IB Biology SL Final Study Guide 2022/2023 with 100% correct answer

What is the cell theory? 1. cells are the basic unit of life 2. All living things are made up of cells 3. all cells come from pre--existing cells. What is the difference between the structure of all prokaryotes and all eukaryotes? prokaryotes has a nuclei and eukaryotes has nuclear envelope A cell has cytoplasm, a cell wall, naked DNA and ribosomes. Based on this information, what type of cell could this be? A bacterium Which pair of features is correct for both a human liver cell and an Escherichia coli cell? Human liver cell contains DNA associated with protein and Escherichia coli cell contains naked DNA Which structure are present in both plant and animal cell? mitochondrion and ribosomes What feature do plant cells have but not animal cells? cell walls Which cell organelle is responsible for the production of proteins to be exported from the cell? Rough endoplasmic reticulum Which is the best explanation of the effect of increasing the substrate concentration on the rate of an enzyme controlled reaction? The rate increases up to a maximum threshold rate then stops increasing What would be the effect of increasing the pH of a solution from pH4.0 to pH9.0 on the rate of a reaction paralyzed by an enzyme which has an optimum pH of 7.0? The rate would increase and then decrease Which phrase best describes enzyme substrate specificity? The enzyme has an active site that only one specific substrate can bind to which molecule is a monosaccharide? glucose What is the role of a carbohydrates in animal cells? energy What features are correct for hydrogen bonding? it is involved in the cohesion of water and it results in the thermal properties of water What best describes the tertiary structure of a protein? interactions forming hydrogen bonds between the amino acids What is true about enzymes? They lower the energy of activation for a reaction