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14 mar 2022 · Get free biology worksheets, notes, quizzes, and slides that you can download and print in PDF, PNG, and Google Classroom formats.
Revision Pack Topic 1- Cell Biology Label the below diagram with the terms: DNA, gene, nucleus and chromosome. Explain the relationship between these terms and compare them in terms of size. Body cells in multicellular organisms divide to produce new cells as a series of stages called the cell cycle. What is mitosis?
How Genes Work. 1 What are proteins and what do they do? Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs.
Cells can either differentiate once early on or have the ability to differentiate their whole life (these are called stem cells). In animals, most cells only differentiate once, but in plants many cells retain the ability. Examples of specialised cells in animals.
The study of cell biology – what cells are made of and how they work – can be applied to all living organisms. Genes are the instructions. Contained within every cell is DNA (deoxyribonucleic acid). Specific regions of this DNA, known as genes, carry the instructions for making cells. Passing on your genes
be long, genes are also assigned symbols, which are short combinations of letters (and sometimes numbers) that represent an abbreviated version of the gene name. For example, a gene on chromosome 7 that has been associated with cystic fibrosis is called the cystic fibrosis transmembrane conductance regulator; its symbol is CFTR.
Slide 1. Genetics, DNA, and Heredity. The Basics. What is DNA? It's a history book -a narrative of the journey of our species through time. It's a shop manual, with an incredibly detailed blueprint for building every human cell.
