biology first exam prep

science

study of physical world and its manifestations

biology

study of life

scientific literacy

general evidence based understanding of the natural world

hierarchal organization

complexity of life builds upon smaller, smaller units; if smaller units do not function, the complex units will be impaired (feedback)

all powerful entity

someone or something placed life on this planet

spontaneous generation

life was a singular spontaneous event

gradual long term chemical and physical process

earth contains all necessary materials for life to form and evolve

monomers

assembly of small organic molecules like amino acids

polymers

joining together of monomers like proteins

protocells

membrane enclosed molecules, not living organism (doesn’t have nucleic acids and can’t replicate)

DNA

origin of self replicating molecules

stromatolites

mats of photosynthetic bacteria

archaen

ancient

prokaryotic

lack nucleus, known as bacteria, first cells on earth

eukaryotic

true nucleus and membrane bound organelles

what does kernal mean in “"before the kernal”

nucleus and the phrase is referring to prokaryotic

when did the universe originate

12-14 billion years ago

when did the planets form

4.6 billion years ago

how do you go from a toxic mixture of atmospheric gases to the first living organisms?

earth built itself with the raw materials the universe gave it

why are they called “protocells” and not cells

no nucleic acids and cannot replicate