BIOL3200 CHAPTER 5 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS GRADED A++
all of Earth's life forms are based on __________
carbon
autotrophs
CO2 is fixed and assembled into organic molecules
heterotrophs
organic molecules are acquired from outside, broken down for carbon, carbon
reassembled to make biomass
phototrophs
light as energy source
chemotrophs
obtain energy from chemicals; chemical electron donors are oxidized
lithotrophs
use inorganic molecules as a source of electrons
organotrophs
obtain electrons from organic compounds
we must have ____________ fixing bacteria/archaea to facilitate nitrogen into the
ecosystem
nitrogen-fixing
, most organisms are unable to use atmospheric nitrogen due to ____________
between two N atoms
triple bond
nitrogen fixing bacteria convert
nitrogen gas into ammonia (NH4+)
most bacteria and archaea divide by _______________
binary fission
binary fission
one parent cell splints into two equal daughter cells
____________ divides by budding
Hyphomicrobium
All bacterial and archaeal cells must ___________ and __________the genome
before division
replicate
segregate
3 phases of the bacterial cell cycle
1. Period of growth after cell is born
2. Chromosome replication and partitioning
3. Cytokinesis
growth rate
an expression of the increase in the size of an organism or population over a given
period of time
some Cyanobacteria divide by _______________
WITH COMPLETE SOLUTIONS GRADED A++
all of Earth's life forms are based on __________
carbon
autotrophs
CO2 is fixed and assembled into organic molecules
heterotrophs
organic molecules are acquired from outside, broken down for carbon, carbon
reassembled to make biomass
phototrophs
light as energy source
chemotrophs
obtain energy from chemicals; chemical electron donors are oxidized
lithotrophs
use inorganic molecules as a source of electrons
organotrophs
obtain electrons from organic compounds
we must have ____________ fixing bacteria/archaea to facilitate nitrogen into the
ecosystem
nitrogen-fixing
, most organisms are unable to use atmospheric nitrogen due to ____________
between two N atoms
triple bond
nitrogen fixing bacteria convert
nitrogen gas into ammonia (NH4+)
most bacteria and archaea divide by _______________
binary fission
binary fission
one parent cell splints into two equal daughter cells
____________ divides by budding
Hyphomicrobium
All bacterial and archaeal cells must ___________ and __________the genome
before division
replicate
segregate
3 phases of the bacterial cell cycle
1. Period of growth after cell is born
2. Chromosome replication and partitioning
3. Cytokinesis
growth rate
an expression of the increase in the size of an organism or population over a given
period of time
some Cyanobacteria divide by _______________
