AP Biology 3.5 Free Energy and Molecular Building Blocks

AP Biology 3.5 Free Energy and Molecular Building Blocks. What is a dog's panting an example of?

AP BiologyFree Energy and Molecular Building Blocks
Common ancestryConserved core processes
Growth, reproduction, and maintenanceSystems require energy input
LanguageEnglish Language

Transcript

00:18

and hear The potential answers are positive Negative feedback in

00:21

a minute All right Well a fino typical variation simply

00:24

put refers to the variability and few types that exist

00:27

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

00:29

larger than a chihuahua and the nose of a collie

00:32

is way way longer than that of a pug So

00:36

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

00:39

mutation is a permanent alteration in the dna sequence that

00:42

makes up by jean Bye Bonzo here has one blue

00:45

eye and one green eye When why the chinese crested

00:47

dog is hairless But genetic mutation is not the reason

00:51

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

00:54

try Try again Now think of a feedback mechanism is

00:57

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

00:59

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

01:03

sweat plans begin to secrete a fluid all is well

01:06

and good except for one tiny detail Because we mentioned

01:08

before dogs do not have sweat plans so this positive

01:11

feedback mechanism cannot kick in to cool down our canine

01:13

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

01:18

a dog will use the largest gay patch of its

01:20

mouth to eliminate internal heat and bring its body temperature

01:23

back down to normal The correct answer is b always

01:26

remember that a negative feedback mechanism works to maintain homo

01:29

stasis in an organism by monitoring and controlling physiological processes

01:34

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