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Cells and Life Processes

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Cell Theory

Subtopic

Cell Theory under Cells and Life Processes for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which scientist's contribution to the cell theory was most related to the origin of new cells?

    A.

    Schleiden

    B.

    Schwann

    C.

    Virchow

    D.

    Hooke

  2. 2.

    What does 'MRS GREN' help students remember?

    A.

    The names of famous scientists

    B.

    The parts of a microscope

    C.

    The seven life processes of living things

    D.

    The steps of the cell theory

  3. 3.

    Which of these is the correct order of organization from simplest to most complex?

    A.

    Organ -> Tissue -> Cell

    B.

    Cell -> Tissue -> Organ

    C.

    Tissue -> Organ -> Cell

    D.

    Organ -> Cell -> Tissue

Download the worksheet for Cells and Life Processes - Cell Theory to practice offline. It includes additional chapter-level practice questions.

Microscopy Skills

Subtopic

Microscopy Skills under Cells and Life Processes for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    How many lenses does a 'compound' light microscope use to magnify an image at one time?

    A.

    One

    B.

    Two

    C.

    Four

    D.

    Eight

  2. 2.

    Why should you never use the coarse adjustment knob with the high-power objective?

    A.

    It will blur the image

    B.

    The lens is very long and might crush the slide

    C.

    The light will become too dim

    D.

    The nosepiece will stop rotating

  3. 3.

    What is the total magnification if the eyepiece is 5×5\times and the objective lens is 10×10\times?

    A.

    15×15\times

    B.

    50×50\times

    C.

    500×500\times

    D.

    2×2\times

Download the worksheet for Cells and Life Processes - Microscopy Skills to practice offline. It includes additional chapter-level practice questions.

Plant vs. Animal Cells

Subtopic

Plant vs. Animal Cells under Cells and Life Processes for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of these would be found in a cheek cell (animal) but not in a bacterial cell?

    A.

    Cell membrane

    B.

    A nucleus

    C.

    DNA

    D.

    Cytoplasm

  2. 2.

    In the levels of organization, which level is the human heart?

    A.

    Cell

    B.

    Tissue

    C.

    Organ

    D.

    Organism

  3. 3.

    Which organelle is responsible for maintaining the turgor pressure (stiffness) in a plant cell?

    A.

    Large central vacuole

    B.

    Nucleus

    C.

    Ribosome

    D.

    Golgi apparatus

Download the worksheet for Cells and Life Processes - Plant vs. Animal Cells to practice offline. It includes additional chapter-level practice questions.

Organelles and Functions

Subtopic

Organelles and Functions under Cells and Life Processes for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which part of the cell provides a framework to help the cell maintain its shape, similar to a skeleton?

    A.

    Cytoskeleton

    B.

    Cell wall

    C.

    Mitochondria

    D.

    Nucleus

  2. 2.

    Which of the following represents the correct sequence from simplest to most complex?

    A.

    Organ →\rightarrow Tissue →\rightarrow Cell

    B.

    Cell →\rightarrow Tissue →\rightarrow Organ

    C.

    Tissue →\rightarrow Cell →\rightarrow Organ

    D.

    Organ →\rightarrow Cell →\rightarrow Tissue

  3. 3.

    Which organelle is responsible for the 'Rough' appearance of the Rough Endoplasmic Reticulum?

    A.

    Mitochondria

    B.

    Lysosomes

    C.

    Ribosomes

    D.

    Vacuoles

Download the worksheet for Cells and Life Processes - Organelles and Functions to practice offline. It includes additional chapter-level practice questions.

Specialized Cells

Subtopic

Specialized Cells under Cells and Life Processes for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the main function of the tail on a sperm cell?

    A.

    To carry DNA

    B.

    To provide energy

    C.

    To propel the cell towards the egg

    D.

    To protect the head

  2. 2.

    Which cell is specialized for moving the heart to pump blood?

    A.

    Skeletal muscle cell

    B.

    Smooth muscle cell

    C.

    Cardiac muscle cell

    D.

    Nerve cell

  3. 3.

    Which specialized plant cell is long and cylindrical, standing upright like a column to capture sunlight?

    A.

    Guard cell

    B.

    Palisade cell

    C.

    Root hair cell

    D.

    Epidermal cell

Download the worksheet for Cells and Life Processes - Specialized Cells to practice offline. It includes additional chapter-level practice questions.

Levels of Biological Organization

Subtopic

Levels of Biological Organization under Cells and Life Processes for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the basic hierarchy of life from least complex to most complex?

    A.

    Cell, Tissue, Organ, Organ System, Organism

    B.

    Organism, Organ System, Organ, Tissue, Cell

    C.

    Cell, Organ, Tissue, Organ System, Organism

    D.

    Tissue, Cell, Organ, Organ System, Organism

  2. 2.

    Which level of organization is the 'Excretory System'?

    A.

    Organ

    B.

    Organ system

    C.

    Tissue

    D.

    Organism

  3. 3.

    A single red blood cell is at which level of organization?

    A.

    Organ

    B.

    Tissue

    C.

    Cell

    D.

    Organism

Download the worksheet for Cells and Life Processes - Levels of Biological Organization to practice offline. It includes additional chapter-level practice questions.

Cells and Life Processes - Grade 7 Science (IB) | Krit.club