Question

Bio is dead again.. :/
What is the correct order of levels of organization in an organism, from the least complex to the most complex?

A.
organ→ system → tissue→ cell

B.
tissue → organ → cell → system

C.
system → tissue → organ → cell

D.
cell → tissue → organ → system
Me thinks it's D.. ♥

Answer 1

Well, a tissue is formed by cells. Two or more kinds of tissues make up an organ. Specialized organs working together make up an organ system. So, based on that logic, D is the correct answer. You were right, readergirl12! :D
You can use this site to understand the process better. It contains a pictured of how the process works.

http://www.dummies.com/how-to/content/building-the-body-from-atoms-to-organs.html

Answer 2

Thanks.. Could you help me with a few more? c:

Answer 3

Sure! No problem. Which ones do you need help with?

Answer 4

Just some involving the muscular and skeletal systems ..;-;

Answer 5

Sure! May I see the question? :D

Answer 6

Select the item if it helps organisms keep their shape.

A.
nerve tissue

B.
heart

C.
skin I picked A...

Answer 7

Skin keeps what should be inside the organism inside and what should be outside the organism outside. Therefore, the answer is C. :D

Answer 8

Which statement best describes how muscles help the body move?

A.
The tendon of a muscle pulls on a bone.

B.
The ligament pulls on the muscle attached to the bone.

C.
The muscle pushes against a joint.

D.
One muscle pulls on another muscle. Is it B?

Answer 9

I was unsure on this one and actually had to do some research to make sure. Certainly, it is between A and B. My research led me to believe that A is the answer. However, I can't be completely sure. I hope this helps anyway! :D