Study guides, Class notes & Summaries

IB Biology HL Questions and Answers Already Passed What are the characteristics common to all forms of life? reproduction, carbon, responds to surroundings, Growth and Development, cellular organization, and energy What are the levels of biological organization from simple to most complex? Molecules, cell, tissue, organ, organism, population, community, ecosystem, biosphere What are the 4 most common types of biological molecules? Proteins, nucleic acids, carbohydrates, and lipids...

IB Biology HL Exam Review Latest Version Already Graded A Outline the cell theory. Living organisms are composed of cells. Cells are the smallest unit of life. Cells come from pre-existing cells. Discuss the evidence for the cell theory. The nature of scientific theories could be introduced here: the accumulation of evidence that allows a hypothesis to become a theory; whether a theory should be abandoned when there is evidence that it does not offer a full explanation; and what evid...

IB Biology HL Topic 7 Latest 2024 Graded A DNA structure antiparallel strands, 3'-5' linkages, and H bonding between purines and pyrimidines Nucleosomes consist of DNA wrapped around 3 histone proteins and are held together by another histone protein Nucleosomes help to supercoil chromosomes and help to regulate transcription Unique (single-copy) genes are translated and constitute a surprisingly small proportion of eukaryotic DNA Highly repetitive sequences constitute 5-4...

IB Biology HL Option A.4 Questions and Answers Already Passed What is innate behaviour? Provide an example. inherited from parents and develops independently of environment as it is unaffected by animal's experiences e.g. palmer grasp reflex in babies How can innate behaviour change? What is the rate of change? - can change through evolution via natural selection - rate of change much slower than with learned behaviour Describe how invertebrate experiments can be conducted to observ...

IB Biology HL Exam Review 2024 with 100% correct answers Outline the cell theory. - CORRECT ANSWER - Living organisms are composed of cells. Cells are the smallest unit of life. Cells come from pre-existing cells. Discuss the evidence for the cell theory. - CORRECT ANSWER - The nature of scientific theories could be introduced here: the accumulation of evidence that allows a hypothesis to become a theory; whether a theory should be abandoned when there is evidence that it does not ...

IB Biology HL 2.1.1 Outline Cell Theory - Cell theory states that: all living organisms are composed of cells. Multicellular organisms are composed of many cells, while unicellular are of one cell. Cells are the basic unit of structure in all organisms. Cells are the smallest units of life capable of surviving on their own. Cells come from pre-existing cells and never nonliving material 2.1.2 Discuss the evidence for the Cell Theory - Scientists had experimented and found the cell was...

IB Biology 2 HL Exam Review Outline the cell theory. - Living organisms are composed of cells. Cells are the smallest unit of life. Cells come from pre-existing cells. Discuss the evidence for the cell theory. - The nature of scientific theories could be introduced here: the accumulation of evidence that allows a hypothesis to become a theory; whether a theory should be abandoned when there is evidence that it does not offer a full explanation; and what evidence is needed for a theory ...

What are the characteristics common to all forms of life? - correct answer reproduction, carbon, responds to surroundings, Growth and Development, cellular organization, and energy What are the levels of biological organization from simple to most complex? - correct answer Molecules, cell, tissue, organ, organism, population, community, ecosystem, biosphere What are the 4 most common types of biological molecules? - correct answer Proteins, nucleic acids, carbohydrates, and lipids Organ...

QUESTIONS AND ANSWERS

QUESTIONS AND ANSWERS