Transverse Sections: Stems, Roots & Leaves Dicotyledonous (dicots) plants Dicotyledonous (dicots) plants have: Seeds that contain two cotyledons (seed leaves) Network of veins Leaves that typic...
Gene Mutations & Their Effect on Polypeptides A gene mutation is a change in the sequence of base pairs in a DNA molecule that may result in an altered polypeptide Mutations occur continuously ...
Template & Non-Template Strands In the transcription stage of protein synthesis, the section of the DNA molecule where the gene is located (the gene coding for a particular polypeptide) unwinds...
Constructing Polypeptides: Transcription & Translation A gene is a sequence of nucleotide bases in a DNA molecule that codes for the production of a specific sequence of amino acids, that in tu...
The Universal Genetic Code A gene is a sequence of nucleotide bases in a DNA molecule that codes for the production of a specific sequence of amino acids, that in turn make up a specific polypeptid...
From Gene to Polypeptide A gene is a sequence of nucleotides that forms part of a DNA molecule (one DNA molecule contains many genes) This sequence of nucleotide bases (the gene) codes for the prod...
RNA Structure Like DNA, the nucleic acid RNA (ribonucleic acid) is a polynucleotide – it is made up of many nucleotides linked together in a long chain Like DNA, RNA nucleotides contain the nitroge...
Semi-Conservative DNA Replication DNA replication occurs in preparation for mitosis, when a parent cell divides to produce two genetically identical daughter cells – as each daughter cell contains ...
DNA Structure The nucleic acid DNA is a polynucleotide – it is made up of many nucleotides bonded together in a long chain A DNA nucleotide DNA molecules are made up of two polynucleotide strands l...
Nucleotide Structure Nucleic acids such as DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are macromolecules (giant molecules) Like proteins (polypeptides) and carbohydrates (polysaccharide...
Mitosis in Root Tips: Observing & Drawing Growth in plants occurs in specific regions called meristems The root tip meristem can be used to study mitosis The root tip meristem can be found just...
Mitosis: The Stages Mitosis is the process of nuclear division by which two genetically identical daughter nuclei are produced that are also genetically identical to the parent cell nucleus (they h...
