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Taking biology class online is now easy as never before. Just the submission of the queries and get ready to explore a whole new world of biology classes with different subtopics of biology courses online. If you want someone to take biology online, seeking for online biology classes you landed on the right website.

Biology is the study of living organisms.It is divided into many specialised fields that cover their morphology, anatomy, physiology, behaviour, origin, and distribution. Biology often overlaps with other sciences.For instance, biochemistry and toxicology with biology, chemistry, and medicine.

Another subject is the biophysics that is a combination of biology and physics; the subject stratigraphy is a combination of biology & geography. In addition to them, there is astrobiology with biology and astronomy. Social sciences such as geography, philosophy, psychology and sociology can also interact with biology and much more.

Biology Classifications


The discipline of biology is a vast subject. This is the reason why it is sub-divided into separate branches to make it easy for learning. Despite the visible and apparent differences, all sub-categories are inter-connected by the basic principle of biology. Here our online biology classes and courses discuss the sub-divisions of biology.


It deals with the study of microscopic organisms either unicellular (single cell), multicellular (cell colony) or acellular (lacking cells). For e.g. bacteria viruses, etc.


It is the science related to the animal kingdom. For e.g. humans apes lions, etc.


It is the branch of biology which deals with the description of plant life. For e.g. brassica, rose, lily, etc.


It is the branch of zoology related to the study of birds.


It is the study of fishes.


It is the science concerned with the study of fungi.It also including their genetic and biochemical properties.


It is the sub-branch of zoology that deals with the study of amphibians and reptiles.


It is science that discusses the insects.


It is the science that interprets the study of human, their past and present.

Marine Biology

It is the scientific study that unravels the mysteries and facts about seas and oceans.


It is the study concern of living organisms, systems or processes in the manufacturing and service industries.

Characteristics of life


Online college biology courses are available that explain the field of biology is based on two major worlds.The one is visible living things like humans, animals and plants, and another is invisible living things such as bacteria and viruses.

We all know about the fundamental unit of life which is the cell.


Our biology course tutors and experts describe cells as the fundamental unit of structure and function in a living organism. The human body is made of trillions of cells. Our biology experts inform that cells are responsible for structuring the human body. This biology online experts have stated the functions of the cell below:

  1. Takes nutrients from food
  2. Convert those nutrients into energy
  3. Carries out specialized functions are done by distinct part of the cell
  4. Cells are composed of many parts, and each of them has its function.

Structure of the cell

Cell  contains the following organelles.

  • Nucleus
  • Cytoplasm
  • Lysosomes and peroxisomes
  • Endoplasmic Reticulum (ER)
  • Cytoskeleton
  • Golgi apparatus
  • Mitochondria
  • Plasma membrane
  • Ribosome

Types of cells


Our online biology experts define the two principal categories of cells as




Characteristics of eukaryotes:

  • Eukaryotes cells are seen in animals,  humans,  and plants.
  • These cells consist of the nucleus, including cell membrane, cytoplasm, ribosome and DNA.
  • Most of these cells are multi-cellular.
  • These kinds of cells are much more complex than prokaryotic cells.
  • They can be just onmake up or makeup more complex multi-cellular organisms.



Characteristics of prokaryotes:

  • Prokaryote cells are a single-celled organism and mostly seen in bacteria.
  • These cells don’t have a nucleus, and their genetic material is not stored in the nucleus.
  • They have few organelle compared to eukaryotes.
  • Prokaryotic organisms are asexual which means they don’t need a partner to reproduce.

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Heredity and Genetics


Our biology experts describe genetics as the biological study that tells us about the heritable traits. This study illustrates on how heritable traits are transmitted from parents to offspring. On the other hand, this biology online experts describes heredity as the sum of all biological processes by which particular characteristics are transmitted from parents to offspring.

Difference between heredity and genetics


Genetics means the genes and heredity signifies inherited. Genetic disorder is not always inherited. To illustrate the point, our biology biology  s online experts share an example. Somatic mutations occur in the tissue but not in the gametes (eggs and sperms). Cancer is caused by these types of mutations. Most types of cancer are not hereditary.


Photosynthesis is defined by our biology biology online experts as the process of converting light energy into chemical energy of sugars and other organic compounds like Carbon dioxide (CO2), Water (H2O) and stored chemical energy in the form of sugar. The process starts with transferring of the electrons from water to energy-poor carbon dioxide molecules. After energy-rich sugar molecules are formed, water is oxidised, and the carbon dioxide is reduced. After that, light energy is used to drive the electrons from water to their more energetic states in sugar products. Finally, solar energy is converted into chemical energy.

Our biology s online services are designed to enhance your knowledge by illustrating the fundamentals of the photosynthesis process.

Principle theories of biology

The foundation of biology as it exists today is constructed on the basic principles. Our biology online experts give you a brief understanding of the principle theories underlying biology. For further details, avail our biology   online on this topic.

Cell theory

Our biology experts define cell theory as the concept that explains that cells are the primary unit of structure in every living being. This theory was developed during the mid 17th century by advances in microscopy. The theory justifies that new cells are formed from other existing cells and that cell is the fundamental unit of human structure.

Gene theory

It was introduced by a monk named Gregor Mendel in the 1860s. This theory is based on the concept that traits are passed from parents to offspring through gene transmission. Genes are located on chromosomes and consist of DNA. For further knowledge, contact our biology biology   services.


Our biology biology  s online experts analyse evolution as a genetic change in a population that is inherited over several generations. These changes may be small or big, noticeable or overlooked. If an event is considered to be an evolution, the changes have to occur at the genetic level of the population and passed on from one generation to another to the next.


Our biology biology  s online experts define homoeostasis as the ability to maintain a constant internal environment in response to environment changes. Homoeostasis is controlled by the nervous and endocrine systems through feedback mechanisms. These mechanisms involve various organs and organ systems. To illustrate the topic further, our biology writers define an example, body temperature control, pH balance, water and electrolyte balance, blood pressure and respiration.


It is the unifying principle of biology. This theory illustrates the concepts where energy is constant, and energy transformation is not entirely efficient.

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