©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
Biology 121 EXAM 1 Chapters 1-3 Questions
and Answers 100% Pass
Evolution - ANS Descent with modification: genetic change in a population or species over
generations: the heritable changes that have produced Earth's diversity of organisms. Changes
in DNA through time.
Biology - ANS The scientific study of life
List the 7 Properties of life that ALL living organisms share - ANS 1. Reproduction
2. Growth and Development
3. Energy Use
4. Order
5. Cells
6. Response to the Environment
7. Evolution
The levels of the biological organizations - ANS 1. Biosphere
2. Ecosystem
3. Community
4. Population
5. Organism
6. Organ System and Organ
1
, ©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
7. Tissue
8. Cell
9. Organelle
10. Molecule
Biosphere - ANS The global ecosystem: the entire portion of Earth inhabited by life; all of life
and where it lives at
Ecosystem - ANS All the organisms in a give area, along with the nonliving (abiotic) factors
with which they interact: a biological community and its physical environment
Community - ANS All the organisms inhabiting and potentially interacting in a particular area;
an assemblage of populations of different species
Population - ANS A group of interacting individuals belonging to one species and living in the
same geographic area at the same time.
Organisms - ANS An individual living thing, such as a bacterium, fungus, protist, plant or
animal.
Organ systems - ANS A group of organs that work together in performing vital body functions
Organ - ANS A structure consisting of two or more tissues that coordinate to perform specific
functions
Tissue - ANS An integrated group of similar cells that performs a specific function within a
multicellular organism
2
Biology 121 EXAM 1 Chapters 1-3 Questions
and Answers 100% Pass
Evolution - ANS Descent with modification: genetic change in a population or species over
generations: the heritable changes that have produced Earth's diversity of organisms. Changes
in DNA through time.
Biology - ANS The scientific study of life
List the 7 Properties of life that ALL living organisms share - ANS 1. Reproduction
2. Growth and Development
3. Energy Use
4. Order
5. Cells
6. Response to the Environment
7. Evolution
The levels of the biological organizations - ANS 1. Biosphere
2. Ecosystem
3. Community
4. Population
5. Organism
6. Organ System and Organ
1
, ©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
7. Tissue
8. Cell
9. Organelle
10. Molecule
Biosphere - ANS The global ecosystem: the entire portion of Earth inhabited by life; all of life
and where it lives at
Ecosystem - ANS All the organisms in a give area, along with the nonliving (abiotic) factors
with which they interact: a biological community and its physical environment
Community - ANS All the organisms inhabiting and potentially interacting in a particular area;
an assemblage of populations of different species
Population - ANS A group of interacting individuals belonging to one species and living in the
same geographic area at the same time.
Organisms - ANS An individual living thing, such as a bacterium, fungus, protist, plant or
animal.
Organ systems - ANS A group of organs that work together in performing vital body functions
Organ - ANS A structure consisting of two or more tissues that coordinate to perform specific
functions
Tissue - ANS An integrated group of similar cells that performs a specific function within a
multicellular organism
2
