Ib bio Study guides, Class notes & Summaries

What are the three main parts of the cell theory? What are some possible exceptions? Practice Question - correct answer 1. All living things are composed of cells. 2. Cells are the smallest unit of life 3. Cells come from pre-existing cells Exceptions: Viruses: living or not? and amoeba What are the basic functions of life? What organisms carry out these functions? - correct answer Metabolism, response, homeostasis, growth, reproduction and nutrition. Unicellular organisms W...

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 homologo...

Which structures is found in all prokaryotic cells? - correct answer Ribosomes, Plasmid, Pili. (some only have Flagellum & Cell Wall) Features found in most plant and animal cells? - correct answer cytoplasm, mitochondria, ribosomes Size of the diameter for most cells is..? - correct answer 10 m to 100 m functions of a membrane protein? - correct answer Enzymatic activity, Channels, Cell-to-cell recognition, cell-structure, hormone binding sites. Why is the genetic code descr...

IB Biology Review Exam Topic 2: Molecular Biology Actual Exam Questions Answered Correctly LATEST

Water properties: • Cohesion: like molecules attract to each other • Water is a polar molecule that forms a hydrogen bond with other water molecules. • The negatively charged oxygen atom of one water molecule forms a hydrogen bond with a positively • charged hydrogen atom of another water molecule. This attractive force between these molecules is called cohesion which helps plants draw water from the root through the xylem to the leaf • Adhesion: unlike molecules attract to eac...

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 Organelle - ️️any of a numbe...

IB biology past essay questions HL and SL all units and mark scheme 2023 (A+) Outline what is meant by the trophic level of an organism with three examples from one named habitat. (4 max) - Answer-feeding level for an organism in a food chain naming of habitat (1 mark) naming three trophic levels correctly (1 mark) three examples forming a food chain from the named habitat (1 mark) 2. Compare the ways in which autotrophic, heterotrophic and saprotrophic organisms obtain energy. (6 ma...

IB Biology HL Questions And Answers 2023 Update A+ What are the characteristics common to all forms of life? - 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? - AnswerMolecules, cell, tissue, organ, organism, population, community, ecosystem, biosphere What are the 4 most common types of biological molecules? - Answer-Proteins, nucleic acids, carb...

IB Biology HL Exam Questions With Complete Solutions @ 2023...