Question

37. Carbon dioxide cannot diffuse into the blood from an animal’s cells unless the blood has a ___________
concentration of carbon dioxide. (1 point)

Answer 1

38. Baby sea turtles hatch underground, automatically dig upward toward the sky, and scurry toward the
waves. This is an example of ________________ behavior. (1 point)

Answer 2

41. A person with darker skin produces more ____________________ than a person with lighter skin.
(1 point)

Answer 3

42. ____________________ are chemical messengers that allow an organ to send signals to another distant
organ in the body through the blood. (1 point)

Answer 4

43. When your body is infected with the cold virus, antibodies tag the pathogen’s ____________________,
which are found on their outer surface, for destruction by immune cells. (1 point)

Answer 5

can anyone help me I have done the rest of them just not these four so can someone please help

Answer 6

Why is it that you can't ask your teacher for help? You never did explain that earlier?

Answer 7

diffusion occur from high to low concentration so there sholud be low concentration of CO2 of blood. can this help

Answer 8

@Abhisar

Answer 9

Good job @1996nightrider ! that's correct!

Answer 10

Google works good

Answer 11

*sigh*

Answer 12

Google works well.

Answer 13

yes it does

Answer 14

can you help with the next one

Answer 15

37.Lower

Answer 16

41-melanin

Answer 17

42-hormones

Answer 18

Btw i am not allowed to give u direct answers

Answer 19

Aren't those direct answers??

Answer 20

right you are helping me

Answer 21

yes i just remembered that...so...i am sorry for that..

Answer 22

LOL

Answer 23

@Cynical1

Answer 24

There's a really people aren't supposed to just give direct answers...

Answer 25

reason* not really, pfff

Answer 26

yaah..i know that

Answer 27

Just a momentary lapse in judgment then ha

Answer 28

most of the time i dont....but its like i get 10s-20s requests for help at a time...so smtm it becomes hectic

Answer 29

well a big indicator that you're giving a direct answer is if you're not typing more than one word

Answer 30

43- what do u think should be the answer ?

Answer 31

@s17

Answer 32

Idk

Answer 33

okay..that's not a problem
I think this link would help u
https://en.wikipedia.org/wiki/Antigen-antibody_interaction