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WorksheetsSummative Test: Heredity, Inheritance and Variation
Total questions: 25
Worksheet time: 8mins
Which biomolecule is essential for storing and transmitting genetic information within cells?
Lipids
Proteins
Nucleic acids
Carbohydrates
What are the two types of nucleic acid?
Proteins and lipids
DNA and RNA
Carbohydrates and nucleotides
Carbohydrates and DNA
How do reproductive cells and body cells undergo mutation?
Errors in DNA replication or recombination
Exposure to sunlight
Eating unhealthy foods
Lack of exercise
What is gene mutation?
Changes in chromosome structure
Changes in the number of chromosomes
Changes in the nucleotide sequence of a gene
Changes in the expression of a gene
Where does DNA replication occur in cells?
Ribosomes
Golgi apparatus
Nucleus
Mitochondria
How does RNA differ from DNA in terms of sugar composition?
RNA contains ribose sugar, while DNA contains deoxyribose sugar.
RNA contains deoxyribose sugar, while DNA contains ribose sugar.
Both RNA and DNA contain ribose sugar.
Both RNA and DNA contain deoxyribose sugar
What is the function of DNA within cells?
Protein synthesis
Cellular respiration
Storing genetic information
Providing energy for cells
How does RNA differ from DNA in terms of structure?
RNA is double-stranded, while DNA is single-stranded.
RNA is typically single-stranded, while DNA is double-stranded.
RNA and DNA have the same structure.
RNA contains thymine, while DNA contains uracil.
Which enzyme is responsible for synthesizing RNA from a DNA template?
DNA polymerase
RNA polymerase
Helicase
Ligase
During which cellular process does DNA serve as a template to produce RNA?
Transcription
RNA synthesis
Translation
DNA replication
In which cellular organelle does protein synthesis occur?
Nucleus
Ribosome
Endoplasmic reticulum
Golgi apparatus
How does a deletion mutation differ from an insertion mutation?
Deletion removes a portion of a chromosome, while insertion adds extra genetic material.
Deletion adds extra genetic material, while insertion removes a portion of a chromosome.
Deletion and insertion mutations have the same effect.
Deletion and insertion mutations both involve rearranging chromosome structure.
What is the consequence of a gene mutation?
Changes in chromosome number
Alteration in the protein encoded by the gene
Loss of DNA replication
Duplication of genetic material
How does a chromosomal mutation differ from a gene mutation?
Chromosomal mutations involve changes in a single nucleotide, while gene mutations involve changes in chromosome structure.
Chromosomal mutations involve changes in chromosome structure or number, while gene mutations involve changes in the nucleotide sequence of a gene.
Chromosomal mutations occur during DNA replication, while gene mutations occur during protein synthesis.
Chromosomal mutations only affect reproductive cells, while gene mutations affect all cell types.
Which type of mutation involves a portion of one chromosome breaking off and attaching to another chromosome?
Deletion
Duplication
Inversion
Translocation
How does RNA polymerase know where to start transcribing a gene?
It randomly selects a region of DNA.
It binds to a specific region called the promoter.
It starts transcribing from the end of the DNA molecule.
It requires the presence of ribosomes to initiate transcription.
Why is DNA replication essential for cell division and growth?
DNA replication ensures the production of energy for cells.
DNA replication ensures that each daughter cell receives a complete set of genetic information.
DNA replication prevents mutations from occurring.
DNA replication is not essential for cell division.
How do mutations contribute to genetic diversity in populations?
Mutations introduce variations in the DNA sequence, which can lead to differences in traits among individuals.
Mutations decrease genetic diversity by causing harmful effects on organisms.
Mutations are always detrimental and do not contribute to genetic diversity.
Mutations only occur in reproductive cells and do not affect the overall genetic diversity of a population.
Why is it important for RNA to be single-stranded during protein synthesis?
Single-stranded RNA enhances the stability of the genetic code.
Single-stranded RNA allows for more efficient DNA replication.
Single-stranded RNA allows for flexibility and accessibility to ribosomes and other cellular machinery during protein synthesis.
Single-stranded RNA prevents mutations from occurring
Refer to your table of Codons.
The base sequence of DNA is TTA CCG ATC GAA. The sequence of RNA transcribed from this strand is _________.
AAU GGC UAG CUU
TCG CCC AUG CUA
GCG CCG ATG GUA
UAU CCG AUG CUA
Refer to your table of Codons.
The amino acids coded in the mRNA sequence GGA GCU AUU AAU GGC are ___ ____.
Gly-Ala-Ile-Asn-Gly
Gly-Ala-Iso-Asp-Gly
Glu-Gly-Ala-Gly-Asp
Gly-Iso-Gly-Ala-Glu
What do you call the triple base sequence that is complementary to the mRNA codons?
amino acid
codon
anticodon
polypeptide
Which type of mutation refers to the shifting the reading frame of the genetic code?
chromosome mutation
point mutation
frameshift mutation
translocation
A geneticist found that a particular mutation had no effect on the polypeptide encoded by the gene. This mutation probably involved ___________.
a deletion of a nucleotide
insertion of one nucleotide
an alteration of a start codon
substitution on one nucleotide
Which of the following disorders results from base substitution?
Down Syndrome
Sickle-Cell Anemia
Monosomy
Turner Syndrome
