« previous next »

Author Question: Which of the following is the smallest closed system? A) a cell B) an organism C (Read 655 times)

Hawke

  • Hero Member
  • *****
  • Posts: 679
on: Jun 10, 2013
Which of the following is the smallest closed system?
A) a cell
B) an organism
C) an ecosystem
D) Earth
E) the universe


coco

  • Hero Member
  • *****
  • Posts: 739
Reply #1 on: Jun 11, 2013
It's most likely E. It makes sense given what's in the textbook.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Hawke

  • Hero Member
  • *****
  • Posts: 679
Reply #2 on: Jun 12, 2013
Thanks, and your suggestion was right.


« previous next »
 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Two mechanisms that affect cell shape and movement. Two mechanisms that affect cell shape and movement.
human nervous system human nervous system
biology 30 - Cell Division biology 30 - Cell Division
The digestive system. The digestive system.
Control of the cell cycle by cyclin-dependent kinases, and the checkpoints at which they operate Control of the cell cycle by cyclin-dependent kinases, and the checkpoints at which they operate
A system absorbs 623 J of heat while doing 457 J of work. What is the value of U? A system absorbs 623 J of heat while doing 457 J of work. What is the value of U?
Video: Resting membrane potential - electrical polarity and maintenance requirements

For a complete list of videos, visit our video library