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Biology

Living Organisms Viewed at Different Structures of Organization

The concept of organization is so fundamental to biology that the term organism can be applied to all living things. Organisms in Order   Atom An atom is the smallest component of an element that has the chemical properties of the element. All matter is composed of atoms. Molecules & Macromolecules Atoms bond with each other to form molecules. When …

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What is DNA Translation Simplified

Understanding the Basics of DNA Translation Translation involves an interpretation of one language into another. The language of mRNA, which is a nucleotide sequence, is translated into the language of a polypeptide, which is an amino acid sequence. To understand the process of translation, we will first examine the genetic code, which specifies the relationship between the sequence of nucleotides …

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What is DNA Replication Simplified

Understanding the Basics of DNA Replication DNA replication is a biological process that occurs in all living organisms and copies their DNA   DNA Replication Begins at an Origin of Replication An origin of replication is a site within a chromosome that serves as a starting point for DNA replication. At the origin, the two DNA strands unwind, and DNA …

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What is DNA Transcription Simplified

Understanding Why DNA Transcription is Necessary DNA is used as a template to make mRNA, which contains the information to make a polypeptide. DNA is indeed an information storage unit. For genes to be expressed, the information in them must be accessed at the molecular level. Rather than accessing the information directly, however, a working copy of the DNA, composed …

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What is Lactose Intolerance Simplified

Understanding Why Lactose Intolerance Exists With rare exceptions, the milk of all mammals contains lactose. A human with lactose intolerance can’t digest lactose because the intestinal enzyme lactase, is either inactive, absent, or present only in very small amounts. Symptoms of this condition don’t appear until a child is several years old. Milk is the sole food of most mammals …

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Gram Positive vs Gram Negative Bacteria Simplified

The trick to remembering the difference between gram positive and gram negative bacteria is to first understand where their naming convention comes from. I have an article follow by a mini game to teach you the difference between gram positive and gram negative bacteria. Gram positive bacteria are “positively” stained purple/blue when chemicals of the gram staining process bind to …

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Plant Cell Organelles Simplified

Examples of Organelles in Plant Cells Knowing the major organelles in a plant cell is important to learning the major functions carried out by cells plants. Central Vacuole In plants, the central¬†vacuole¬†is a membrane enclosed space in the center of the cell, and is filled with water. This vacuole often the largest structure inside the cell and keeps the plant …

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Animal Cell Organelles Simplified

Knowing the major organelles in an animal cell is important to learning the major functions carried out by cells in your body.

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