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...
How a Tumour Forms Cancers demonstrate how important it is that?cell division?is?precisely controlled, as cancers arise due to?uncontrolled mitosis Cancerous cells divide repeatedly and uncontrolla...
The Significance of Stem Cells A?stem cell?is a cell that can?divide?(by mitosis) an?unlimited number of times Each new cell (produced when a stem cell divides) has the potential to?remain a stem c...
The Significance of Telomeres The?ends?of the chromatids in chromosomes are ‘sealed’ with?protective structures?called?telomeres They are made of?non-coding DNA?(DNA that does not contain genes) th...
