Question and answer
can i get other reasons
Multi-cellular organisms are too big and not all of their cells have contact with the external environment. All organisms need to exchange substances with their environment - take in needed molecules and get rid of waste. [ A uni-cellular organism can use the processes of osmosis, diffusion and active transport to transport substances in and out of the organism, which is in this case just one
cell. But as organisms increase in size, they need a specialized transport system to exchange substances between the internal environment and the external environment. Interestingly enough, osmosis and diffusion are still the important mechanisms at the cellular level. ]
Get an answer
Original conversation
User: what is the need for a transport system in multicellular organisms

User: can i get other reasons





Weegy: Multi-cellular organisms are too big and not all of their cells have contact with the external environment. All organisms need to exchange substances with their environment - take in needed molecules and get rid of waste. [ A uni-cellular organism can use the processes of osmosis, diffusion and active transport to transport substances in and out of the organism, which is in this case just one cell. But as organisms increase in size, they need a specialized transport system to exchange substances between the internal environment and the external environment. Interestingly enough, osmosis and diffusion are still the important mechanisms at the cellular level. ]
Expert answered|Ronald0906|Points 45|

Question
Asked 10/15/2012 6:30:42 PM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
21,099,655 questions answered
Popular Conversations
Simplify 2(x - 4) + 7(x + 2). User: Simplify 2(x - 4) + 7(x + 2). ...
Weegy: 3(4x + 6) - 9x = 12x + 18 - 9x; = 3x + 18 User: Simplify 8 - (-5) - 4(-7). Weegy: 8 - (-5) - 4(-7) = 8 + 5 ...
5/27/2015 3:01:03 PM| 4 Answers
Simplify 11(2x + 3). 11x + 5 22x + 3 22x + 33
Weegy: 11(2x + 3) = 22x + 33 User: Simplify -3xy^3 + 7xy^3 + (-xy^3) + (-3xy^3). User: Simplify 2x + x. User: ...
5/27/2015 9:20:06 AM| 3 Answers
Simplify 8(3 - 2x). User: Simplify -2[9 - (x + 7)].
Weegy: -2[9 - (x + 7)] = -2(9 - x - 7) = -2(2 - x) = 2x - 4 User: Simplify -12x + 5x. -7 -7x -17x User: Simplify ...
5/27/2015 9:22:24 AM| 3 Answers
A line has a rise of 3 and a run of 12. What is the slope? User: A ...
Weegy: a.25 User: A line has a rise of 6 and a slope of 1/20. What is the run? 30 90 120 Weegy: A line has a rise ...
5/27/2015 12:32:19 PM| 3 Answers
Select all of the terms that are "like." xy2 2xy x2 -xy 2x2y User: ...
Weegy: 2xy, -xy, and xy are "like" terms. User: Simplify -4(N + 9). Weegy: -4(N + 9) = -4N - 36 User: Simplify ...
5/27/2015 9:17:54 AM| 2 Answers
Simplify (5b)(-3a). -35ab -15ab 2ab
Weegy: (5b)(-3a) = -15ab User: Simplify 9 - {x - (7 + x)}. User: What is the expression for "the difference ...
5/27/2015 9:27:00 AM| 2 Answers
Find the value of 21 - 18 ÷ 3 · 2. User: Simplify ...
Weegy: 6(-5)= -30 User: Simplify 6r · s · 4rt. 10rst 10r2st 24r2st Weegy: 6r · s · 4rt. = 24r2st. User: Evaluate ...
5/27/2015 9:35:13 AM| 2 Answers
Acid rain could be referred to as a _____________ phenomenon. a. ...
Weegy: Acid rain could be referred to as a natural phenomenon. User: When geographers observe moraines, they can ...
5/27/2015 11:21:09 AM| 2 Answers
Weegy Stuff
S
Points 759 [Total 767]| Ratings 1| Comments 749| Invitations 0|Offline
S
L
Points 706 [Total 1236]| Ratings 2| Comments 686| Invitations 0|Offline
S
1
Points 596 [Total 988]| Ratings 3| Comments 566| Invitations 0|Offline
S
L
P
Points 429 [Total 2906]| Ratings 1| Comments 419| Invitations 0|Offline
S
P
C
L
P
L
1
P
P
1
P
1
Points 248 [Total 8994]| Ratings 0| Comments 248| Invitations 0|Offline
S
Points 161 [Total 181]| Ratings 0| Comments 161| Invitations 0|Offline
S
1
L
L
Points 84 [Total 8267]| Ratings 0| Comments 84| Invitations 0|Offline
S
L
1
R
Points 80 [Total 1367]| Ratings 0| Comments 80| Invitations 0|Offline
S
L
Points 56 [Total 3810]| Ratings 2| Comments 36| Invitations 0|Offline
S
Points 13 [Total 13]| Ratings 0| Comments 13| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2015 Purple Inc.