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WorksheetsDNA, Mitosis, Meiosis Unit Test
Total questions: 27
Worksheet time: 3570secs
What is the basic structure of DNA?
Double helix structure with a sugar-phosphate backbone and nitrogenous bases
Linear structure with a protein backbone and no nitrogenous bases
Triple helix structure with four different types of nitrogenous bases
Single-stranded structure with a sugar-phosphate backbone and nitrogenous bases
Explain the function of DNA in a cell.
DNA acts as a protective barrier around the cell nucleus.
DNA functions as a storage unit for water in a cell.
DNA provides instructions for protein synthesis
DNA serves as a source of energy for cellular respiration.
Describe the process of mitosis and its significance in cell division.
Mitosis is a process of cell division that only occurs in plant cells.
Mitosis is a process of cell division that leads to the formation of haploid cells.
Mitosis is a process of cell division that results in four genetically different daughter cells.
Mitosis is a process of cell division that ensures genetic stability by producing two identical daughter cells.
Differentiate between mitosis and meiosis in terms of the number of divisions and resulting cells.
Mitosis: 2 divisions, 4 cells; Meiosis: 1 division, 2 cells
Mitosis: 2 divisions, 2 cells; Meiosis: 1 division, 4 cells
Mitosis: 1 division, 4 cells; Meiosis: 2 divisions, 2 cells
Mitosis: 1 division, 2 cells; Meiosis: 2 divisions, 4 cells
Explain the importance of DNA replication in the cell cycle.
DNA replication is only important in prokaryotic cells
DNA replication leads to cell death
DNA replication has no impact on genetic diversity
DNA replication allows for the duplication of the genetic material.
What are the key components involved in DNA replication?
DNA polymerase, DNA helicase, RNA primase, DNA ligase, DNA template strands
DNA gyrase, DNA topoisomerase, DNA polymerase III, DNA primase, DNA template strands
Discuss the role of enzymes in the DNA replication process.
Enzymes help in unwinding the DNA double helix, synthesizing new DNA strands, and proofreading the replicated DNA.
Enzymes help in transcribing RNA instead of replicating DNA.
Enzymes are not involved in proofreading the replicated DNA.
Enzymes hinder the unwinding of the DNA double helix.
What is the significance of crossing over during meiosis?
Crossing over promotes genetic diversity.
Crossing over occurs during mitosis.
Crossing over prevents genetic diversity.
Crossing over leads to identical offspring.
How does DNA replication ensure genetic continuity in organisms?
DNA replication leads to random mutations in the genetic code.
DNA replication causes the loss of genetic information over time.
DNA replication creates new genetic information in each generation.
DNA replication copies the genetic information from one generation to the next.
Which type of cell division is described in the following statement: This produces variation by forming new combination of genetic materials
Mitosis
Meiosis
How many chromosome are typically found in a human somatic (body) cell
23
46
92
76
Where in the cell are genes located
Mitochondrion
Ribosome
Nucleus
Golgi apparatus
Use the base pairing rules to figure out the complementary DNA strand from this stand:
ATTCGGTAC
(a)
Use the base pairing rules to figure out the complementary mRNA strand from this stand:
ATT CGG TAC
(a)
State the differences between DNA and mRNA. (4 marks)
Describe the steps involved in production of protein , outlining the molecules involved, organelles and locations. (5 marks)
How many chromosome would be present in zygote of a cat if a sperm from a male cat contains 19 chromosome.
(a)
How many chromosome would be present in a neurone of a human if a sperm from a male contains 23 chromosome.
(a)
How many chromosome a red blood cell of a dog if a white blood cell contains 78 chromosome
(a)
How many chromosome are in a muscle cell of a giraffe if a skin cell contains 30 chromosome
(a)
A cell which contains two sets of chromosome is referred to as containing the number of chromosome
(a)
A cell which contains two sets of chromosome is referred to as containing the number of chromosome
(a)
A cell which contains two sets of chromosome is referred to as containing the (a) number of chromosome
A cell which contains one set of chromosomes is referred to as a _ cell
(a)
Distinguish between mitosis and meiosis based on :
Purpose
Number of cells made
Round of Division
Degree of variation
The type of cell division which would take place in the anthers of a flower
Mitosis
Meiosis
What type of cell division would happen to a zygote after fertilization
Mitosis
Meiosis
