GAMSAT GAMSAT Biological Sciences and Chemistry 2 — Questions and Answers
Question 1: Which law states that the pressure of a gas is inversely proportional to its volume at constant temperature, relevant to GAMSAT chemistry?
- Charles's Law
- Avogadro's Law
- Boyle's Law (Correct answer)
- Gay-Lussac's Law
Correct answer: Boyle's Law
Boyle's Law states that at constant temperature, pressure and volume of a gas are inversely proportional (P₁V₁ = P₂V₂).
Question 2: In GAMSAT biology, which phase of mitosis involves chromosomes aligning at the cell's equatorial plate?
- Prophase
- Metaphase (Correct answer)
- Anaphase
- Telophase
Correct answer: Metaphase
During metaphase, chromosomes align along the metaphase plate (cell's equator), maximizing visibility under a microscope.
Question 3: A GAMSAT question asks about enzymes: which term describes the specific molecule an enzyme acts upon?
- Product
- Substrate (Correct answer)
- Cofactor
- Inhibitor
Correct answer: Substrate
The substrate is the specific molecule that binds to an enzyme's active site and undergoes a chemical reaction.
Question 4: Which type of reaction involves the gain of electrons, a concept commonly tested in GAMSAT redox chemistry?
- Oxidation
- Reduction (Correct answer)
- Hydrolysis
- Condensation
Correct answer: Reduction
Reduction is the gain of electrons, remembered by the mnemonic OIL RIG (Oxidation Is Loss, Reduction Is Gain).
Question 5: In the context of GAMSAT genetics, which term describes alternate forms of a gene found at the same locus on homologous chromosomes?
- Genotype
- Phenotype
- Alleles (Correct answer)
- Chromosomes
Correct answer: Alleles
Alleles are different versions of the same gene occupying the same position (locus) on homologous chromosomes.
Question 6: Which type of chemical isomers have the same molecular formula and connectivity but differ in spatial arrangement, a GAMSAT Section III topic?
- Structural isomers
- Stereoisomers (Correct answer)
- Constitutional isomers
- Conformational isomers
Correct answer: Stereoisomers
Stereoisomers have the same molecular formula and connectivity but differ in the spatial arrangement of atoms.
GAMSAT GAMSAT Biological Sciences and Chemistry 2
Which law states that the pressure of a gas is inversely proportional to its volume at constant temperature, relevant to GAMSAT chemistry?