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What is life?
Lecture on life
57
Biology
Undergraduate 2
09/15/2013

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Cards

Term
Life on Earth shares a common?
Definition
Chemistry
Term
What are the big four elements of life?
Definition
carbon, hydrogen, oxygen, and nitrogon
Term
Organisms are composed of?
Definition
cells
Term
What are the ways organisms can be composed of cells?
Definition
Unicellular, multicellular, colonial
Term
What are the two types of cells?
Definition
Prokaryotes and Eukaryotes
Term
Why are camel red blood cells nucleated?
Definition
Most red blood cells abandon a nucleus when they become biconcave. Camel red blood cells remain ovular in order to have the ability to hold copious amounts of water without rupturing. This allows them to keep their nucleus.
Term
All organisms attempt to gain and retain...?
Definition
Homeostasis
Term
Organisms undergo _____ processes
Definition
metabolic
Term
What drives metabolism?
Definition
Enzymes
Term
What metabolic process breaks down things for use?
Definition
Catabolism
Term
What metabolic process builds proteins?
Definition
Anabolism
Term
All life has spans and cycles? T or F
Definition
true
Term
How does life originate?
Definition
From other life
Term
What must occur to living organisms before maturity?
Definition
Growth and development
Term
What does biological maturity mean?
Definition
Capable of reproduction
Term
What stage is most of an organism's life spent in and why?
Definition
Maturity, for maximum reproduction
Term
What stage does an organism enter after maturity?
Definition
decline
Term
What is the final event of a living thing?
Definition
Death
Term
All organisms compete in a conquest for...? What is the main source of this?
Definition
Energy, the sun
Term
Organisms are capable of responding to...
Definition
Stimulus
Term
Organisms have a common? (2 things)
Definition
genetic code and evolution
Term
What is the organization and naming of organisms?
Definition
Taxonomy
Term
Name the 6 kingdoms of life and what they are
Definition
Archaea - ancient bacteria that live in harsh conditions
Eubacteria - bacteria
Protista- unclassified
Plantae - photosynthetic multicellular
Fungi - heterotrophic, not plants
Animalia
Term
What are plant like protists? Why are they considered plant-like?
Definition
Algae, presence of chlorophyll and photosynthesis
Term
What are animal like protists? An example?
Definition
protozoans, amoeba
Term
What is color defined as?
Definition
pigmentation or lack thereof, special properties of light
Term
What is most common pigment? What does it color?
Definition
melanin, eyes skin and hair
Term
What organisms do not have pigments?
Definition
Protists, and many larvae
Term
What color pigments do birds not have? How is this possible?
Definition
Blue, light causes blue
Term
Why do organisms have color?
Definition
camouflage and patterns for protection
Term
What is a practice where one organism copies another?
Definition
mimicry
Term
What are defining traits of males that attract females?
Definition
Sexual Dimorphism
Term
What type of shape is no definite body shape?
Definition
Asymmetry
Term
What type of shape is body parts extending out identically like a wheel?
Definition
Radial symmetry
Term
What type of shape is two divided parts look alike?
Definition
Bilateral Symmetry
Term
What is splitting in half to reproduce?
Definition
Binary fission
Term
What is using spores or chipping off from the original to reproduce?
Definition
Asexual reproduction
Term
What is reproduction that invites variety?
Definition
Sexual
Term
Organism that has both sexes in one body?
Definition
Monoecious
Term
Organisms that has only one sex in its body?
Definition
Dioecious
Term
what is it called when an organism uses sulfur and other chemicals to metabolize?
Definition
Chemosynthesis
Term
What were two of the most important events in the history of diversity of life on Earth?
Definition
Aerobic Respiration and Sexual reproduction
Term
What is an organism's ability to grow back lost body parts?
Definition
regeneration
Term
What is an organism's ability to reform if split apart?
Definition
Reconstruction
Term
What is an organism that produces its own food?
Definition
Autotroph
Term
Are carnivorous plants autotrophs or heterotrophs?
Definition
Autotrophs, but they supplement their own resources with insects
Term
What is an organism that consumes food?
Definition
Heterotroph
Term
What are the three types of heterotrophs and what do they eat?
Definition
Herbivores - plant material
Carnivore - meat
Omnivore - mix of both
Term
What does free living mean?
Definition
Free to move
Term
What does sessile mean?
Definition
attached to a substance
Term
What do sessile adults usually start as?
Definition
Free moving larvae
Term
What is an intimate relationship between two organisms?
Definition
Symbiosis
Term
What is an organism that lives in a host at the host's expense?
Definition
Parasite
Term
What is an ectoparasite?
Definition
Organism that lives on the outside and can be a vector for disease
Term
What is an endoparasite?
Definition
Organism that lives inside the host
Term
What is commensal symbiosis?
Definition
Relationship that neither helps nor hurts
Term
What are organisms that benefit each other?
Definition
Mutual symbiotics
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