Aqa stuvia - Study guides, Class notes & Summaries

Benedict's test - ANSWERWhich food test is heated in a water bath? Sucrose - ANSWERWhich disaccharide is not a reducing sugar? Test for non-reducing sugars - ANSWERAdd acid. Neutralise. Add Benedicts. Heat. Hydrolysis - ANSWERReaction performed by dilute HCl in the non reducing sugar test. Glucose + fructose - ANSWERDuring the non-reducing sugar test what is sucrose hydrolysed into? Alpha - ANSWERWhich type of glucose makes up starch? amylose and amylopectin - ANSWERNames of t...

What is obedience? - ANSWER A form of social influence in which an individual follows a direct order from a figure of authority. What was Milgram's (1964) study? - ANSWER Milgram (1964) sought an answer to why such a high proportion of the German population obeyed Hitler's commands to murder over 6 million Jews in the Holocaust and other social groups during WW2. Procedure: 40 US men were given the role of TEACHER through a fixed draw - ordered to administer (fake) electric shocks to LEA...

Statistical infrequency - ANSWER Number of times it is observed Different/rare = abnormal E.g. IDD - average IQ 85-115, only 2% below 70 Statistical infrequency - real life applications - ANSWER All MI assessments include comparison to statistical norms IDD demonstrates how it can be used Useful in clinical assessment Statistical infrequency - unusual characteristics can be positive - ANSWER Statistically abnormal but may not need treatment E.g. IQ of 130 not undesirable Should never...

________________________________________ Explain why plasma membranes are said to have a fluid mosaic structure. - ANSWER1. Fluid because the phospholipids are constantly moving. 2. Mosaic because the proteins are scattered throughout the membrane-like tiles in a mosaic. What effect does cholesterol have on the cell membrane? - ANSWER1.Cholesterol molecules fit between the phospholipids and bind to the hydrophobic tails of the phospholipids. 2.Causes them to pack together more closely, restr...

large molecules often contain carbon. why? - ANSWERthey can readily form bonds with other carbon atoms. this forms a 'backbone'. other atoms can then attach. describe benedicts test for reducing sugars - ANSWERadd equal volumes of the sugar sample and benedicts reagent. heat the mixture in a water bath for 5 minutes. brick red precipitate will form. what is a reducing sugar? - ANSWERa sugar that can reduce (give electrons to) another chemical. describe the benedicts test for non red...

central executive - ANSWER-- acts as a filter to determine what information is received - limited capacity - baddeley found participants couldn't type letters and numbers on a keyboard whilst speaking random numbers - limited research phonological loop - ANSWER-- stores verbal information - divided into: - acoustic store: holds words heard - articulatory process: holds words heard and repeats them visuo-spatial sketchpad - ANSWER-- stores visual and spatial information - divided in...

Describe the relationship between the size of an organism and its SA:V ratio - ANSWERSmaller organisms have high SA:V ratios Larger organisms have low SA:V ratios What adaptations do some organisms have for exchange (in terms of SA:V ratio)? - ANSWERThe flattened shape so that no cell is ever far from the surface. The specialised exchange surfaces with large areas to increase the SA:V ratio ---> lungs in animals, gills in fish etc. What is the relationship between SA:V ratio and metabo...

AQA A2 Psychology Paper 2: Approaches Correct 100%(GRADED A+) AQA A2 Psychology Paper 2: Approaches Correct 100%(GRADED A+) AQA A2 Psychology Paper 2: Approaches Correct 100%(GRADED A+) AQA A2 Psychology Paper 2: Approaches Correct 100%(GRADED A+) AQA A2 Psychology Paper 2: Approaches Correct 100%(GRADED A+) AQA A2 Psychology Paper 2: Approaches Correct 100%(GRADED A+) AQA A2 Psychology Paper 2: Approaches Correct 100%(GRADED A+) AQA A2 Psychology Paper 2: Approaches Correct...

What kind of receptors are changes in blood pH and pressure detected by? - ANSWERchemoreceptors and pressure receptors in the aorta or carotid artery Two types of photoreceptors in the eye? - ANSWERrods and cones What colour do rods detect and why? - ANSWERBlack and white ONLY - because they can't distinguish between wavelengths of light What kind of light intensity do rods detect and why? - ANSWER- Rods detect low light intensity - because many rods connect to one sensory neurone (R...

el abuelo - ANSWERgrandad adolescente - ANSWERadolescent el adolescente - ANSWERteenager alegre - ANSWERhappy, cheerful amable - ANSWERkind amistoso - ANSWERfriendly el amor - ANSWERlove anciano - ANSWERold, ancient animado - ANSWERlively antipático - ANSWERunpleasant el apellido - ANSWERsurname el apecto - ANSWERappearance, looks la barba - ANSWERbeard el bebé - ANSWERbaby besar - ANSWERto kiss el beso - ANSWERkiss el bigote - ANSWERmoustache ...