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Study Cell Biology by Distance Learning
An essential foundation course for all people interested in human health, animal care and animal studies. The cell is the basic unit of life. Its knowledge is most essential to understand how life works for higher animals and plants.
Cell biology is an introductory course designed for everyone wanting to learn more about biology. This is a foundation course for those wishing to have a career in health sciences, biology and biochemistry. Upon completion of this course students should have a sound understanding of cell structure and processes.
"The course was better than I expected" "I am studying a Bachelor of Health Science next year at university. I gained far more knowledge from this course than I expected." J.McEwanWhat is a Cell?
"The word cell is derived from the Latin “cella” which means “small room”. Cells are the units from which all living organisms are built. Some organisms (e.g. bacteria) have only one cell in the entire organism. Others are multicellular. A human body can contain an estimated 100,000 billion cells.
Each cell is a self-contained and partially self-sufficient compartment designed to carry out a limited series of functions. While the structure and function of cells is extremely variable, their basic structure is similar. All cells are bound by an outer membrane and contain cytoplasm and DNA."
There are 10 lessons in this course:
Each lesson culminates in an assignment which is submitted to the school, marked by the school's tutors and returned to you with any relevant suggestions, comments, and if necessary, extra reading.
The following are the key points of Cell Theory:
1. All known living organisms are composed of one or more cells.
2. All cells are derived from previously existing parent cells.
3. Cells contain genetic information that controls the cell’s functions.
4. Genetic information is duplicated and transmitted from parent cells into any new cells.
PROKARYOTIC AND EUKARYOTIC CELLS
There are two main types of cells:
Prokaryotes or prokaryotic cells do not have a nucleus, or membranes surrounding their organelles. Their DNA is not organised into chromosomes, but is a single molecule, most often circular. Prokaryotes include bacteria and other organisms known as archae.
Eukaryotes or eukaryotic cells have membranes surrounding the nucleus and organelles. This effectively divides the cell into distinct compartments that perform distinct functions. Their DNA is organised into linear chromosomes. The cells that make up the human body, other animals and also plants are eukaryotic.
CELL SIZE ans SHAPE
The size of a cell can vary considerably. Some of the smallest recorded living things are single cell organisms with cell sizes as small as 250 nm (nanometre), while a nerve cell in a giraffe may stretch to several meters. The importance of cell size matters due to simple geometry. Basically a cell must transport materials in and out through a membrane.
The larger the cell, the smaller the surface area to volume ratio.
The smaller the cell, the larger the surface area to volume ratio.
When a cell reaches a certain size, the surface area will not be able to keep up with the needs of the cell and growth will cease.
So how does nature compensate for cells which need to be large such as the giraffe’s nerve cell? There a few different ways to achieve this, the first is to change the shape. Not all cells are spherical in shape, a nerve cell is very long and very thin. This increases the surface area to volume ratio dramatically. Another other way of sustaining a large cell is by including food within the cell. This is common in cells that are going to divide, giving rise to multicellular organisms. As a cell grows it divides into two, then four so on, giving a much larger surface area to ratio.
If you are an Irish citizen you may be eligible to receive financial support, meaning you can defer payment of your course fees. Additionally, if you are a resident of Ireland, you may also be eligible to receive a student grant under the Student Grant SchemeStudent support
We live in a society where the pressures of daily living are high with financial expenses, personal and work commitments, and mortgage and rental obligations. Then there are the unexpected life challenges that also get thrown our way. With this in mind the thought of taking on study can be daunting for most people. Here at Learning Cloud we understand that life doesn’t run in a straight line it has many ups and downs.
As an enrolled student at Learning Cloud, you are entitled to access a variety of non-academic support services from the Student Services Unit. These supports are designed to walk beside you throughout your studies they will assist you in life’s ups and downs to provide you the best opportunity to successfully complete your chosen course.
STUDENT SERVICES PROGRAMS INCLUDE:
Want more information about financial and student support? Fill out the enquiry form to the right and a study consultant will contact you with the details you need.
How will this course advance my career?
Learning Cloud programs have been developed in response to industry demand and are specifically designed to equip graduates with work-ready skills. Each participant will be trained and assessed in theory and in practical tasks and Real-world exercises are used throughout the program.
Studies prove, time and again, that college-educated workers earn more than those with only a high school qualification. College graduates often enjoy additional benefits, including greater job opportunities and promotions. Though the proof for greater earning potential exists, some might wonder whether the cost of the education warrants the overall expense in the long run.
College Graduate vs. Non-Graduate Earnings
The National Centre for Education Statistics (NCES) analyses employee earnings data biennially, according to education level. Findings indicate that workers with a qualification earn significantly more than those without. Since the mid-1980s, education has played a large part in potential wages, with bachelor's degree holders taking home an average of 66% more than those with only a high school diploma do. While college-educated workers' wages have increased over the past two decades, those with only a high school education have seen decreases in annual salaries in the same time period (nces.ed.gov).
How else will I benefit from studying with Learning Cloud?