BIOL 2030 Exam 3 Study Guide | Biology Practice Questions & Answers

BIOL./2030./Exam./3


Countercurrent./exchange./in./fish./gills./is./valuable./because./it
./helps./to./maximize./_________.
Select./one:
osmosis.
diffusion.
active./transport./of./oxygen.
blood./pressure.
water./flow../-./correct./answer./B./diffusion


Sponges,./cnidarians,./and./flatworms./lack./a./specialized./gas./
exchange./surface./because./_________.
Select./one:
a../they./live./underwater.
b../they./do./not./need./very./much./oxygen.
c../nearly./all./of./their./cells./are./in./direct./contact./with./the./e
xternal./environment.
d../they./are./too./small./for./circulatory./system./to./operate./wel
l.

, e../they./have./no./organs../-./correct./answer./c


Humans./exposed./to./significant./amounts./of./second./hand./cig
arette./smoke./may./be./more./susceptible./to./lung./cancer../Sup
pose./a./salamander./was./similarly./exposed./to./second./hand./s
moke../What./might./be./the./most./likely./effect?
Select./one:
Low./oxygen./concentrations./in./the./blood.
Skin./cancer.
Nicotine./addiction.
Lung./cancer.
The./amphibian./equivalent./of./hypertension./(high./blood./pres
sure)../-./correct./answer./b../skin./cancer


What./process./makes./it./possible./to./pull./water./up./the./xyle
m./tubes?
Select./one:
Surface./tension
Adhesion
Gravity
Vapor./pressure