Essay plan for Etiology questions (paper 2 SL/HL)

An example of the document: Topic 1: Cell Biology Describe the characteristics of stem cells that make them potentially useful in medicine. [5] (stem cells) have/retain the capacity to divide; can be used to produce cell cultures/large number of identical cells; can be used to repair/replace damaged/lost cells/tissue; (stem cells) are undifferentiated / have not yet differentiated/specialized; can differentiate/specialize in different ways / are pluripotent/totipotent; can be used to form a variety of different tissues / form organs; used in medical research; used in treatment of (named) disease; Draw a labelled diagram to show the structure of membranes. [5] phospholipid bilayer – with head and tails; hydrophilic/phosphate/polar heads and hydrophobic/hydrocarbon/fatty acid/ non-polar tails labelled; integral protein – embedded in hydrophobic region of the phospholipid bilayer; channel protein – integral protein showing clear channel/pore; peripheral protein – on the surface (not embedded in hydrophobic region) can be attached to integral protein; glycoprotein – with carbohydrate attached on outside; cholesterol – shown embedded in bilayer; Explain the importance of surface area to volume ratio as a factor limiting cell size. [7] as volume of a cell increases, the ratio of its surface area to volume decreases; food/oxygen enters through the surface of cells; wastes leave through the surface of cells; the rate of substance crossing the membrane depends on surface area; more metabolic activity in a larger cell means more food and oxygen required; large volume means longer diffusion time; (large volume) means more wastes produced; excess heat generated will not be lost efficiently (with low surface area to volume ratio); eventually surface area can no longer serve the requirements of the cell; this critical ratio stimulates mitosis; (thus) the size of the cell is reduced and kept within size limits; Draw a labelled diagram of a prokaryotic cell. [5] a. cell wall – uniformly thick and drawn outside the plasma membrane; b. plasma membrane – a continuous single line; c. cytoplasm/cytosol; d. nucleoid/(naked) DNA – shown as a tangle of thread or irregular shape without a nuclear membrane; e. (70S) ribosomes – drawn as a small circle or dark dot; f. pili – hair like structures / flagellum – shown to be longer than any pili; g. plasmid – circular ring of DNA; h. capsule – drawn outside the cell wall; Award [1] for each structure clearly drawn and labelled which conforms to the italicized guidelines given above.

Covering all HL content Practice questions Glossaries

Covering all HL content Practice questions Glossaries IB Biology: Interaction and Interdependence Revision Guide HL

Covering all HL content Practice questions Glossaries For ALL ecosystems content

Covering all HL content Practice questions Glossaries For ALL molecules content

Covering all HL content Practice questions Glossaries For ALL cells content

Covering allHL content Practice questions Glossaries For ALL organisms content

IB Psychology Paper Two Revision Guide SL Includes: All needed studies All possible questions with studies Glossaries Definitions FOR ABNORMAL + HUMAN RELATIONSHIPS

Covering all HL content Practice questions Glossaries

IB Biology: Unity and Diversity Revision Guide (HL) Covering all HL content Practice questions Glossaries

Here is my IB Psychology Internal Assessment which is ‘An experiment into the effect of leading questions on memory’ it replicated Loftus and Palmers study.

Summaries of ALL key studies needed for Paper 1 and 2 at Higher Level.

Plans for: To what extent does genetic inheritance play a role in one behaviour? (22 marks) Evaluate research on neuroplasticity. (22 marks) Discuss the role of hormones and/or pheromones on behaviour. (22 marks) including topic sentences, study summaries, evaluations etc

I was awarded an A for this reflective project on the ethics relating to elective caesarean sections.

Plans for: Explain the use of one research method in one study used in the study of the individual and the group. Explain one ethical consideration relevant to one study of cultural influences on attitudes, identity, or behaviour. Explain Social Identity Theory, making use of one study. Explain one study of Social Identity Theory. Explain Social Cognitive Theory, making use of one study. Explain one theory of stereotypes, making use of one study. Explain one study of stereotypes. Explain one study that shows one effect of stereotypes on behaviour. Explain one cultural dimension. Explain one study of one cultural dimension. Explain one study of one effect of culture on behaviour or cognition. Explain one study of enculturation. Explain one study of acculturation.

This is a filled in summary grid of all the content from the CLOA and the SCLOA, this was used to get a 7 in the IB.

Plans for: Explain the use of one research method in one study using the biological approach to understanding human behaviour. Explain the use of one research method in one study of hormones or pheromones and behaviour. Explain the use of one research method in one study of the brain and behaviour. Explain the use of one research method in one study of genetics and behaviour. Explain one ethical consideration relevant to studying the brain and behaviour Explain one ethical consideration relevant to one study using a biological approach to understanding human behaviour. Explain one ethical consideration relevant to one study of hormones or pheromones and behaviour. Explain one ethical consideration relevant to one study of genetics and behaviour. Explain one study of localization of function. Explain one study of neuroplasticity. Explain neuroplasticity, making use of one study. Explain one effect of neurotransmission in human behaviour, making use of one study. Explain the formation of neural networks using one study. Explain one technique used to study the brain in relation to behaviour. Explain the role of one agonist, making use of one study. Explain the role of one antagonist, making use of one study. Explain neural pruning, making use of one study. Explain how excitatory or inhibitory synapses play a role in one behaviour, making use of one study. Explain the role of one hormone in human behaviour, making use of one study. Explain one study of the role of pheromones in human behaviour. Explain the use of twin studies and/or kinship studies using one study. Explain one evolutionary explanation of one behaviour. Plans include: Intro/definitions. Key study

Plans for: Explain the use of one research method in one study of cognitive processes. Explain one ethical consideration relevant to one study of the reliability of cognitive processes. Explain the use of one research method in one study of emotion and cognition. Explain one study related to schema theory. Explain one model of memory. Explain the working memory model with reference to one study. Explain the multi-store model with reference to one study. Explain one study that supports one model of memory. Explain one study of thinking and decision making. Explain one model of thinking and decision making. Explain one study of rational and/or intuitive thinking. Explain one study of reconstructive memory. Explain one study of one cognitive bias. Explain one cognitive bias, making use of one study. Explain one theory of how emotion may affect one cognitive process, using one study.

Here is a document used to revision for the IB HL exams, it has a glossary (from ThinkIB) as well as key studies, definitions and evaluations for every point on the Paper3 Specification