ib biology

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 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...

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 ...

How do you calculate the magnification of a drawing/image? - correct answer Magnification=Image size(with ruler) / Actual size(according to scale bar) How do you calculate the actual size of a magnified specimen? - correct answer Actual size=Image size(with ruler) / magnification By which process do potassium ions move through potassium channels in axons? - correct answer Facilitated diffusion -at rest, the Na-K+ pump expels Na+ ions out of cell, while K+ are put within -when the n...

IB Biology Year 1 Review with Complete Solutions ecology the study of relationships between living organisms and between organisms and their environment ecosystem a system made up of organisms as well as the abiotic factors in the area population a group of organisms of the same species who live in the same area at the same time community a group of populations living and interacting with each other in an area species a group of organisms which can interbreed and produce fertile offsprin...

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 offer a full explanation; and what evidence is needed for a theory...

IB Biology Midterm Study guide Exam Questions With 100% Correct Answers 1. Which are examples of homologous structures? A. The wings of bats and butterflies B. The fins of fish and whales C. The hindlimbs of frogs and grasshoppers D. The forelimbs of primates and penguins - answerD. The forelimbs of primates and penguins 2. Which is an example of natural selection? A. A giraffe stretching its neck to reach higher leaves B. A juvenile bird learning to sing C. Development of antibiotic ...

Prokaryote or Eukaryote in paramecium? - correct answer Compartments in the cell indicates that it's a eukaryote Property of water which makes it suitable for living? - correct answer Thermal Watson and Crick discovery about DNA - correct answer DNA is double helix What occurs in meiosis but not in mitosis? - correct answer Homologous chromosomes pair up Variation within a population - correct answer Fertilization and mutation properties of stem cells - correct answer ...