This has to do with SURFACE TO VOLUME RATIO. For a typical small cell, its surface area to the volume ratio get smaller as the cell grows. This implies that, if the cell grows beyond a certain limit, then the amount of nutrients that entered the cell will be limited, that is , nutrients will not be able to migrate into the cell as needed. To avoid this, the cell has to divide to reduce its surface to volume ratio.<span />
Answer:
Companion cell is a type of specialized parenchyma cell, which is located in the phloem of the flowering plants.
Each of the companion cell is usually associated with the sieve element. The main function of the companion cell is uncertain but it regulates the activity of sieve tube.
It plays a major role in the loading and unloading of the sugar molecules into the sieve element. As the sieve tubes do not have nucleus and ribosomes so they need companion cell to help in the transportation of sugar molecules.
Answer:
Food web
Explanation:
food web:
a system of interlocking and interdependent food chains.
Answers –
1. Macroeconomics
2. Economic cycle
1. Macroeconomics refers to the study of the whole economy and how it behaves. It is a branch of the field of economics which carefully examines various economy-wide phenomena like, inflation, price levels, national income, GDP (gross domestic product), growth rate, and changes in unemployment.
2. The time from one economic peak to another economic peak is called the economic cycle. Like a roller coaster ride, the economic cycle is more or less like a behavioral pattern in the economy that consist of both growing and shrinking phases
