Classification of Living Organisms
Characteristics of Living Organisms Movement: action by an organism or part of an organism causing a change of
Structure of Chromosomes
Chromosome These are threadlike structure containing DNA and genes. DNA has a negative charge distributed along its length
Nucleic Acid & Protein Synthesis
Structure & Replication of DNA Nucleotides Basic building block of nucleic acids, such as DNA and RNA.
Cell structure and organisation
Cell structure and Organization All living things are made of cells. A cell is the smallest (they
Reproduction
Asexual Reproduction The process resulting in the production of genetically identical offspring from one parent. Bacteria: Reproduce by
Variation & Selection
Variation Variation: differences between individuals of the same species Phenotypic variation is caused by both genetic and environmental factors
Enzymes
Learning objectives define an enzyme explain the properties of enzymes explain enzyme action investigate factors that affect the
Excretion in Humans
Excretion in Humans Excretion: the removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in
Homeostasis
Definition is the maintenance of a constant internal environment(temperature), water and glucose concentration Negative feedback is a main