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Human Biology Test1
Includes: Active Transport, Microscopes, etc.
| Question | Answer |
|---|---|
| What is the Aerobic equation? | (Glucose) C6H12O2 + O2 -> (Energy) ATP + CO2 + H2O |
| What is the Anaerobic equation? | Glucose -> Energy + Lactic Acid |
| Anabolism equation is... | CO2 + H2O -> C6H12O6 +O2 |
| Catabolism equation is... | C6H12O6 +O2 -> ATP + CO2 + H2O |
| What type of reaction takes place in Photosynthesis? (1 term) | Anabolism |
| What type of reaction takes place in Cellular Respiration? (1 term) | Catabolism |
| What is Metabolism? | The chemical reactions occurring in the body of an organism. |
| Anabolism is the joining... | of small molecules to make larger molecules. |
| Anabolism receives energy from | an anabolic process or synthesis (not confined to living organisms). |
| Catabolism is the breaking... | down of large molecules into smaller molecules. |
| Catabolism receives energy from | a catabolic process |
| Anabolic energy example | Build up of proteins from amino acids. |
| Catabolic energy example | Glucose is broken down to carbon dioxide and water. |
| Define Transport work... | Moving substances across cell membranes. |
| Define Mechanical work... | Supplying the energy needed for muscle contraction. It supplies energy for heart circulation and movement. |
| What are Enzymes? | Are proteins that allow chemical reactions to take place at normal body temperature. |
| Cellular respiration is one of the most important metabolic processes in any cell. Explain this process... | Organic molecules, taken in as food, are broken down in the cells, uptake of materials from the surroundings etc. |
| Respiration word equation is... | Glucose + O2 --> CO2 + H2O + Energy |
| Remaining energy from cellular respiration is used to form a compound called... (full name and abbreviated) | Adenosine Triphosphate (ATP) |
| ATP is formed when... | An inorganic phosphate group is joined to a molecule of Adenosine Diphosphate (ADP). |
| ATP stores energy energy is released when ATP breaks down to... | ADP |
| The first phase in the breakdown of Glucose is called... | Glycolysis |
| Three athletic events classified as aerobic events: | Jogging, Swimming and Aerobic Dancing. |
| Oxygen debt is when someone has consumed oxygen at a rate... | faster than it can be replaced. |
| Two limiting factors for humans when producing energy is... | Availability of Oxygen, availability of appropriate fuel. |
| A nutrient is any substance in our food that is used for... | Growth, repair or maintaining the body or any substance required for metabolism. |
| Pyurvic Acid occurs naturally in the body and... | is an end product of the metabolism of sugar or starch. |
| The five levels of organisation in the body is... | Cell -> Tissue -> Organ -> System -> Body |
| What are three differences between animal and plant cells? | Plant cells have chloroplasts unlike animal cell. Plant cells have a cell wall unlike animal cells. Animal cells have a lot of lysosomes unlike plant cells. |
| Mitochondria | Powerhouse of the cell. Involved in ATP production. Energy-producing chemical reactions take place on cristae. |
| Smooth Endoplasmic Reticulum | Tubular network. Lacks ribosomes.Stores, separates and serves as cells transport system. |
| Rough Endoplasmic Reticulum | Ribosomes embedded in surface. Stores, separates and serves as cells transport system. |
| Nucleus | Spherical organelles that is the cells control centre. |
| Golgi Body | Protein packaging plant. A membrane structure found near the nucleus. Composed of numerous layers (sac). |
| Lysosome | Digestive 'plant' for proteins, lipids and carbs. Transports undigested material to cell membrane. |
| Cell membrane | Controls the movement of nutrients and waste in and out of the cell (semi-permiable). |
| Cell wall | Surrounds plasma membrane. Commonly found in Plant Cells. |
| Chloroplast | A placid usually found in the plant cell. Green chlorophyll (photosynthesis). |
| Vacuole | Storage, digestion, and waste removal. Contains water solution. |
| What is DIffusion? | A passive process resulting from the random movement of ions and molecules and is the spreading out of particles so that they are evenly distributed over the space available. |
| Energy required for Diffusion | Kinetic energy from the environment but does not require cellular energy. Therefore it is a form of passive transport. |
| Example of Diffusion | The exchange of carbon dioxide and oxygen between the alveoli in the lungs and the blood. |
| What is Osmosis? | (Type of diffusion) The diffusion of water across a permeable membrane from a region of higher water concentration to a region of lower water concentration. |
| Energy required for Osmosis | Does not require any cellular energy but just kinetic energy related on either side of the membrane. |
| Example of Osmosis | Animal cells have no cell wall to stop them swelling. So if they are placed in pure water, they take in water by Osmosis until they burst. |
| What is Phagocytosis? | The process by which a cell engulfs particles such as bacteria, and other microorganisms, in the bloodstream and tissues. The process by which a cell surrounds, and takes in solid particles. |
| Phagocytosis might be attracted to... | a particle like a bacteria or virus by chemical attractant. |
| What is Pinocytosis? | The ingestion of liquid into a cell by the budding of small vesicles from the cell membrane. |
| What is Active Transport? | Is the pumping of molecules or ions through a membrane against their concentration gradient. |
| Energy required for Active Transport | Requires energy from respiration (ATP). |
| Example of Active Transport | The thyroid gland cells bring in iodine for use in producing hormones. |
| What is Exocytosis? | Is a process in which an intracellular vesicle (membrane bounded sphere) moves to the plasma membrane and subsequent fusion of the vesicular membranes and plasma ensues. |
| Example of Exocytosis | Secretion of proteins like enzymes, hormones and antibodies from cells. |
| Chromosomes | Contains genetic information and composed of DNA |
| Nuclear membrane | The double-layered membrane enclosing the nucleus of a cell. Also called nuclear envelope. |
| Centrioles | Involved in cellular division |
| Ribosomes | 'Protein factories' |
| Nucleolus | Contains RNA for protein manufacture. Spherical shape. |
| What is a hypothesis? | A brief statement that can be proved or disaproved by an experiment. |
| Why do we repeat experiments? | To have confidence in the results. |
| Why is a Placebo used in an experiment? | To control the problem of an uncontrolled variable. |
| Define: Independent variable | Variable you change in an experiment. |
| Define: Dependent variable | Is what you measure in an experiment. |
| Define: Controlled variable | These variables must be kept constant. |
| Define: A Control | Functions the exact same way, every time. |
| Define: Uncontrolled | Is a characteristic that you allow to stay random during the sampling. |