Answer: Scientists think that early amphibians had lungs becuase they needed efficient oxygen uptake to support their metabolism. Higher rates of metabolism are needed on land, becuase of this scientist think that early amphibians breathed air with lungs.
Explanation:
Answer:
All organisms are composed of cells that share a structural organization and play roles in similar biological processes.
Explanation:
All living organisms can be grouped in terms of cellular organization, functioning, and structure. These features enable us to define them as “subjects” of life. Organisms share basic biological mechanisms such as, among others, growth, homeostasis, development, energy processing, reproduction, etc. Moreover, life is also defined by the presence of essential biomolecules such as DNA, RNA, proteins and lipids. Finally, the cell is considered to be the basic unit of every life form, and organisms may be formed by one (unicellular) or more cells (multicellular). The fundamental feature of the cell is the presence of a membrane that separates it from the external environment, thereby defining its internal environment.
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Explanation:
lmk if u need any more help the pic is attached!
Answer:
can you explain more please. I think you are talking about the Big Bang Theory but i don't understand you question.
Explanation:
The equation to calculate the surface area is 4πr²
The equation to calculate volume is 4/3πr³
<u>Explanation:</u>
The shape of the cell is in the form of a sphere.
The surface area of the cell can be calculated by the formula =
The volume can be calculated by the formula =
Given,
The surface area of the cell is 24μm²
4πr² = 24μm²
Radius, r can be calculated from the above equation.
The volume of the cell is 8μm³
4/3πr³ = 8μm³
We can calculate radius, r from the above equation.
Therefore, the equation to calculate the surface area is 4πr²
The equation to calculate volume is 4/3πr³