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Paper 2 – free response questions on the SSC (32% at SL, 36% at HL) Paper 3 – free response questions on the options (24% at SL, 20% at HL) At the Standard Level, the examinations are respectively 45 minutes, 1 hour and 15 minutes, and 1 hour long.
HL students will need to produce at least four written tasks (at least one based on parts 1 or 2, at least one based on parts 3 or 4, and at least one of task 2). Two of these are submitted for assessment. The SL written task and HL written task 1 are creative pieces of writing used to explore an aspect of the material in the course.
To satisfy IB Music HL, the candidate must perform solo for a total of 20 minutes and write three contrasting compositions (of which one may be an arrangement), each between 3 and 6 minutes. All candidates sit a written exam at the end of the course, which lasts 3 hours for HL candidates and 2 hours 15 minutes for SL candidates.
The different papers may have different forms of questions, or they may focus on different areas of the subject syllabus. For example, in Chemistry SL, paper 1 has multiple choice questions, paper 2 has extended response questions. Paper 3 focuses on the "Option(s)" selected by the teacher and data analysis questions.
In July 2020, the IB released its results for the Diploma Programme and Career-related Programme candidates enrolled in the May 2020 session. Over 17,000 signatories signed an online petition calling for a clarification of the grading methodology, and free remarking and retesting. [70] Several educators have criticized IB's approach to the 2020 ...
Morphology of a male skeleton shrimp, Caprella mutica Morphology in biology is the study of the form and structure of organisms and their specific structural features. [1]This includes aspects of the outward appearance (shape, structure, color, pattern, size), i.e. external morphology (or eidonomy), as well as the form and structure of internal parts like bones and organs, i.e. internal ...
D* then emits a photon (hν), to give the ground state of D: [1] I D* → D + hν. In theory, one photon of light should be given off for each molecule of reactant. In practice, the yield ("quantum efficiency") is often low owing to side reactions. For example, A could be luminol and B could be hydrogen peroxide. D would be 3-APA (3 ...
Tests of necessity, among which are methods of lesioning or gene knockout, and tests of sufficiency, among which are methods of isolation or discrete stimulation of factors, have become important in current-day experimental designs, and application of these tests have led to a number of notable discoveries and findings in the biological sciences.