What Limits the Maximum Size of a Cell?

AI Thread Summary
The maximum size of a cell is limited primarily by the cell surface membrane, as exceeding its capacity can lead to cell rupture and death. While the nucleus plays a crucial role in regulating internal functions and growth, it indirectly influences the size of the cell membrane. The discussion highlights a common misunderstanding in biology where both the nucleus and the cell membrane are seen as limiting factors, but the membrane is the more immediate constraint. This question reflects the complexity of cellular biology and the interplay between different cellular components. Ultimately, understanding both perspectives is important for grasping cell size limitations.
sharkey1314
Messages
17
Reaction score
0

Homework Statement



The maximum size to which a cell may grow is limited by the cell's ?

Homework Equations



NIL

The Attempt at a Solution



It's a multiple-choice question... so i picked nucleus. My argument is that the nucleus controls the internal functions of the cell. However, according to the answers, it is cell surface membrane. Any reasons? Thanks a million in advance.
 
Physics news on Phys.org
This sounds like one of those questions where the answer depends of your frame of mind.

In your view, you have correctly stated that the nucleus limits the size a cell can grow to because it controls growth and everything like that. And that answer is perfectly acceptable in a biological way.

But, I can see why the cell membrane is stated as the answer - simply, if the cell tries to grow larger than it, it breaks and the cell dies. So yes, the cell membrane limits how large the cell can grow, but it is the nucleus which limits how large the membrane can be.

I wouldn't worry about this question, its just one of those crazy ones.
 
Thread 'Confusion regarding a chemical kinetics problem'
TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
Back
Top