BIOLOGY 101 EXAM 1 |85 COMPLETE QUESTIONS WITH EXPERT SOLUTIONS| 2026
LATEST UPDATED| A+
1. List the eleven levels of biological organization (in order- largest to smallest)-
: Biosphere, ecosystem, community, population, organism, organ system, organ, tissue, cell, molecule
2. What is a biosphere?: regions of the Earths crust, waters, and atmosphere inhabited by living things ex : tundra
3. what is an ecosystem?: a community plus the physical environment 4. what is a community?: interacting
populations in a particular area
ex : elephants in africa
5. what is a population?: organisms of the same species in a particular area ex: humans
6. what is a organism?: an individual; complex individuals contain organ systems 7.
what is a organ system?: composed of several organs working together ex: circulatory
system
8. what is a organ?: composed of tissues functioning together for a specific task ex: heart
9. what is a tissue?: a group of cells with a common structure and function
10. what is a cell?: the structural and functional unit of all living things
*levels above and including cells are all living, levels below cells are not living
11. what is a molecule?: union of two or more atoms of the same or different elements
12. what is a atom?: smaller unit of an element composed of electrons, protons and neutrons
13. What is an emergent property? Can you give an example (or two) from the list in Q1?: new properties emerge
with each step up in the biological hierarchy ex : molecules -> cells ->tissues
14. List the five common characteristics of living things: 1. require materials and energy 2. maintain homeostasis
, 3. respond to their environment
4. reproduce and develop
5. adapt and evolve
15. Using DOGS REACH - what does D stand for?: DNA
16. Using DOGS REACH - what does O stand for?: organized
17. Using DOGS REACH - what does G stand for?: Grow
18. Using DOGS REACH - what does S stand for?: stimulus response
19. Using DOGS REACH - what does R stand for?: reproduce
20 Using DOGS REACH - what does E stand for?: energy
21. Using DOGS REACH - what does A stand for?: adapt
22. Using DOGS REACH - what does C stand for?: cells
23. Using DOGS REACH - what does H stand for?: homeostasis
24. List the eight levels of taxonomic classification in order - largest to smallest: Domain, Kingdom, Phylum, Class,
Order, Family, Genus, Species
25. What is binomial nomenclature? What does it include? Give an example: The scientific name for species using
Genus species ex : Homo sapiens (humans)
26. List the 3 Domains of life on Earth. Generally, who is in each domain?: 1. bacteria - bacteria 2. arches -
extramophiles
3. eukarya - eukaryotes (humans, plants, animals, fungi, protists)
27. List the 4 Kingdoms in the Domain Eukarya: 1. protista
2. fungi
LATEST UPDATED| A+
1. List the eleven levels of biological organization (in order- largest to smallest)-
: Biosphere, ecosystem, community, population, organism, organ system, organ, tissue, cell, molecule
2. What is a biosphere?: regions of the Earths crust, waters, and atmosphere inhabited by living things ex : tundra
3. what is an ecosystem?: a community plus the physical environment 4. what is a community?: interacting
populations in a particular area
ex : elephants in africa
5. what is a population?: organisms of the same species in a particular area ex: humans
6. what is a organism?: an individual; complex individuals contain organ systems 7.
what is a organ system?: composed of several organs working together ex: circulatory
system
8. what is a organ?: composed of tissues functioning together for a specific task ex: heart
9. what is a tissue?: a group of cells with a common structure and function
10. what is a cell?: the structural and functional unit of all living things
*levels above and including cells are all living, levels below cells are not living
11. what is a molecule?: union of two or more atoms of the same or different elements
12. what is a atom?: smaller unit of an element composed of electrons, protons and neutrons
13. What is an emergent property? Can you give an example (or two) from the list in Q1?: new properties emerge
with each step up in the biological hierarchy ex : molecules -> cells ->tissues
14. List the five common characteristics of living things: 1. require materials and energy 2. maintain homeostasis
, 3. respond to their environment
4. reproduce and develop
5. adapt and evolve
15. Using DOGS REACH - what does D stand for?: DNA
16. Using DOGS REACH - what does O stand for?: organized
17. Using DOGS REACH - what does G stand for?: Grow
18. Using DOGS REACH - what does S stand for?: stimulus response
19. Using DOGS REACH - what does R stand for?: reproduce
20 Using DOGS REACH - what does E stand for?: energy
21. Using DOGS REACH - what does A stand for?: adapt
22. Using DOGS REACH - what does C stand for?: cells
23. Using DOGS REACH - what does H stand for?: homeostasis
24. List the eight levels of taxonomic classification in order - largest to smallest: Domain, Kingdom, Phylum, Class,
Order, Family, Genus, Species
25. What is binomial nomenclature? What does it include? Give an example: The scientific name for species using
Genus species ex : Homo sapiens (humans)
26. List the 3 Domains of life on Earth. Generally, who is in each domain?: 1. bacteria - bacteria 2. arches -
extramophiles
3. eukarya - eukaryotes (humans, plants, animals, fungi, protists)
27. List the 4 Kingdoms in the Domain Eukarya: 1. protista
2. fungi
