BSC 2010 (IRSC) FINAL EXAM QUESTIONS AND
100% CORRECT ANSWERS
Requirements for natural selection
individual variation, variation must affect reproductive success, variation must have a genetic
basis
Genetic drift
random fluctuations in allele frequencies over time due to chance
Scientific theory
a well established concept backed up by tests
What happens during crossing-over?
Differences between passive transport and active transport
passive: "just happens" due to a concentration gradient active: requires ATP
polymer
long molecules built by linking monomers
monomer
small, similar subunits to polymers
polymers and their monomers
carbohydrates-monosaccharides
nucleic acid-nucleotide
protein-amino acids
Is a lipid a polymer?
no
M 1 vs M 2
M1 creates two cells M2 creates four cells, M1 has synapsis and crossing over and M2 doesn't
M1 separates homologous chromosomes M2 separates sister chromatids
nucleus
repository of DNA
plasma membrane
protects the cell
, cell wall
structural support
cytoplasm
suspends organelles
plasmodesmata
transport and communication
mitochondria
generate ATP
central vacuole
storage and maintenance of turgor pressure
golgi apparatus
transports material in and out of the cell
chloroplast
light energy harvested for photosynthesis
nuclear envelope
control passage in and out of nucleus
nucleolus
were ribosome construction begins RNA
rough ER
proteins are secreted
smooth ER
synthesis of lipids
peroxisome
detoxify hydrogen peroxide that is produced
ribosome
protein synthesis
lysosome
digestive enzymes that catalyze the breakdown of macromolecules
100% CORRECT ANSWERS
Requirements for natural selection
individual variation, variation must affect reproductive success, variation must have a genetic
basis
Genetic drift
random fluctuations in allele frequencies over time due to chance
Scientific theory
a well established concept backed up by tests
What happens during crossing-over?
Differences between passive transport and active transport
passive: "just happens" due to a concentration gradient active: requires ATP
polymer
long molecules built by linking monomers
monomer
small, similar subunits to polymers
polymers and their monomers
carbohydrates-monosaccharides
nucleic acid-nucleotide
protein-amino acids
Is a lipid a polymer?
no
M 1 vs M 2
M1 creates two cells M2 creates four cells, M1 has synapsis and crossing over and M2 doesn't
M1 separates homologous chromosomes M2 separates sister chromatids
nucleus
repository of DNA
plasma membrane
protects the cell
, cell wall
structural support
cytoplasm
suspends organelles
plasmodesmata
transport and communication
mitochondria
generate ATP
central vacuole
storage and maintenance of turgor pressure
golgi apparatus
transports material in and out of the cell
chloroplast
light energy harvested for photosynthesis
nuclear envelope
control passage in and out of nucleus
nucleolus
were ribosome construction begins RNA
rough ER
proteins are secreted
smooth ER
synthesis of lipids
peroxisome
detoxify hydrogen peroxide that is produced
ribosome
protein synthesis
lysosome
digestive enzymes that catalyze the breakdown of macromolecules
