2352309
| Question | Answer |
| What is the Cell Theory? | - All organisms are composed of cells - All cells come from pre-existing cells - The cell is the smallest living organisational unit |
| What is the relation between the surface area an volume of a cell | The bigger the surface area, the bigger the volume of the cell |
| What is the difference between a unicellular organism and a multicellular organism | A unicellular organism is made up of only one cell. A multicellular organism is made of many cells |
| What is diffusion? | Diffusion is the passive movement of a substance from an area of high concentration to an area of low concentration |
| What is osmosis? | Osmosis is the movement of a substance from a high area of concentration to an area of low concentration through a partially permeable membrane |
| What is active transport? | The movement of substances across a membrane that requires energy expenditure |
| What do cells need? | Proteins Carbohydrates Lipids Water Oxygen Ions Minerals |
| What do cells remove? | Messages Proteins Urea (Nitrogenous Wastes) Water |
| What is asexual reproduction? | a single organism reproducing without another |
| What is sexual reproduction? | Two parents each provide a sex cell |
| What are the 7 levels of classification in the correct order | Kingdom Phylum Class Order Family Genus Species |
| What are the three types of adaptation? | Structural Physiological Behavioral |
| What are the five kingdoms? | Animalia Plante Fungi Monera Protista |
| What are the six features of living things? | Reproduction Adaptation Respond to environment Respiration Made of cells Chemically complex and highly organised |
| What does Heterotrophic mean? | That an organism depends on other organisms for food |
| What does Autotrophic mean? | Organisms that can produce their own food. E.g. plants using photosynthesis |
| What are Eukaryotic cells? | Cells with a nucleus |
| What are prokaryotic cells? | Cells with no nucleus |
| What is a nucleotide? | The basic unit of a nucelic acid |
| What are the biological compounds? | Carbohydrates Lipids Proteins |
| What biological compound is a major component of cell membranes? | Lipids |
| What biological compound is used as enzymes, hormones and structurally to build up substances | Proteins |
| What biological compound is converted to sugar in the human body to supply energy? | Carbohydrates |
| What is the function of the Mitochondria? | The Mitochondria are involved in the energy transformations that take place in the cell |
| What is the function of the Smooth Endoplasmic Reticulum? | The Smooth ER is a passage for protiens |
| What is the function of the Rough Endoplasmic Reticulum? | Movement of synthesised proteins |
| What is the function of the Nucleus? | The Nucleus contains genetic material and controls the cellular activities |
| What is the function of the Golgi Apparatus? | The Golgi Apparatus is where final synthesis and packaging of proteins in membrane-bound vesicles take place before secretion |
| What is the function of the Ribosomes | Tiny organelles that are sites of production of protein |
| What is the function of the Cell Wall? | Provides support, prevents expansion of cells and allows water and dissolved objects to pass |
| What is the function if the cell membrane? | A delicate structure which contains the cytoplasm and controls the movement of substances in and out of the cell |
| What is the function of the chloroplast? | Found in plant cells where photosynthesis takes place |
| What is the function of the vacuole? | Contains food, enzymes or fluid |