BIOS 251 ACTUAL FINAL EXAM
2026 WITH QUESTIONS AND
WELL- VERIFIED CORRECT
ANSWERS | ALREADY GRADED
A+ | GUARANTEED A+ | BIOS 251
LATEST EXAM 2026 [NEW]
What is protein coagulation?
A) The loss of native protein structure
B) The formation of new interactions among denatured proteins
,C) The aggregation of tertiary structures
D) The break of the peptide chain - ANSWER- B) The formation of new
interactions among denatured proteins
Casein is one of the most abundant proteins in milk.
Which one of these compounds should NOT cause its denaturation if we add them
to a glass of milk?
A) Diluted saline solution
B) Citric acid pH=3
C) 60% Methanol
D) Saturated saline solution - ANSWER- A) Diluted saline solution
What happens when proteins in egg whites are denatured?
A) Their amino acids sequence is lengthened
B) New covalent bonds are formed between quaternary structures
C) They lose their 3D functional structure
D) Their amino acid sequence changes to from new functional proteins. -
ANSWER- C) They lose their 3D functional structure
What happens when you fry an egg?
A) Denatured proteins form new interactions
B) Heat removes water from an egg white, leading to the formation of a solid
C) Broken amino acids form new proteins
D) Proteins from the yolk are transferred to the egg white - ANSWER- A)
Denatured proteins form new interactions
What is gelatin?
,A) The interaction between proteins secondary structures
B) The quaternary structure ovalbumin
C) An amino acid
D) A food ingredient produced by a denaturation process - ANSWER- D) A food
ingredient produced by a denaturation process
Which of these is not a food that contains gelatin?
A) aspic
B) dried soups
C) Table jellies
D) cookies - ANSWER- D) cookies
Imagine that we vortex the tubes after adding citric acid to some egg whites. What
would happen?
A) No lumps would have formed
B) Less lumps would have formed
C) More lumps would have formed in less time
D) Nothing would happen - ANSWER- C) More lumps would have formed in less
time
Individuals with the appropriate number of chromosomes are called euploid,
whereas individuals with an errors in the number of chromosomes are described as
....
a) triploid
b) Mutaploid
c) Diploid
d) Aneuploid - ANSWER- d) Aneuploid
, Inherited genetic disorders, such as aneuploidy and chromosomal structural
rearrangement can arise when chromosomes behave abnormally during..
A) Copulation
B) Fertilization
C) Meiosis
D) Mitosis - ANSWER- C) Meiosis
Errors in meiosis are the cause of chromosomal abnormalities. Errors that occur
when pairs of homologous chromosomes or sister chromatids fail to separate
during meiosis are called...
A) duplication
B) Nondisjunction
C) translocation
D) Deletion - ANSWER- B) Nondisjunction
What percentage. of genetic information is passed on from parents to their
offspring?
A) 50 % from each parent
B) 100 % from their father
C) 75% from the father, 25% from the mother
D) 100% from the mother - ANSWER- A) 50 % from each parent
What would happen if you mix some egg whites in a copper bowl instead of a
crystal or plastic one?
A) The copper ions will add a reddish tone to the mix
B) The copper ions will stabilize already denatured proteins from egg whites
C) The copper ions won't affect the egg whites at all
D) The copper ions will avoid protein denaturation - ANSWER- B) The copper
ions will stabilize already denatured proteins from egg whites
2026 WITH QUESTIONS AND
WELL- VERIFIED CORRECT
ANSWERS | ALREADY GRADED
A+ | GUARANTEED A+ | BIOS 251
LATEST EXAM 2026 [NEW]
What is protein coagulation?
A) The loss of native protein structure
B) The formation of new interactions among denatured proteins
,C) The aggregation of tertiary structures
D) The break of the peptide chain - ANSWER- B) The formation of new
interactions among denatured proteins
Casein is one of the most abundant proteins in milk.
Which one of these compounds should NOT cause its denaturation if we add them
to a glass of milk?
A) Diluted saline solution
B) Citric acid pH=3
C) 60% Methanol
D) Saturated saline solution - ANSWER- A) Diluted saline solution
What happens when proteins in egg whites are denatured?
A) Their amino acids sequence is lengthened
B) New covalent bonds are formed between quaternary structures
C) They lose their 3D functional structure
D) Their amino acid sequence changes to from new functional proteins. -
ANSWER- C) They lose their 3D functional structure
What happens when you fry an egg?
A) Denatured proteins form new interactions
B) Heat removes water from an egg white, leading to the formation of a solid
C) Broken amino acids form new proteins
D) Proteins from the yolk are transferred to the egg white - ANSWER- A)
Denatured proteins form new interactions
What is gelatin?
,A) The interaction between proteins secondary structures
B) The quaternary structure ovalbumin
C) An amino acid
D) A food ingredient produced by a denaturation process - ANSWER- D) A food
ingredient produced by a denaturation process
Which of these is not a food that contains gelatin?
A) aspic
B) dried soups
C) Table jellies
D) cookies - ANSWER- D) cookies
Imagine that we vortex the tubes after adding citric acid to some egg whites. What
would happen?
A) No lumps would have formed
B) Less lumps would have formed
C) More lumps would have formed in less time
D) Nothing would happen - ANSWER- C) More lumps would have formed in less
time
Individuals with the appropriate number of chromosomes are called euploid,
whereas individuals with an errors in the number of chromosomes are described as
....
a) triploid
b) Mutaploid
c) Diploid
d) Aneuploid - ANSWER- d) Aneuploid
, Inherited genetic disorders, such as aneuploidy and chromosomal structural
rearrangement can arise when chromosomes behave abnormally during..
A) Copulation
B) Fertilization
C) Meiosis
D) Mitosis - ANSWER- C) Meiosis
Errors in meiosis are the cause of chromosomal abnormalities. Errors that occur
when pairs of homologous chromosomes or sister chromatids fail to separate
during meiosis are called...
A) duplication
B) Nondisjunction
C) translocation
D) Deletion - ANSWER- B) Nondisjunction
What percentage. of genetic information is passed on from parents to their
offspring?
A) 50 % from each parent
B) 100 % from their father
C) 75% from the father, 25% from the mother
D) 100% from the mother - ANSWER- A) 50 % from each parent
What would happen if you mix some egg whites in a copper bowl instead of a
crystal or plastic one?
A) The copper ions will add a reddish tone to the mix
B) The copper ions will stabilize already denatured proteins from egg whites
C) The copper ions won't affect the egg whites at all
D) The copper ions will avoid protein denaturation - ANSWER- B) The copper
ions will stabilize already denatured proteins from egg whites
