Spring 2025) Exam Questions and
Answers 100% Pass
Biology - ✔✔The study of life
Evolution - ✔✔Makes sense of everything we know about living organisms
Organisms living on Earth: - ✔✔are modified descendants of common ancestors
Pasteur - ✔✔disproved the concept of spontaneous generation
Including evolution there are __ themes that unify biology - ✔✔8
Define what life is: - ✔✔1. Order
2. Reproduction
3. Growth and development
4. Energy processing
5. Responses to environment
6. Regulation
7. Evolutionary adaptations
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,Order - ✔✔Life is highly organized; living cells are the basis of the organization.
Reproduction - ✔✔Organisms reproduce with their own kind.
Growth and Development - ✔✔Consistent growth + development controlled by
inherited DNA
Energy Processing - ✔✔Use of chemical energy to power an organisms activities and
chemical reactions
Responses to Environment - ✔✔Ability to respond to environmental stimuli
Regulation - ✔✔Ability to control an organisms internal environment with limits to
sustain life
Evolutionary Adaptations - ✔✔Adaptions evolve over generations as individuals with
traits best suited to their environment have greater chance of survival and therefore
reproductive success. Pass their traits to offspring.
Biosphere - ✔✔All of the environments on earth that support life (most land regions,
bodies of water, and lower atmosphere)
Ecosystem - ✔✔All the organisms living in a particular area (large) and the physical
components which the organisms interact with. (soil, water, air)
Community - ✔✔All organisms that inhabit an ecosystem.
Population - ✔✔All the individuals of a species living in an specific area
Organisms - ✔✔Individual living things
Organ - ✔✔A body part of two or more tissues that carries out a particular function in
an organism.
Organ System - ✔✔Several organs that cooperate in a specific function.
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,Tissues - ✔✔An organized group of cells of a particular type
Cells - ✔✔Fundamental unit of organisms.
Organelles - ✔✔Functional, membrane enclosed structures that make up cells present in
eukaryotic cells. Performs a specific function in a cell.
Molecule - ✔✔Cluster of small chemical units called atoms held together by chemical
bonds
Atoms - ✔✔Smallest chemical unit.
Is the hierarchy related to scale (size)? - ✔✔Not necessarily, consider the microbiome in
you
Whats the microbiome? - ✔✔Bacteria and other organisms live in communiteis and
ecosystems within us and support important functions (eg. digestion, immune system)
Emergent Properties - ✔✔Unique properties that each level in a hierarchy has.
Emergent properties result from: - ✔✔The arrangement and interaction of parts within
a system
True or False?
Emergent properties characterize biological and non biological entities. - ✔✔True
What is the source of problems concerning emergent properties? - ✔✔It is difficult to
predict emerging properties
Cells - ✔✔the lowest level of organization that can perform all activities required for
life.
(4) All Cells... - ✔✔-are enclosed by a membrane
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, -use DNA as their genetic
information
-have chromosomes
-divide to reproduce (life comes
from pre-existing life)
Eukaryotic Cells - ✔✔-have organelles (including a
nucleus)
-Plants, animals, fungi, and all
other forms of life are eukaryotic
Prokaryotic Cells - ✔✔-Simpler
-Usually smaller
-No nucleus or other organelles
ex. Bacteria and archaea
Feedback Mechanisms - ✔✔Allow biological processes to self regulate meaning they
react and respond.
Two types of Feedback Mechanisms - ✔✔1. Positive feedback
2. Negative feedback
Negative Feedback - ✔✔As more of a product accumulates, the process that create it
slows and less of the product is produced
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