Aqa stuvia - Study guides, Class notes & Summaries

Many different substances enter and leave a cell by crossing its cell surface membrane. Describe how substances can cross a cell surface membrane. (5) - ANSWER1 (Simple / facilitated) diffusion from high to low concentration / down concentration gradient; 2 Small / non-polar / lipid-soluble molecules pass via phospholipids / bilayer; OR Large / polar / water-soluble molecules go through proteins; 3 Water moves by osmosis / from high water potential to low water potential / from less to mo...

What is the central nervous system (CNS) - ANSWER-The CNS includes the brain and the spinal cord, the brain is the centre of all conscious awareness and it is the outer layer, the cerebral cortex, which distinguishes us from animals. The spinal cord is an extension o the brain and is responsible for our reflexes and movements. The spinal cords main function is to relay information from the brain to the rest of the body. The brain is made up of four main areas, the brain stem, the diencephalon...

aerobic respiration - ANSWERan exothermic reaction in which glucose is broken down using oxygen to produce carbon dioxide and water and release energy for the cells anaerobic respiration - ANSWERan exothermic reaction in which glucose is broken down in the absence of oxygen to produce lactic acid in animals and ethanol and carbon dioxide in plants and yeast. A small amount of energy is transferred for the cells exothermic reaction - ANSWERa reaction that transfers energy to the environment...

Humanistic approach: Free will and self actualisation - ANSWER-understands behaviour that emphasises importance of subjective exp and capacity for self determination Free will: notion that humans can make choices r not determined by external forces. Active agents Self-actualisation: desire to grow psychologically and fulfil ones full potential, innate Humanistic Approach Maslows hierachy of needies - ANSWER-1) physiological needs 2) safety and security 3) love and belongingness 4) s...

Central Nervous System (CNS) Peripheral Nervous System (PNS) - ANSWER-2 divisions of the nervous system brain and spinal cord - ANSWER-2 divisions of the CNS involved in mental processing and control over the body - ANSWER-brain relays messages from the brain to the body and back - ANSWER-spinal cord Somatic Nervous System (SNS) Autonomic Nervous System (ANS) - ANSWER-2 divisions of the PNS controls voluntary, conscious actions - ANSWER-SNS controls the body's automatic/invo...

Energy Stores - ANSWER1) Elastic potential 2) Gravitational potential 3) Thermal 4) Electrostatic 5) Nuclear 6) Chemical 7) Kinetic 8) Magnetic 9) Light 10) Sound How is energy transferred? - ANSWER1) Mechanically - force doing work 2) Electrically - work done by moving charges 3) Heating/Radiation - light, sound How can work be done? - ANSWERWhen a current flows or by a force moving an object Kinetic energy formula - ANSWERE=1/2mv² Kinetic energy(J) = 0.5 x mass(kg) x s...

Participants for Meltzoff + Moore (Attachment) - ANSWER-Babies Procedure for Meltzoff + Moore (Attachment) - ANSWER-- Adult model displayed one of three facial expressions/hand movements - At first, a dummy was placed in baby's mouth to prevent response - Then the dummy was removed + the display was repeated - Baby's response was filmed Findings for Meltzoff + Moore (Attachment) - ANSWER-There was strong association between baby's + adults behaviour Aim for Schaffer + Emerson (Att...

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Which of the following describes the groundwater store? [1 mark] A W ater flowing across the ground surface. B W ater stored on the ground surface in lakes and ponds. C W ater stored in the ground below the water table. D W ater stored within vegetation growing on the ground.

Energy is transferred between stores - ANSWERThermal, kinetic, gravitational potential, elastic potential, chemical, magnetic, electrostatic, nuclear Energy is transferred... - ANSWERMechanically (by a force doing work), electrically (work done by moving charges), by heating or by radiation (like light or sound) When a system changes, energy is transferred - ANSWERIt can be transferred into or away from the system, between objects in the system or between different types of energy stores. ...