Biology 100 UNLV (Dr. Jef Jaeger)
Exam 1 Study Guide Questions and
Answers
What is life?
✓ ~~~ there is no definitive answer
what are the 7 characteristics of a living organism?
✓ ~~~ 1. adaptation and revolution
✓ 2. maintaining homeostasis
✓ 3.responds to the environment
✓ 4. the use of raw energy and material
✓ 5. grows and reproduce
✓ 6. composed of cells
✓ 7. contains nucleic acids, proteins, cards, and lipids
all cells come from where?
✓ ~~~ preexisting cells
define cells
✓ ~~~ smallest unit of life
define atoms
✓ ~~~ a unit of matter that cannot be Broken down further
define molecules
✓ ~~~ the smallest fundamental unit of chemical compounds
define unicellular
, ✓ ~~~ single cell
define multicellular
✓ ~~~ trillions of cells
define metabolism
✓ ~~~ all chemical reactions that occur within the cells of living things
Define homeostasis
✓ ~~~ Maintaining a stable internal environment
Define natural selection
✓ ~~~ organisms that inherit helpful traits to reproduce more successfully organisms
define adaptive traits
✓ ~~~ traits that help organisms survive and reproduce in its natural environment
Linnaean taxonomic system
✓ ~~~ From biggest to smallest: Domain, Kingdom, Phylum, Class, Order, Family, Genus,
Species.
the analogy for Linnaean
✓ ~~~ Do
Kings
Play
Chess
,On
Fine
Gold
Sand
the 3 domains in Linnaean Taxonomy
✓ ~~~ Bacteria
Archaea
Eukaryota
Why are viruses not alive?
✓ ~~~ no organelles
cannot make proteins
cannot reproduce on their own
What is the size of a virus?
✓ ~~~ 1/100 the size of a bacterial cell
what is the domain of a brown bear?
✓ ~~~ Eukarya
what is the kingdom of a brown bear
, ✓ ~~~ anamalia
what is the phylum of a brown bear?
✓ ~~~ chordata
what is the class of a brown bear?
✓ ~~~ mammalia
what is the order of a brown bear?
✓ ~~~ carnivora
what is the family of the brown bear?
✓ ~~~ Ursidae
What is the genus of a brown bear?
✓ ~~~ Ursus
What is the species of a brown bear?
✓ ~~~ artos
what is the scientific name of the brown bear?
✓ ~~~ Ursus arctos
what is the domain of a human?
✓ ~~~ Eukarya
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