Ib biology review Study guides, Class notes & Summaries

This document provides detailed information about membranes with ib biology syllabus includes. There are notes from the textbook, powerpoints and past papers. I recommend looking over this document for review and memorizing the facts for a test.

Enzyme - AnsGlobular proteins that act as catalysts of chemical reactions Active Site - AnsRegion on the surface of an enzyme to which substrates bind and which catalyzes a chemical reaction involving substrates Enzyme-substrate specificity - AnsThe active sites of enzymes are specific to their substrates because it has a very specific shape, which means enzymes can catalyze only certain reactions as only a small number of substrates fit in the active site Effect of temperature on enzym...

What causes movement of water through the xylem? - ANSWERSB. evaporation of water from leaves When a farmer sprays a chemical on to the leaves of crop plants, how does the chemical travel to the roots of the plants? - ANSWERSA. in the phloem, by active transportation What is the apoplastic route for water from the soil to the endodermis of roots? - ANSWERScell wall of epidermis - cell walls of cortex- endoderm Which of the following help(s) in supporting a terrestrial woody plant? - ANS...

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...

A hydrophobic amino acid R group would be found where in a protein? - ANSWEROn the inside of the folded chain, away from water What happens when a protein denatures? - ANSWERIt hydrolyzes bonds, ionic bonds, hydrophobic interactions, disulfide bridges, and peptide bonds are disrupted What do enzymes do? - ANSWERSupply energy to start a chemical reaction In an experiment, changing the pH from 7 to 6 resulted in an increase in product formation. From this we could conclude that - ANSWERTh...

Which sequence of DNA would be suitable in DNA profiling? - ANSWER-the one ending in TGA Which gas produces most of the bubbles in bread dough? - ANSWERcarbon dioxide Which molecule would first contain C^14 if the alga Chlorella was grown in the presence of light and radioactive CO2? - ANSWERglycerate 3 phosphate What is a characteristic of homologous chromosomes? - ANSWERthey are of the same length in karyograms In which situation are alleles exchanged? - ANSWERwhen chiasmata are fo...

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 ...

Outline the cell theory. - ANSWERLiving 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. - ANSWERThe 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 to be adopted or reje...

What is metabolism? - ANSWERthe sum total of all chemical reactions that occur in an organism What is a metabolic pathway? - ANSWERa sequence of chemical reactions undergone by a compound or class of compounds in a living organism Why is metabolism important to organisms? - ANSWERit releases energy that our bodies need to function What happens to hydrogen, electrons, and oxygen when a chemical is oxidized? - ANSWERelectrons are lost, hydrogen is lost, and oxygen is gained What happens ...

COMPLETE IB Biology Review questions with 100% correct answers.