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QUIZ 1

Quiz by Ailynn Vel Rayos

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45 questions
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  • Q1

    Observation is the process of noticing and describing events or processes in a careful, orderly way.

    true
    false
    True or False
    30s
  • Q2

    Inference is a logical interpretation based on prior knowledge and experience

    true
    false
    True or False
    30s
  • Q3

    Hypothesis- a possible explanation for a set of observations or possible answer to a scientific question

    true
    false
    True or False
    30s
  • Q4

    variable that is observed and that changes in response to the independent variable; also called the responding variable

    control variable

    dependent variable

    independent variable

    30s
  • Q5

    factor in a controlled experiment that is deliberately changed; also called manipulated variable

    independent variable

    control variable

    dependent variable

    30s
  • Q6

    signal to which an organism responds

    Users enter free text
    Type an Answer
    30s
  • Q7

    experiment in which only one variable is changed

    Users enter free text
    Type an Answer
    30s
  • Q8

    well-tested explanation that unifies a broad range of observations and hypotheses, and enables scientists to make accurate predictions about new situations

    Users enter free text
    Type an Answer
    30s
  • Q9

    Structures found in a eukaryotic cell but not in a bacterial cell are:

    mutiple chromosomes

    membrane-bound organelles

    cell nuclei

    all of the choices

    30s
  • Q10

    Prokaryotes can only live in certain environments on Earth.

    false
    true
    True or False
    30s
  • Q11

    Which of the following are used by at least some bacteria for movement?

    all of the above

    pili

    flagella

    cytoplasmic projections

    30s
  • Q12

    spiral-shaped bacteria

    cytoplasm

    spirillum

    flagella

    ribosome

    30s
  • Q13

    get energy from chemicals taken from the environment

    heterotrophs

    chemotrophs

    autotrophs

    photosynthesis

    30s
  • Q14

    phototrophic bacteria : sunlight ::

     chemotrophic bacteria : dead organisms

    chemoautotrophic bacteria : inorganic molecules

    heterotrophic bacteria : inorganic molecules

    photosynthesis : nitrification

    30s
  • Q15

    One difference between human body cells and bacterial cells is that bacterial cells have:

    no DNA

    an outer cell wall made up of phosphates

    a cell wall made up of peptidoglycan

    no ribosomes

    30s

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