CIE A Level Biology復習筆記7.1.3 Xylem Vessels Elements
Xylem Vessel Elements: Structure & Function The functions of?xylem?tissue in a plant are: Vascular tissue that?transports?dissolved minerals and water around the plant Structural?support Food s...
CIE A Level Biology復習筆記7.1.2 Xylem & Phloem Distribution
Xylem & Phloem Distribution Xylem The functions of?xylem?tissue in a plant are: Vascular tissue that carries?dissolved minerals?and?water?up?the plant Structural support Food storage Xylem tiss...
CIE A Level Biology復習筆記7.1.1 Plant Transverse Sections
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...
CIE A Level Biology復習筆記6.2.5 Gene Mutations
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 ...
CIE A Level Biology復習筆記6.2.4 Transcription
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...
CIE A Level Biology復習筆記6.2.3 Constructing Polypeptides
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...
CIE A Level Biology復習筆記6.2.2 The Universal Genetic Code
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...
CIE A Level Biology復習筆記6.2.1 From Gene to Polypeptide
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...
CIE A Level Biology復習筆記6.1.4 The Structure of RNA
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...
