BIO 1500 FINAL MIZZOU UPDATED VERIFIED
QUESTIONS WITH CORRECT ANSWERS (2026)
●● O2 levels in atomosphere
Answer: cyanobacteria and green algae chloroplasts contributed....
through photosynthesis
●● oldest fossils
Answer: 3.5-4 bya
●● 1st insects
Answer: 480 mya
●● 1st dinosaurs
Answer: 240 mya
●● dinosaurs go extinct
Answer: 66 mya
●● 1st homosapiens
Answer: 200k ya
,●● diffusion
Answer: mvmt of molecules from high to low concentration
-driven by Brownian (thermal) mvmts
●● each molecule during diffusion
Answer: -moves randomly
-behavior unpredictable
-each individual molecule never stops moving
●● net movement of molecules in diffusion
Answer: -from high to low conc.
-predictable
-stops when it reaches equlibrium
●● Photosynthesis
Answer: -light energy is used to make carbs from CO2 and water
-takes place in chloroplasts
●● chloroplasts
Answer: -contain the pigment chlorophyll
-chlorophyll absorbs red, blue, & violet light
, ●● step 1 of photosynthesis
Answer: -light reactions
-ATP is synthesized, NADPH is generated
-water is split apart, releasing O2 as a by product
●● ATP
Answer: -used to transport E around cells
-chemical E stored in the bonds
-important bonds between 2nd and 3rd phosphate group
-going to lower energy state breaks bonds and releases the energy
●● step 2 of photosynthesis
Answer: -light independent reactions
-E from ATP & NADPH are used to build glucose from CO2 & water
(Carbon Cycle)
●● Great Oxygenation Event
Answer: -3 -2.3 bya
-cyanobacteria evolved photosynthesis
-free O2 as a side effect... led to some O2 levels in atmosphere
QUESTIONS WITH CORRECT ANSWERS (2026)
●● O2 levels in atomosphere
Answer: cyanobacteria and green algae chloroplasts contributed....
through photosynthesis
●● oldest fossils
Answer: 3.5-4 bya
●● 1st insects
Answer: 480 mya
●● 1st dinosaurs
Answer: 240 mya
●● dinosaurs go extinct
Answer: 66 mya
●● 1st homosapiens
Answer: 200k ya
,●● diffusion
Answer: mvmt of molecules from high to low concentration
-driven by Brownian (thermal) mvmts
●● each molecule during diffusion
Answer: -moves randomly
-behavior unpredictable
-each individual molecule never stops moving
●● net movement of molecules in diffusion
Answer: -from high to low conc.
-predictable
-stops when it reaches equlibrium
●● Photosynthesis
Answer: -light energy is used to make carbs from CO2 and water
-takes place in chloroplasts
●● chloroplasts
Answer: -contain the pigment chlorophyll
-chlorophyll absorbs red, blue, & violet light
, ●● step 1 of photosynthesis
Answer: -light reactions
-ATP is synthesized, NADPH is generated
-water is split apart, releasing O2 as a by product
●● ATP
Answer: -used to transport E around cells
-chemical E stored in the bonds
-important bonds between 2nd and 3rd phosphate group
-going to lower energy state breaks bonds and releases the energy
●● step 2 of photosynthesis
Answer: -light independent reactions
-E from ATP & NADPH are used to build glucose from CO2 & water
(Carbon Cycle)
●● Great Oxygenation Event
Answer: -3 -2.3 bya
-cyanobacteria evolved photosynthesis
-free O2 as a side effect... led to some O2 levels in atmosphere
