NEW
Font size
WorksheetsCollege Biology 1005 - Study Questions | Genetics and DNA PT2
Total questions: 51
Worksheet time: 26mins
What is the full form of DNA?
Deoxyribonucleic acid
Deoxyribose acid
Deoxynucleic acid
Deoxyribogen acid
What role does DNA play in living organisms?
It serves as a source of energy.
It acts as a hereditary molecule passed from parents to offspring.
It is a structural component of cells.
It is a waste product of metabolism.
Which of the following is true about DNA?
It is unique to each species.
It is common to all living organisms.
It is only found in animals.
It is only found in plants.
How does DNA function in the development of an individual?
It provides energy for cellular processes.
It serves as the instruction manual for how to build an individual.
It acts as a defense mechanism against diseases.
It regulates the temperature of the body.
Where is DNA found in eukaryotic cells?
Cytoplasm
Nucleus
Cell membrane
Ribosome
In what form is DNA found within the nucleus?
Chromatid
Chromosome
Chromoplast
Chromophore
What is a chromosome composed of?
Multiple RNA molecules
Single DNA molecule wrapped around proteins
Lipid bilayer
Carbohydrate chains
What is a genome?
A single chromosome in an organism
A complete set of genetic instructions encoded in all the chromosomes of an organism
A protein that regulates cell functions
A type of cell found in the human body
What are the subunits that make up DNA?
Amino acids
Nucleotides
Fatty acids
Proteins
What components make up a nucleotide?
A sugar, a lipid, and a base
A sugar, a phosphate, and a base
A sugar, a protein, and a base
A sugar, a carbohydrate, and a base
What shape do two strands of nucleotides form when they pair up and twist around each other?
Single helix
Double helix
Triple helix
Quadruple helix
What forms the outside "backbone" of the DNA structure?
Bases
Sugars and phosphates
Proteins
Lipids
What forms the internal "rungs" of the DNA structure?
Sugars
Phosphates
Bases
Proteins
Which of the following is not a base found in DNA?
Adenine (A)
Thymine (T)
Uracil (U)
Guanine (G)
What base pairs with cytosine in DNA?
Adenine (A)
Thymine (T)
Guanine (G)
Uracil (U)
Which base is represented by the letter 'T' in DNA?
Thymine
Threonine
Tyrosine
Tryptophan
What type of bonding holds the two strands of DNA together?
Covalent bonding
Ionic bonding
Hydrogen bonding
Metallic bonding
According to complementary base pairing rules, which base does adenine (A) pair with?
Cytosine (C)
Guanine (G)
Thymine (T)
Uracil (U)
According to complementary base pairing rules, which base does cytosine (C) pair with?
Adenine (A)
Thymine (T)
Guanine (G)
Uracil (U)
What makes the sequence of nucleotides along a strand of DNA unique?
The number of nucleotides
The type of sugar in the backbone
The specific sequence of nucleotides
The presence of ribose
What determines individual characteristics according to the structure of DNA?
The length of the DNA strand
The order of the bases
The type of phosphate group
The presence of uracil
What is a protein?
A macromolecule made of repeating amino acid subunits.
A simple sugar used for energy.
A type of lipid used for storing energy.
A nucleic acid responsible for genetic information.
Which of the following is a function of proteins?
Muscle contraction, facilitating chemical reactions, and fighting infection.
Storing genetic information.
Providing insulation and energy storage.
Transporting oxygen in the blood.
What are the building blocks of proteins?
Carbohydrates
Lipids
Amino acids
Nucleic acids
How many different amino acids are there?
10
15
20
25
What is common to all amino acids?
They all have different core structures.
They all have the same basic core structure.
They all have the same side chain.
They all have different chemical properties.
What is unique to each amino acid?
The number of hydrogen atoms
The basic core structure
The chemical side group
The presence of oxygen
What do amino acids form when they bond together?
A linear chain
A circular structure
A double helix
A branched chain
What determines the shape and function of a protein?
The sequence of amino acids
The temperature of the environment
The pH level of the solution
The presence of water
Into what structure does the amino acid chain fold?
A 3-D protein
A 2-D sheet
A single strand
A quadruple helix
What happens when an amino acid in a protein sequence is changed?
The protein's 3-D shape changes.
The protein becomes inactive.
The protein's sequence remains the same.
The protein's function is unaffected.
What determines the function of a protein?
The number of amino acids.
The shape of the protein.
The temperature of the environment.
The pH level of the solution.
What do genes encode instructions for?
Carbohydrates
Proteins
Lipids
Vitamins
What is a sequence of DNA that contains the instructions to make one or more proteins called?
Chromosome
Gene
Ribosome
Enzyme
Where are genes found?
On proteins
On chromosomes
In the cytoplasm
In the cell membrane
What does each chromosome carry?
Identical genes
A unique set of genes
No genes
Only one gene
What is the synthesis of a protein from a gene called?
Gene replication
Gene mutation
Gene expression
Gene translation
What is the function of the regulatory sequence in a gene?
Controls the amino acid sequence of the protein
On-off switch for the gene
Transports proteins
Replicates DNA
What does the coding sequence of a gene control?
On-off switch for the gene
Transcription of RNA
Controls the amino acid sequence of the protein
Cell division
What is gene expression?
The process of converting information from the coding sequence of a gene into protein
The process of DNA replication
The process of cell division
The process of photosynthesis
What is the first step in the process from DNA to protein?
Translation
Transcription
Replication
Mutation
What is the final product of gene expression?
DNA sequence
mRNA sequence
Amino acid sequence of protein
Lipid molecule
What are the two main steps of gene expression?
A) Replication and Transcription
B) Transcription and Translation
C) Translation and Replication
D) Transcription and Replication
What does transcription involve in the process of gene expression?
A) Converting RNA to protein
B) Converting DNA to RNA
C) Converting protein to DNA
D) Converting RNA to DNA
What does translation involve in the process of gene expression?
A) Converting DNA to RNA
B) Converting RNA to protein
C) Converting protein to DNA
D) Converting DNA to protein
Where does transcription occur in eukaryotic cells?
Cytoplasm
Nucleus
Ribosome
Cell membrane
Where does transcription occur in prokaryotic cells?
Nucleus
Ribosome
Cytoplasm
Mitochondria
Where does translation occur?
Nucleus
Ribosome
Golgi apparatus
Endoplasmic reticulum
What is synthesized from the instructions encoded in genes during transcription?
Ribosomal RNA (rRNA)
Transfer RNA (tRNA)
Messenger RNA (mRNA)
Protein
What is the role of RNA polymerase in transcription?
It binds to the regulatory sequence of the gene's coding region.
It unwinds the DNA strands.
It synthesizes proteins.
It repairs DNA mutations.
What happens to the DNA strands during transcription?
They are replicated.
They unwind, exposing the coding sequence of the gene.
They are degraded.
They form a double helix.
