18 Questions
Which of the following accurately describes the structure of DNA?
A double-stranded helix with parallel strands
In the nervous system, which component is responsible for transmitting electrical impulses to muscles or glands?
Motor neurones
What is the primary function of stem cells in animals?
Differentiating into specialized cells
Which process is responsible for the formation of genetically different haploid gametes?
Meiosis
What is the role of relay neurones in the central nervous system?
Integrate sensory information and transmit signals to other neurons
Which statement best describes the importance of cell differentiation in development?
Cell differentiation is crucial for specialized cell functions
Which of the following is NOT a key stage of mitosis?
Karyokinesis
What is the primary function of mitosis in multicellular organisms?
To produce genetically identical daughter cells for growth and repair
Which of the following is NOT a characteristic of cancer cells?
Ability to differentiate into specialized cell types
Which of the following is a function of enzymes in biological systems?
All of the above
Which of the following is a key characteristic of diffusion as a method of transport across cell membranes?
It is a process that is driven by the concentration gradient of the substance being transported
What is the primary role of osmosis in plant cells?
To maintain the structural integrity of the cell wall
What are the building blocks of DNA?
Nucleotides
Which term describes a section of a DNA molecule that codes for a specific protein?
Gene
What term refers to different versions of a gene?
Allele
How is the sex of offspring determined at fertilization?
By the number of chromosomes from each parent
What causes most phenotypic features, resulting in different characteristics?
Multiple gene inheritance
What influences phenotype variation, including differences as a result of mutation and sexual reproduction?
Genetic variation
Test your knowledge on nucleotides, DNA extraction from fruit, differences in inherited characteristics, and basic genetic terminologies such as chromosome, gene, allele, and dominant traits.
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