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SCIENCE 7 2ND QUARTER PRETEST

Quiz by Jane Ethel David

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40 questions
Show answers
  • Q1

    Which of the following BEST describes the function of a microscope?

    It is an optical instrument that can magnify the image of atoms and cells.

    It is a laboratory instrument used in studying the specimens of living things.

    It is a tool that scientists use in conducting experiments.

    It is an instrument that can enlarge the cell.

    120s
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  • Q2

    Who was the scientist who examined bacteria, blood cells, yeasts, and protozoans using the microscope that he invented?

    Anton van Leeuwenhoek

    Zacharias Janssen 

    Galileo Galilei 

    Robert Hooke

    120s
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  • Q3

    Which part of the microscope should be manipulated if the Low Power Objective (LPO)  needs to be adjusted?

    Stage

    Eyepiece

    Light source

    Coarse adjustment knob

    120s
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  • Q4

    What is the function of a light source in the compound light microscope?

    It makes the image of the specimen visible.

    It enlarges the size of the specimen.

    It provides illumination to the specimen.

    It magnifies the image of the specimen.

    120s
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  • Q5

    Which of the following statements is the correct way of preparing a specimen?

    Position the coverslip at an angle to the slide before covering the entire specimen.

    Avoid the contamination of the specimen by covering it with a cover slip.

    Lift the coverslip before covering the specimen. 

    Cover the specimen quickly using a coverslip.

    120s
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  • Q6

    Which part of the microscope contains a magnifying lens  where you look through to observe the specimen?

    Question Image

    A

    D

    B

    C

    120s
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  • Q7

    Which part will you adjust while viewing under HPO if the  cut out small letter “e” you are observing is not clear?

    Question Image

    A

    E

    B

    C

    120s
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  • Q8

    If a microscope has a 4x ocular lens and a 10x objective, what is the total magnification of the object being viewed?

    4x

    14x

    40x

    400x

    120s
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  • Q9

    Which of the following shows the letter “e” as seen under the microscope?

    Answer Image
    Answer Image
    Answer Image
    Answer Image
    120s
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  • Q10

    Why is it necessary for the specimen to be thinly sliced so it can be observed under the microscope?

    The image will be clearer.

    The image would be bigger.

    The high magnification objective can be used.

    The light could pass through the specimen.

    120s
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  • Q11

    Which sequence of biological levels of organization is correctly arranged from most complex to simplest?

    organism - organ system - organ - tissue - cell

    cell - tissue - organ - organ system - organism

    cell - organ - organ system - tissue - organism

     organism - organ - organ system - tissue - cell

    120s
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  • Q12

    Which level of organization in an organism is the basic unit of life?

    organ system

    organ

    tissue

    cell

    120s
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  • Q13

    An organ system of a complex form of organism is made up of different organs that perform a specific function. Which of the following organs DOES NOT match its function?

    Heart: Circulation

    Lung: Respiration

    Kidney: Excretion

    Muscle: Support

    120s
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  • Q14

    Which of the following statements correctly describe the organ system of plants?

    Plants and animals have the same set of organ systems

    Plants have flowers that reproduce asexually.

    Plant’s shoot system is made up of flower, leaf and stem.

    Plants have a nervous system that coordinates the functions of other organs.

    120s
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  • Q15

    Which of the following examples describes a population?

    Six birds spotted this morning nesting on different trees at the Marikina River Park.

    Eight dogs and two cats roaming in one of the Barangays in Marikina.

    Five varieties of plants in a rectangular pot sold yesterday in Imelda’s Garden located in Marikina.

    Five Carabaos seen in Marikina City in 2019.

    120s
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  • Q16

    Which of the following pairs is NOT correctly matched?

    cell membrane: differentially permeable 

    ribosomes: protein synthesis 

    chloroplasts: photosynthesis

    mitochondria: digestive enzymes

    120s
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  • Q17

    Which structures are common to both plants and animals? 

    Question Image

    Centrioles and Cell Coats

    Cell wall and Chloroplast 

    Chloroplast and Cytoplasm  

    Nucleus and Mitochondrion  

    120s
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  • Q18

    Which parts of the cell are unique to species of plants?

    Question Image

    Centrioles and Cell Coats

    Chloroplast and Cytoplasm

    Cell wall and Chloroplast

    Nucleus and Mitochondrion

    120s
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  • Q19

    Which part of this cell serves as the brain that controls the other parts of the cell?

    Question Image

    1

    2

    3

    4

    120s
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  • Q20

    Which part of this cell provides strength and support to the entire cell?

    Question Image

    3

    1

    4

    2

    120s
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