CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 – 2026
transition state - ANSWERS-a high-energy intermediate state of the reactants
during a chemical reaction that must be achieved for the reaction to proceed
activation energy - ANSWERS-Energy needed to get a reaction started
active site - ANSWERS-a region on an enzyme that binds to a protein or other
substance during a reaction.
kinase - ANSWERS-An enzyme that transfers phosphate ions from one
molecule to another
phosphorylation - ANSWERS-The metabolic process of introducing a
phosphate group into an organic molecule.
coupled reaction - ANSWERS-a chemical reaction in which an exergonic
reaction powers an endergonic reaction
, allele - ANSWERS-one of a number of different forms of a gene on the same
place on the chromosome
genome - ANSWERS-All the genetic information in an organism; all of an
organism's chromosomes.
metabolic pathway - ANSWERS-Begins with a specific molecule, which is then
altered in a series of defined steps, resulting in a certain product.
nucleotide - ANSWERS-A building block of DNA, consisting of a five-carbon
sugar covalently bonded to a nitrogenous base and a phosphate group.
5' vs 3' - ANSWERS-- 5' will have an OH or phosphate group bound to C-5' of
the sugar
- 3' will have an OH bound to C-3' of the sugar
ribose vs. deoxyribose - ANSWERS--ribose: has an -OH group at C-2
-deoxyribose: has an -H group at C-2
phosphate group - ANSWERS-A functional group consisting of a phosphorus
atom covalently bonded to four oxygen atoms
guanine, cytosine, thymine, adenine, uracil - ANSWERS-GCTAU, chemical
bases of nucleotides
GC bonds are stronger than AU bonds