1. during the exchange of air in your lungs, oxygen is being taken into your bloodstream while this substance is being released

microorganisms
carbon dioxide***
plasma
mucus
2. the gas exchange of oxygen to the bloodstream takes place in what part of respiratory system?
pharynx
bronchiole
alveoli**
trachea
3. maintaing a healthy weight allows the resportory system to work more effectivly because
oxygen is being delieverd more adequately ***
the heart does not have to pump as forcefully
the capillaries are constricted
the lung capacity allows for small amounts of air
4. if you choose to smoke your body will use this substance less efficiently.
microorganisms
carbon dioxide
plasma
oxygen****

54 answers

I believe your answers are right.

All of them

There all correct

your answers are correct I checked them.

1. B
2. C
3. A
4. D

D. A. C. B.

Just took this test and got a 100% with the answers

1. B

2. C

3. A

4. D

You were right pacman

Packman and Middnight are right :)

yup they're right! :)

Thanks!¢¾

zelda be a troll
dont listen to her

Ya they're all right, Zelda can suck it.

cmon guys

midnight is 100% right

it is right

b
c
a
d

For connections this year it is
b
c
a
d

B, C, A, D. is correct FOR CONNEXUS STUDENTS!!

yup b, c, a, d,

Middnight is 100% I'm also a Connexus student so it was a hard decision guys no trollers please

B,C,A,D is correct. I got 100%

b,c,a,d

The answers B, C, A, D are still correct for 2018

its definitely BCAD

b
c
a
d
100

@Pacman is correct!

@ Anonymous i agree with @OttoTheOtter
And thanks Pacman

Thanks, had trouble on 3

1. B
2. C
3. A
4. D

Thanks @Hal

sanks

Be nice to Zelda she just put the answers backwards say it was a.b.c.d. Zelda put d.c.b.a.

G
that is not appropriate.

op has correct answers

Pac-Man is right thankssssssss

Thank you Pac-Man lol

Ummmm.... Can we get anonymous banned plz?

1.4.8 - Quiz: Human Respiratory System Quiz

#1. B - carbon dioxide

#2. C - alveoli

#3. A - oxygen is being delivered more adequately

#4. D - oxygen

Btw to answer what @emo4life is talking about is that Zelda is a character from webtoon called Down To Earth. The series is pretty lit and got featured so every webtoon fan knows about it. :)

zelda, when you try to troll, don't just reverse the damn answers
*W H E E Z E*

The answers are
1.) B
2.) C
3.) A
4.) D
Trust me I got a 100%!!!

pacman is correct for 2021

B,C,A,D is still correct for 2022

btw, what anonymous said about zelda, ABSOLUTELY NOT OKAY.

i like bread

I also like bread

1.) carbon dioxide
2.) alveoli
3.) oxygen is being delivered more adequately
4.) oxygen

good thing I came here to check my answers I would've gotten 50% thanks so much, everyone!

No name is right just took it.

Helo there

Tysm No name!!!
No Name is 100%%%

1. carbon dioxide

2. alveoli

3. oxygen is being delivered more adequately

4. oxygen

Unit 6 Lesson 4 Human Respiratory System
BCAD
1. carbon dioxide

2. alveoli

3. oxygen is being delivered more adequately

4. oxygen

1. carbon dioxide

2. Alveoli

3. Oxygen is being delivered more adequately.

4. oxygen

These are in word form for all the people who have mixed up questions

BCAD is correct April 2023