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Genome, Genes, DNA Extraction, and Inheritance Quiz

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Genome, Genes, DNA Extraction, and Inheritance Quiz

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Questions and Answers

Which of the following accurately describes the structure of DNA?

A single-stranded helix

Composed of three strands coiled into a triple helix

A double-stranded helix with parallel strands (correct)

Contains only one type of nitrogenous base

In the nervous system, which component is responsible for transmitting electrical impulses to muscles or glands?

Relay neurones

Sensory receptors

Synapses

Motor neurones (correct)

What is the primary function of stem cells in animals?

Producing neurotransmitters

Differentiating into specialized cells (correct)

Forming myelin sheaths

Generating sensory receptors

Which process is responsible for the formation of genetically different haploid gametes?

Meiosis Signup and view all the answers

What is the role of relay neurones in the central nervous system?

Integrate sensory information and transmit signals to other neurons Signup and view all the answers

Which statement best describes the importance of cell differentiation in development?

Cell differentiation is crucial for specialized cell functions Signup and view all the answers

Which of the following is NOT a key stage of mitosis?

Karyokinesis Signup and view all the answers

What is the primary function of mitosis in multicellular organisms?

To produce genetically identical daughter cells for growth and repair Signup and view all the answers

Which of the following is NOT a characteristic of cancer cells?

Ability to differentiate into specialized cell types Signup and view all the answers

Which of the following is a function of enzymes in biological systems?

All of the above Signup and view all the answers

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 Signup and view all the answers

What is the primary role of osmosis in plant cells?

To maintain the structural integrity of the cell wall Signup and view all the answers

What are the building blocks of DNA?

Nucleotides Signup and view all the answers

Which term describes a section of a DNA molecule that codes for a specific protein?

Gene Signup and view all the answers

What term refers to different versions of a gene?

Allele Signup and view all the answers

How is the sex of offspring determined at fertilization?

By the number of chromosomes from each parent Signup and view all the answers

What causes most phenotypic features, resulting in different characteristics?

Multiple gene inheritance Signup and view all the answers

What influences phenotype variation, including differences as a result of mutation and sexual reproduction?

Genetic variation Signup and view all the answers