BIO 1000 (Kearley) - Exam 2 Questions With Complete
Solutions
1st law of thermodynamics Correct Answers energy is never
gained or lost, but is only transformed. the earth has always had
the same amount of energy
2nd law of thermodynamics Correct Answers all energy
transformations are inefficient... the amount of usable energy in
the universe is decreasing and the amount of entropy (disorder)
is increasing
(usable energy is consistently decreasing)
3 stages of respiration Correct Answers 1. glycolysis
2. krebs cycle
3. electron transport chain
active site Correct Answers actual binding of the substrate only
requires a small part of the enzyme
active transport Correct Answers across biological membrane,
requires energy and transports proteins... moves a substance
against the concentration gradient (from low concentration to
high concentration)
aerobic respiration Correct Answers aerobic harvesting of
energy from cells by cells
all osmosis is diffusion but... Correct Answers not all diffusion
is osmosis
, amount of ATP per stage of respiration Correct Answers
glycolysis: 2 ATP
Kreb's cycle: 2 ATP
electron transport chain: 32 ATP
anaerobic respiration Correct Answers -doesn't use oxygen
-produces less ATP than aerobic
-products produced include lactic acid and alcohol
-we only use it for quick burst of energy
animal vs plant cell with osmoregulation Correct Answers
water can come into animal cells until they burst (because no
cell wall) but when a plant cell becomes full, water pressure
forces the cell membrane against the cell wall
autotrophs Correct Answers producers.. produce their own
food
1. plants
2. algae
3. bacteria
best pH for enzymes Correct Answers 6-8
blood cells in hypertonic solution Correct Answers shrivel
blood cells in hypotonic solution Correct Answers explode
chloroplasts Correct Answers contain chlorophyll and
accessory pigments... where photosynthesis takes place
Solutions
1st law of thermodynamics Correct Answers energy is never
gained or lost, but is only transformed. the earth has always had
the same amount of energy
2nd law of thermodynamics Correct Answers all energy
transformations are inefficient... the amount of usable energy in
the universe is decreasing and the amount of entropy (disorder)
is increasing
(usable energy is consistently decreasing)
3 stages of respiration Correct Answers 1. glycolysis
2. krebs cycle
3. electron transport chain
active site Correct Answers actual binding of the substrate only
requires a small part of the enzyme
active transport Correct Answers across biological membrane,
requires energy and transports proteins... moves a substance
against the concentration gradient (from low concentration to
high concentration)
aerobic respiration Correct Answers aerobic harvesting of
energy from cells by cells
all osmosis is diffusion but... Correct Answers not all diffusion
is osmosis
, amount of ATP per stage of respiration Correct Answers
glycolysis: 2 ATP
Kreb's cycle: 2 ATP
electron transport chain: 32 ATP
anaerobic respiration Correct Answers -doesn't use oxygen
-produces less ATP than aerobic
-products produced include lactic acid and alcohol
-we only use it for quick burst of energy
animal vs plant cell with osmoregulation Correct Answers
water can come into animal cells until they burst (because no
cell wall) but when a plant cell becomes full, water pressure
forces the cell membrane against the cell wall
autotrophs Correct Answers producers.. produce their own
food
1. plants
2. algae
3. bacteria
best pH for enzymes Correct Answers 6-8
blood cells in hypertonic solution Correct Answers shrivel
blood cells in hypotonic solution Correct Answers explode
chloroplasts Correct Answers contain chlorophyll and
accessory pigments... where photosynthesis takes place
