BACE EXAMS SCRIPT 2025/2026 QUESTIONS WITH
ANSWERS TAGGED A+
✔✔Long, circular DNA with several thousand genes - ✔✔prokaryotic DNA
✔✔Small rings of DNA with only a few genes and floating in the cytoplasm - ✔✔Plasmid
DNA
✔✔In DNA double helix, the two DNA chains are held together by: - ✔✔Hydrogen
bonds between the pair of bases
✔✔How do the DNA molecules in various species differ from one another? - ✔✔The
number of genes and non-coding regions.
✔✔Regarding the out of conformance water bath, select the most appropriate course of
action for the technician. - ✔✔Report the problem to QA or individual in charge of repair,
and place an "Out of Service" label on the water bath.
✔✔Why are enzyme solutions always prepared using a buffered solvent at a specific
pH? - ✔✔A buffered solvent is resistant to fluctuations in pH, because it is made with a
combination of a weak acid and its conjugate base. Enzymes lose function outside of a
narrow pH range.
✔✔Why does increasing the temperature of the reactants increase the rate of a
chemical reaction? - ✔✔Heat energy causes the particles of the reactants to move
faster, and therefore react with each other more frequently
✔✔Naturally occurring enzymes involved with DNA replication, and which are also used
as tools in biotechnology, include: - ✔✔DNA Polymerase and DNA Ligase
✔✔Primary (1⁰) structure - ✔✔Amino acids linked together by peptide bonds
✔✔Secondary (2⁰) structure - ✔✔Three dimensional polypetide with alpha helices and
beta sheets due to hydrogen bonding
✔✔Tertiary (3⁰) structure - ✔✔Final three dimensional 3D shape
✔✔Quaternary (4⁰) structure - ✔✔Multipolypeptides forming a larger complex protein
✔✔Select the letter that represents the correct order of assembly in the cell: - ✔✔amino
acid, polypeptide, protein
, ✔✔Why does the rate of a chemical reaction increase with increasing temperature? -
✔✔Increased temperature increases the frequency of collisions between molecules
✔✔If a structural gene's code is "TAC ATG CCC TTA ATC," what will the mRNA
transcript be? - ✔✔AUG UAC GGG AAU UAG
✔✔During the process of translation: - ✔✔mRNA is translated into proteins.
✔✔Where does translation take place in prokaryotes? - ✔✔At the ribosomes
✔✔Determining the presence of a specific protein - ✔✔ELISA
✔✔Determining the size and purity of a specific protein - ✔✔SDS PAGE
✔✔Determining the time period protein remains active - ✔✔Stability
✔✔Determining the amount of a protein present - ✔✔Spectrophotometer
✔✔Determining the protein's activity - ✔✔Enzyme activity
✔✔Identification of a DNA sequence unique to a specific virus - ✔✔Genetic
✔✔Genetically altered bacteria that can breakdown and consume oil - ✔✔Enviromental
✔✔Genetically engineered crops that tolerate environmental stresses, such as extreme
temperature - ✔✔Agricultural
✔✔Genetically engineered cells that make treatments for disease -
✔✔Biopharmeceutical
✔✔Which of the following are advantages to treating diabetics with genetically
engineered human insulin, rather than pig or cow insulin? - ✔✔There is less chance of
an immune response to the human insulin.
Ethical issues are avoided concerning the use of animals.
It is a more efficient process to purify insulin from yeast or bacteria cultures than it is
from animal organs
✔✔"Bioethics" is best described as: - ✔✔The study of decision making as it applies to
moral decisions that must be made due to advances in biology and technology.
✔✔Which of the following are permitted in the laboratory? - ✔✔Eye glasses
ANSWERS TAGGED A+
✔✔Long, circular DNA with several thousand genes - ✔✔prokaryotic DNA
✔✔Small rings of DNA with only a few genes and floating in the cytoplasm - ✔✔Plasmid
DNA
✔✔In DNA double helix, the two DNA chains are held together by: - ✔✔Hydrogen
bonds between the pair of bases
✔✔How do the DNA molecules in various species differ from one another? - ✔✔The
number of genes and non-coding regions.
✔✔Regarding the out of conformance water bath, select the most appropriate course of
action for the technician. - ✔✔Report the problem to QA or individual in charge of repair,
and place an "Out of Service" label on the water bath.
✔✔Why are enzyme solutions always prepared using a buffered solvent at a specific
pH? - ✔✔A buffered solvent is resistant to fluctuations in pH, because it is made with a
combination of a weak acid and its conjugate base. Enzymes lose function outside of a
narrow pH range.
✔✔Why does increasing the temperature of the reactants increase the rate of a
chemical reaction? - ✔✔Heat energy causes the particles of the reactants to move
faster, and therefore react with each other more frequently
✔✔Naturally occurring enzymes involved with DNA replication, and which are also used
as tools in biotechnology, include: - ✔✔DNA Polymerase and DNA Ligase
✔✔Primary (1⁰) structure - ✔✔Amino acids linked together by peptide bonds
✔✔Secondary (2⁰) structure - ✔✔Three dimensional polypetide with alpha helices and
beta sheets due to hydrogen bonding
✔✔Tertiary (3⁰) structure - ✔✔Final three dimensional 3D shape
✔✔Quaternary (4⁰) structure - ✔✔Multipolypeptides forming a larger complex protein
✔✔Select the letter that represents the correct order of assembly in the cell: - ✔✔amino
acid, polypeptide, protein
, ✔✔Why does the rate of a chemical reaction increase with increasing temperature? -
✔✔Increased temperature increases the frequency of collisions between molecules
✔✔If a structural gene's code is "TAC ATG CCC TTA ATC," what will the mRNA
transcript be? - ✔✔AUG UAC GGG AAU UAG
✔✔During the process of translation: - ✔✔mRNA is translated into proteins.
✔✔Where does translation take place in prokaryotes? - ✔✔At the ribosomes
✔✔Determining the presence of a specific protein - ✔✔ELISA
✔✔Determining the size and purity of a specific protein - ✔✔SDS PAGE
✔✔Determining the time period protein remains active - ✔✔Stability
✔✔Determining the amount of a protein present - ✔✔Spectrophotometer
✔✔Determining the protein's activity - ✔✔Enzyme activity
✔✔Identification of a DNA sequence unique to a specific virus - ✔✔Genetic
✔✔Genetically altered bacteria that can breakdown and consume oil - ✔✔Enviromental
✔✔Genetically engineered crops that tolerate environmental stresses, such as extreme
temperature - ✔✔Agricultural
✔✔Genetically engineered cells that make treatments for disease -
✔✔Biopharmeceutical
✔✔Which of the following are advantages to treating diabetics with genetically
engineered human insulin, rather than pig or cow insulin? - ✔✔There is less chance of
an immune response to the human insulin.
Ethical issues are avoided concerning the use of animals.
It is a more efficient process to purify insulin from yeast or bacteria cultures than it is
from animal organs
✔✔"Bioethics" is best described as: - ✔✔The study of decision making as it applies to
moral decisions that must be made due to advances in biology and technology.
✔✔Which of the following are permitted in the laboratory? - ✔✔Eye glasses
