.Cell - ANSWER-The basic unit of structure and function in living things
13.Organelle - ANSWER-Any of 7 membrane-enclosed structures with
specialized functions, suspended in cytosol of eukaryotic cells.
14.Molecule - ANSWER-A group of atoms bonded together
15.Atom - ANSWER-Smallest unit of matter that retains the properties of an
element.
16.Cell theory - ANSWER-idea that all living things are composed of cells,
cells are the basic units of structure and function in living things, and new
cells are produced from existing cells
17.Prokaryotic cell - ANSWER-A type of cell lacking a membrane-enclosed
nucleus and membrane-enclosed organelles. Organisms with this cell =
Bacteria and archaea.
18.Eukaryotic cell - ANSWER-A type of cell with a membrane-enclosed
nucleus and membrane-enclosed organelles. Organisms with this cell =
protists, plants, fungi, and animals.
19.Multicellular - ANSWER-Consisting of many cells
20.Unicellular - ANSWER-Made of a single cell
21.Colonial - ANSWER-A cluster of identical cells (clones) on the surface of
(or within) a solid medium, usually derived from a single parent cell, as in
bacterial colony.
22.Cell (plasma) membrane - ANSWER-phospholipid bilayer that protects and
encloses the cell; controls transport; maintains homeostasis
23.Cytoplasm - ANSWER-The contents of the cell bounded by the plasma
membrane; in eukaryotes, the portion exclusive of the nucleus.
