AP Biology 3.5 Free Energy and Molecular Building Blocks

and hear The potential answers are positive Negative feedback in

a minute All right Well a fino typical variation simply

put refers to the variability and few types that exist

in a population It's Why a box or is much

larger than a chihuahua and the nose of a collie

is way way longer than that of a pug So

answer See is not what we're looking for A genetic

mutation is a permanent alteration in the dna sequence that

makes up by jean Bye Bonzo here has one blue

eye and one green eye When why the chinese crested

dog is hairless But genetic mutation is not the reason

why dogs pant when they're hot So the answer d

try Try again Now think of a feedback mechanism is

a siri's of checks and balances within an organism When

a dog's temperature rises its blood vessels dilate in the

sweat plans begin to secrete a fluid all is well

and good except for one tiny detail Because we mentioned

before dogs do not have sweat plans so this positive

feedback mechanism cannot kick in to cool down our canine

friends We need jake japan can't jake pants by panting

a dog will use the largest gay patch of its

mouth to eliminate internal heat and bring its body temperature

back down to normal The correct answer is b always

remember that a negative feedback mechanism works to maintain homo

stasis in an organism by monitoring and controlling physiological processes

Bottom line be grateful Humans have sweat otherwise that's not 00:01:38.048 --> [endTime] pretty