Ib biochemistry paper 3

Heavy Metals Are Known to Be Toxic Even in The Lowest of The Concentrations

a.) Suggest a reason why heavy metals are toxic Answer Heavy metals are toxic because the molecules that make up the metal damage or negatively interact with the cells in your body that are essential to keep your organs functioning. b.) Outline how heavy metals can be removed from solutions other than precipitation Answer Chelation using an EDTA, i.

Is IB SL vs HL paper 3 worth it?

Is there a comprehensive question bank for IB Chemistry HL paper 3?

Lithium Metal Is Obtained by Electrolysis of Molten Lithium Chloride.

a.) Calculate the time it takes to deposit 0.842 g of lithium using a current of 3.31 A.
Formula is Q (Charge) = I (Current) x T (Time) Answer Number of moles = m / mr = 0.842/6.94 = 0.121 moles Time = Charge / Current = (96500 x 0.121) / 3.31 = 3527.64 seconds → 3530 s b.) When lithium is doped into graphene, it is seen to have some superconductiv.

Nanotechnology Has Allowed The Manipulation of Materials on The Atomic Level

a.) Describe the structure and bonding of a carbon nanotube Answer The chemical bonding of CNTs is composed entirely of sp2 bonds, similar to those of graphite and are arranged in a hexagonal pattern.
CNTs naturally align themselves into ropes held together by van der Waals forces. b.) Suggest one place where carbon nanotubes are used Answer They a.

Should I answer questions on Option B If I take Paper 3?

Superconductors Has A Variety of Applications

a.) Define superconductors Answer Superconductors are solids that at low temperatures exhibit zero resistance to the flow of electrical current b.) Differentiate between Type 1 and Type 2 superconductors Answer Type-I superconductors are generally pure metals.
Type-II superconductors are generally alloys and complex oxides of ceramics.
Type I super.

This Question Is About Alcohol Dehydrogenase (ADH) Catalysis

a.) Explain the role of Alcohol Dehydrogenase (ADH) in the metabolism of ethanol, including the oxidation and reduction reactions involved.
Answer Alcohol Dehydrogenase (ADH) is an enzyme that catalyzes the reversible oxidation of ethanol to acetaldehyde, using nicotinamide adenine dinucleotide (NAD+) as a cofactor.
The overall reaction can be repr.

This Question Is About Carbon Capture and Energy

a.) Describe the chemical reactions involved in the absorption and release of carbon dioxide by amine solvents.
Answer: When carbon dioxide reacts with amine solvents, it forms a weak acid that can be easily regenerated by heating the solution.
The overall reaction can be written as follows: CO2 + 2NH3 + H2O → (NH4)2CO3. b.) Give an example of a re.

This Question Is About Chiral Molecules

a.) Define the term “chiral molecule.” What is the significance of chirality in medicinal chemistry.
Answer A chiral molecule is a molecule that has a non-superimposable mirror image, known as an enantiomer.
Chirality is significant in medicinal chemistry because enantiomers can have different pharmacological properties, including differences in ef.

This Question Is About Polymers

a.) Define thermoplastic polymers and thermosetting polymers Answer Thermoplastic polymers are a form of plastic polymers that are moldable at a certain high temperature and solidify when cooled.
Thermosetting polymers are polymers consisting of cross-linked structure or heavily branched molecules.
It is a permanent setting polymer as it hardens an.

What are the sections of paper 3?