Electricity Basics
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Questions and Answers

What does a switch do in an electric circuit?

  • It provides flow of charges
  • It stops the flow of electric current
  • It makes a conducting link between the cell and the bulb (correct)
  • It controls the heating effect of electric current

    • How is electric current expressed?

  • By the speed of the charges flowing
  • By the voltage of the circuit
  • By the resistance of the conductor
  • By the amount of charge flowing through a particular area in unit time (correct)

    • What happens if an electric circuit is broken?

  • The current changes direction
  • The current increases
  • The current decreases
  • The current stops flowing (correct)

    • What constitutes electricity moving through a conductor?

    <p>Electric charges</p> Signup and view all the answers

    What is a continuous and closed path of an electric current called?

    <p>Electric circuit</p> Signup and view all the answers

    What is the process by which organisms create genetically similar or identical copies of themselves without the contribution of genetic material from another organism?

    <p>Cloning</p> Signup and view all the answers

    Which type of reproduction involves the sexual interaction of two specialized reproductive cells to create a fertilized zygote?

    <p>Sexual reproduction</p> Signup and view all the answers

    What is the main puzzle for biologists in the evolution of sexual reproduction?

    <p>The two-fold cost of sexual reproduction</p> Signup and view all the answers

    In asexual reproduction, what does an organism create?

    <p>Genetically similar or identical copies of itself</p> Signup and view all the answers

    What is the significant feature of sexual reproduction compared to asexual reproduction?

    <p>Higher genetic variability in offspring</p> Signup and view all the answers

    Which form of reproduction involves the creation of genetically similar or identical copies of an organism without the involvement of another organism?

    <p>Cloning</p> Signup and view all the answers

    What is the significant cost associated with sexual reproduction?

    <p>Only 50% of organisms reproduce</p> Signup and view all the answers

    What is the main puzzle for biologists in the evolution of sexual reproduction?

    <p>Evolution of sexual reproduction</p> Signup and view all the answers

    In sexual reproduction, what are the specialized reproductive cells called?

    <p>Gametes</p> Signup and view all the answers

    What process involves typically a male fertilizing a female of the same species to create a fertilized zygote?

    <p>Fertilization</p> Signup and view all the answers

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