BACE PRACTICE SOLUTION TEST 2026
COMPLETE QUESTIONS AND ANSWERS
GRADED A+
●● t/f: A single base pair change in a gene's DNA sequence can affect
the shape and function of the protein it encodes..
Answer: true
●● t/f:The three-dimensional structure of a protein is largely determined
by the amino acid sequence..
Answer: true
●● A structural gene's code is 5' TAC ATG CCC TTA ATC 3', what will
the mRNA transcript be?.
Answer: 3' AUG UAC GGG AAU UAG 5'
●● Circular, long DNA containing several thousand genes.
Answer: Prokaryotic DNA
●● Cytoplasmic, circular DNA containing only a few genes.
Answer: plasmid DNA
,●● Linear, long pieces of DNA with many thousands of genes, contained
within a nucleus.
Answer: Eukaryotic DNA
●● How does DNA differ from one species to another?.
Answer: The number of genes and non-coding regions
●● The enzyme maltase catalyzes the break down of maltose into
glucose. A technician added maltase to a solution of maltose to be
incubated at 37°C. Samples were taken from the reaction tube every five
minutes over the course of one hour, to measure the glucose
concentration. After an hour, the technician noticed the water bath failed
to reach 37°C (it only warmed to 25°C).
Which of the following is the most likely outcome of the reaction?.
Answer: The enzyme activity would decrease, yielding the same level of
glucose over a longer time period.
●● Carbon dioxide as a by-product benefits the brewing and baking
industry in a process called fermentation. When microorganisms
(usually yeast) undergo fermentation, they obtain their energy by:.
Answer: Anaerobic respiration
●● t/f:A solvent is the dissolved matter in a solution..
Answer: false
, ●● Carbohydrates.
Answer: Example: cellulose. Functions: energy storage, receptors,
structure of plant cell wall.
●● Lipids.
Answer: Example: cholesterol. Functions: membrane structure, energy
storage.
●● Nucleic acids.
Answer: example: RNA. Functions: information storage and transfers
●● Proteins.
Answer: example: enzyme. Function: structure, receptors and transport
●● Which of the following should be used to calculate the amount of
compound required to make a solution?.
Answer: Molecular weight
●● bond type?: NaCl.
Answer: Ionic
●● bond type?: H2O.
COMPLETE QUESTIONS AND ANSWERS
GRADED A+
●● t/f: A single base pair change in a gene's DNA sequence can affect
the shape and function of the protein it encodes..
Answer: true
●● t/f:The three-dimensional structure of a protein is largely determined
by the amino acid sequence..
Answer: true
●● A structural gene's code is 5' TAC ATG CCC TTA ATC 3', what will
the mRNA transcript be?.
Answer: 3' AUG UAC GGG AAU UAG 5'
●● Circular, long DNA containing several thousand genes.
Answer: Prokaryotic DNA
●● Cytoplasmic, circular DNA containing only a few genes.
Answer: plasmid DNA
,●● Linear, long pieces of DNA with many thousands of genes, contained
within a nucleus.
Answer: Eukaryotic DNA
●● How does DNA differ from one species to another?.
Answer: The number of genes and non-coding regions
●● The enzyme maltase catalyzes the break down of maltose into
glucose. A technician added maltase to a solution of maltose to be
incubated at 37°C. Samples were taken from the reaction tube every five
minutes over the course of one hour, to measure the glucose
concentration. After an hour, the technician noticed the water bath failed
to reach 37°C (it only warmed to 25°C).
Which of the following is the most likely outcome of the reaction?.
Answer: The enzyme activity would decrease, yielding the same level of
glucose over a longer time period.
●● Carbon dioxide as a by-product benefits the brewing and baking
industry in a process called fermentation. When microorganisms
(usually yeast) undergo fermentation, they obtain their energy by:.
Answer: Anaerobic respiration
●● t/f:A solvent is the dissolved matter in a solution..
Answer: false
, ●● Carbohydrates.
Answer: Example: cellulose. Functions: energy storage, receptors,
structure of plant cell wall.
●● Lipids.
Answer: Example: cholesterol. Functions: membrane structure, energy
storage.
●● Nucleic acids.
Answer: example: RNA. Functions: information storage and transfers
●● Proteins.
Answer: example: enzyme. Function: structure, receptors and transport
●● Which of the following should be used to calculate the amount of
compound required to make a solution?.
Answer: Molecular weight
●● bond type?: NaCl.
Answer: Ionic
●● bond type?: H2O.
