EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

There are three “rules” that are universally accepted as parts to the cell theory. However, there are some exceptions to the cell theory. Which of the following is an exception?

A	All living things are made up of cells
B	Cells are the basic structural and functional units of life
C	Cells come from pre-existing cells
D	Mitochondria and chloroplasts are self-replicating and can reproduce independently

Explanation:

Detailed explanation-1: -1) All organisms are made of cells. 2) All existing cells are produced by other living cells. 2) All existing cells are produced by other living cells. 3) The cell is the most basic unit of life.

Detailed explanation-2: -Presence of extra-chromosomal DNA: Mitochondria and chloroplasts are exceptions as they have their own genetic material and can reproduce independently.

Detailed explanation-3: -The correct option is C All cells are surrounded by cell wall. Schleiden, Schwann and Virchow contributed to the formation of cell theory. It states that: All living beings are made up of one or more cells.

Detailed explanation-4: -Which organism is considered an exception to the cell theory because it has a noncellular structure? 33. Viruses are exceptions to the cell theory, but they have some characteristics of living things.

There is 1 question to complete.