scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 874
All living organisms are composed of cells A cell is a small membrane-bound compartment that contains all the chemicals and molecules that help support an organisms life An understanding of the structure of cells is one of the first steps in comprehending the complex cellular interactions that direct and produce life Cells can be thought of as building blocks of organisms Some organisms are composed of a single cell Others like ourselves are composed of millions of cells that work together to perform the more complex functions that make us different from bacteria It is difficult to imagine that humans are descendants of a single cell but this is a common belief in the scientific world Before we can understand how multiple cells can work together to create complex biological functions it is necessary to understand what biological functions single cells are capable of performing on their own to sustain life There are different types of cells with individuated structures Single-celled organisms have different cell structure than multi-celled organisms and plant cells have different structures from animal cells These differences reflect differences in the functions that each of these classes of cells is required to perform Metabolism is the process by which living organisms acquire energy from external sources and utilize it internally in order to carry out necessary cellular activities Respiration is a means of acquiring energy through biological degradation of food molecules Cellular reproduction is a process by which cells duplicate their contents and then divide to yield two cells with similar if not duplicate contents Understanding this process is helpful in understanding the basis for human reproduction as well as the basis for the generation of life in other classes of organisms Cell reproduction does not always result in new independent cells It is also essential to growth and development as well as in the day-to-day maintenance of many human cells These processes are responsible for creating two different
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA