BIOLOGY 1000: LECTURE EXAM 1
MACOMB COMMUNITY COLLEGE
WITH ACTUAL ANSWERS 2026-2027
UPDATE.
Cell - Answer The basic unit of structure and function in living things
Energy - Answer the ability to do work
Metabolism - Answer All of the chemical reactions that occur within an organism
Photosynthesis - Answer Conversion of light energy from the sun into chemical energy.
Homeostasis - Answer process by which organisms maintain a relatively stable internal
environment
Genes - Answer the biochemical units of heredity that make up the chromosomes; a segment
of DNA capable of synthesizing a protein
Adaptation - Answer A characteristic that improves an individual's ability to survive and
reproduce in a particular environment.
evolution - Answer Change over time
Species - Answer A group of similar organisms that can breed and produce fertile offspring.
natural selection - Answer A process in which individuals that have certain inherited traits
tend to survive and reproduce at higher rates than other individuals because of those traits.
Scientific Method - Answer A series of steps followed to solve problems including collecting
data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
Ecosystem - Answer A biological community of interacting organisms and their physical
environment.
Biodiversity - Answer The number of different species in an area
, outline and describe the characteristics of life. - Answer 1. Living things are organized. Range
from atoms to biosphere. Unicellular or multicellular. Each level of organization is more complex
than the level preceding it.
2. Living things acquire materials and energy. Energy is required to maintain organization. The
sun is the ultimate source of energy.
3. Living things maintain homeostasis. Ability to maintain a state of biological balance.
4. Living things respond to stimuli. Living things interact with the environment and respond to
change in the environment.
5. Living things reproduce and develop. Living things must reproduce to maintain a
population(pass copies of DNA).
6. Living things have adaptations. Over long periods of time, organisms respond to changing
environments by developing adaptations.
define and list, in order, the levels of organization from the simplest to the most complex. -
Answer Atom-smallest unit of an element.
Molecule-Union of two or more atoms of the same or different elements.
Cell-The structural and functional unit of all living things.
Tissue-A group of cells with a common structure and function.
Organ-Composed of tissues functioning together for a specific task.
Organ system-Composed of several organs working together.
Organism-An individual.
Population-Organisms of the same species in a particular environment.
Community-Interacting populations in a particular area.
Ecosystem-A community plus the physical environment.
Biosphere- Regions of the earth.
compare and constant the flow of energy and materials through an ecosystem. - Answer
Chemicals move from one population to another in a food chain(Chemicals are not used up
when organisms die). As a result of death and decomposition, chemicals are returned to living
plants. Energy from the sun flows through plants and other members of the food chain as one
population feeds another. Therefore, there must be a constant input of solar energy.
describe evolution and its importance. - Answer Evolution is the change in a population of
organisms over time to become most suited to the environment. The theory of evolution
suggest how all living things descended from a common ancestor. (Diversity and unity of life).
explain how and why taxonomists classify organisms. - Answer Taxonomy is the branch of
biology that identifies, names, and classifies organisms. Systematics is the study of evolutionary
relationships between organisms.
MACOMB COMMUNITY COLLEGE
WITH ACTUAL ANSWERS 2026-2027
UPDATE.
Cell - Answer The basic unit of structure and function in living things
Energy - Answer the ability to do work
Metabolism - Answer All of the chemical reactions that occur within an organism
Photosynthesis - Answer Conversion of light energy from the sun into chemical energy.
Homeostasis - Answer process by which organisms maintain a relatively stable internal
environment
Genes - Answer the biochemical units of heredity that make up the chromosomes; a segment
of DNA capable of synthesizing a protein
Adaptation - Answer A characteristic that improves an individual's ability to survive and
reproduce in a particular environment.
evolution - Answer Change over time
Species - Answer A group of similar organisms that can breed and produce fertile offspring.
natural selection - Answer A process in which individuals that have certain inherited traits
tend to survive and reproduce at higher rates than other individuals because of those traits.
Scientific Method - Answer A series of steps followed to solve problems including collecting
data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
Ecosystem - Answer A biological community of interacting organisms and their physical
environment.
Biodiversity - Answer The number of different species in an area
, outline and describe the characteristics of life. - Answer 1. Living things are organized. Range
from atoms to biosphere. Unicellular or multicellular. Each level of organization is more complex
than the level preceding it.
2. Living things acquire materials and energy. Energy is required to maintain organization. The
sun is the ultimate source of energy.
3. Living things maintain homeostasis. Ability to maintain a state of biological balance.
4. Living things respond to stimuli. Living things interact with the environment and respond to
change in the environment.
5. Living things reproduce and develop. Living things must reproduce to maintain a
population(pass copies of DNA).
6. Living things have adaptations. Over long periods of time, organisms respond to changing
environments by developing adaptations.
define and list, in order, the levels of organization from the simplest to the most complex. -
Answer Atom-smallest unit of an element.
Molecule-Union of two or more atoms of the same or different elements.
Cell-The structural and functional unit of all living things.
Tissue-A group of cells with a common structure and function.
Organ-Composed of tissues functioning together for a specific task.
Organ system-Composed of several organs working together.
Organism-An individual.
Population-Organisms of the same species in a particular environment.
Community-Interacting populations in a particular area.
Ecosystem-A community plus the physical environment.
Biosphere- Regions of the earth.
compare and constant the flow of energy and materials through an ecosystem. - Answer
Chemicals move from one population to another in a food chain(Chemicals are not used up
when organisms die). As a result of death and decomposition, chemicals are returned to living
plants. Energy from the sun flows through plants and other members of the food chain as one
population feeds another. Therefore, there must be a constant input of solar energy.
describe evolution and its importance. - Answer Evolution is the change in a population of
organisms over time to become most suited to the environment. The theory of evolution
suggest how all living things descended from a common ancestor. (Diversity and unity of life).
explain how and why taxonomists classify organisms. - Answer Taxonomy is the branch of
biology that identifies, names, and classifies organisms. Systematics is the study of evolutionary
relationships between organisms.
