#80.
Which level of protein structure is formed by the twisting and turning of the amino acid chain?
A
Quaternary structure
B
Primary structure
C
Secondary structure
D
Teritiary structure
Answer: Secondary structure
#81.
Which carbohydrate is present in germinating seeds and is a major sugar used in the brewing industry?
A
Sucrose
B
Lactose
C
Maltose
D
Fructose
Answer: Maltose
#82.
Glycogen is to carbohydrates as ____________________.
A
amino acid is to protein
B
lipid is to fat
C
collagen is to protein
D
nucleic acid is to DNA
Answer: collagen is to protein
#83.
What is the first step in staining a specimen on a microscope slide?
A
Applying an appropriate stain
B
Treating the sample with a surfactant
C
Adding chemical fixative
D
Mounting the sample on a microscope slide
Answer: Treating the sample with a surfactant
#84.
Which biomolecule is composed of nitrogenous base, five carbon sugar and one or more phosphate group?
A
Amino Acid
B
Protiens
C
Lipids
D
Nucleic Acids
Answer: Nucleic Acids
#85.
How many amino acids and peptide bond’s does a deptide have?
A
2 amino acids and 2 peptide bonds
B
2 amino acids and 3 peptide bonds
C
3 amino acids and 2 peptide bonds
D
2 amino acids and 1 peptide bonds
Answer: 2 amino acids and 1 peptide bonds
#86.
Which correctly describes the two strands of the double helix of the DNA?
A
They are coiled around each other
B
They are coiled around a common axis
C
They are coiled over protein sheath
D
They are coiled different
Answer: They are coiled around a common axis
#87.
Irvin wants to appear more muscular aside from going to the gym which of biomolecule must be further added to his diet?
A
Carbohydrates
B
Lipids
C
Proteins
D
Nucleic Acids
Answer: Proteins
#88.
What is fat made of?
A
Glycerol molecule linked by ester bonds to a fatty acid
B
Glycerol linked by linked by ester bonds to 3 fatty acids
C
Alcohol linked by ester bonds to 3 fatty foods
D
Glycerol molecule linked by ester bonds to 4 fatty acids
Answer: Glycerol linked by linked by ester bonds to 3 fatty acids
#89.
Which elements make up carbohydrates?
Carbon
Hydrogen
Nitrogen
Oxygen
A
I, II, II and IV
B
I, II and IV
C
I, II and III
D
II, III and IV
Answer: I, II and IV
#90.
Which constitute almost the entire dry weight of nails, claws, beak, horns, wool and large part of the outer layer.
A
Elastin
B
Fibroin
C
Keratin
D
Collagen
Answer: Keratin
#91.
Which of the following is found in RNA but NOT in DNA?
A
Adenine
B
Phosphate
C
Uracil
D
Thymine
Answer: Uracil
#92.
At room temperature, saturated fats are in __________ state.
A
gas
B
Liquid
C
sold
D
Semi-liquid
Answer: sold
#93.
One side of DNA molecule contains AGTCCG sequence of nucleotides. What would be the complementary sequence on the side?
A
GCCTGA
B
CUGAAU
C
AGTCCG
D
TCAGGGC
Answer: TCAGGGC
#94.
Which is responsible in breaking down carbohydrates in its components sugar molecule?
A
Oxidation
B
Condensation reaction
C
Glycoside bonding
D
Hydrolysis
Answer: Hydrolysis
#95.
A protein chemist would like to arrive at a precise separation of proteins. Which of the following must be conduct?
A
Xanthoproteic test
B
Ninja test
C
Biuret test
D
Electrophoresis
Answer: Electrophoresis
#96.
Which is the first step of gene expression, in which a particular segment of DNA is copied into m RNA by enzyme RNA polymerase?
A
Imitation
B
Elongation
C
Translation
D
Transcription
Answer: Transcription
#97.
Which is TRUE about polymerization reactions in which proteins area synthesized from amino acids?
A
The release energy
B
They are hydrolysis reactions
C
They result in the formation of peptide bonds
D
They result in the formation of water
Answer: They result in the formation of water
#98.
A person with two copies of the C? allele has curly hair two copies of the C? allele produce straight hair. Heterozygotes, with the C? C? genotype have wavy hair. The inheritance of hair texture in humans is an example of ______________.
A
co-dominance
B
polygenic inheritance
C
pleiotropy
D
incomplete dominance
Answer: incomplete dominance
#99.
A man with type A blood has a children with a woman who has type O blood. What is the chance that they have a child with type AB blood?