Ib bio Study guides, Class notes & Summaries

MetabolismAnabolism+catabolism. the chemical processes that occur within a living organism in order to maintain life. Enzymatic Reactions inside a living organism CarbonCarbon is an element with the atomic number 6, meaning it has four electrons in its outer shell. These electrons can form covalent bonds with carbon atoms or atoms of other elements. This allows a diversity of stable compounds to exist. LipidsA diverse group of Carbon containing macromolecules made up of carbon, hydroge...

This document summarizes option A of the IB course companion. This chapter includes many different aspects of biology, but bullet points and pictures make it easy to understand and learn for your tests and exams!

IB Biology Paper 2 Section B Questions and Answers Already Passed Draw a labelled diagram of the human adult male reproductive system. [5 marks] a. scrotum - shown around testes; b. testes/testis/testicles - shown inside scrotum; c. epididymis - shown adjacent to testis and connected to sperm duct; d. sperm duct/vas deferens - double line connecting testis/epididymis to urethra; e. seminal vesicle - sac shown branched off sperm duct (not off the urethra); f. prostate gland - shown positi...

IB Biology: Option A (Neurobiology) with Complete Solutions Neural tube - develops by neurulation - elongates as embryo grows - develops in first month of gestation (humans) Neurulation development of a dorsal nerve cord at an early stage in development in chordates Neural pruning removal of dendrites and axon branches from some neurons Medulla oblongata controls autonomic activities e.g. swallowing, digestions, vomiting, breathing, heart rate Cerebellum coordinates unconsc...

This document is the complete summary required to pass the IB Biology Standard Level exams. It includes a detailed and comprehensive (yet concise) summary of Chapters 1-6 of the new textbook by Andrew Allott, as well as case studies you can mention during the exam, drawings and diagrams of relevant biological processes (such as mitosis / meiosis), tables, and class notes from a leading IB school. These notes have been used exclusively in order to achieve a 7 in the course, and have therefore ...

IB Biology - Ecology.

IB Bio A1.1 Water Questions and Answers Graded A+ List reasons why water is a substance on which life depends. A1.1.1 - Water as medium of life. 1. The first cells originated in water. 2. Water is the "universal solvent" allowing it to dissolve and transport molecules around a body. 3. Water is a metabolite in condensation and hydrolysis reactions. 4. Water is a temperature buffer in bodies and ecosystems. 5. Water maintains biological structures (such as phospholipid bilay...

IB Bio HL I Semester 1 Exam Review with Certified Solutions Outline the Cell Theory -All organisms are composed of one or more cells -Cells are the smallest unit of life -All cells come from pre-existing cells Discuss the evidence for Cell Theory -Robert Hooke uses microscope to observe living cells -Louis Pasteur performs chicken broth experiment to prove that cells come from pre-existing cells Outline the therapeutic uses of stem cells -Implanted stem cells to rebuild brain tis...

IB Biology Review with Complete Solutions cell theory -All living things are composed of cells -cells come from preexisting cells -Cells are smallest unit of life Challenges to cell theory: muscle fibres -They are fused cells, so they're long and have multiple nucleus -challenges cells are autonomous units Challenges to cell theory: Giant algae -certain species may grow large -challenges idea cells are microscopic and larger organisms are composed of many Challenges ...

IB Biology Latest Update with Verified Solutions genotype the alleles of an organism phenotype the characteristic of an organism dominant allele an allele that has the same effect on the phenotype when present in both homozygous and heterozygous states co-dominant alleles pair of alleles that both affect the phenotype when present in a heterozygote recessive alleles an allele that only has an effect on the phenotype when in homologous state locus the particular position on...

IB Biology semester 1 Latest Version Graded A+ Cells Smallest functional unit of an organism What are the principles of cell theory? 1. All living things are made of cells 2. Cells are smallest unit of life 3. Cells come from pre-existing cells What are the properties of life? Metabolism Reproduction Growth Response Excretion Homeostasis Nutrition Prokaryotic cells Single cell which has neither a distinct nucleus or organelles can be an organism (e.g. bacteria) Flage...