Ib biology review Study guides, Class notes & Summaries

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.

Chapter 3: The Nature and Nurture of Sex and Gender Test Bank Multiple Choice 1. As early as 1993, Biologist Ann Fausto-Sterling argued what about biological sex? A. that at least five or more biological sexes should be recognized B. that the cultural tendency to view sex as binary is largely correct C. that there are actually three biological sexes D. that the concept of biological sex is meaningless Ans: A Learning Objective: 3-3: Analyze the biological and sociocultural factors...