Lesson 2.1.6b

2.1.6b Cell diversity and organisation into tissues Quiz: OCR Biology, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 2.1.6b, Cell diversity and organisation into tissues: 20 multiple choice questions for the OCR Biology (H020), Unit 1: Foundations in biology, written with Revision Ninja.

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The 20 questions

  1. What main advantage do mature mammalian erythrocytes gain by lacking a nucleus?

    • More haemoglobin space
    • Faster cell division
    • Increased protein synthesis
    • Greater ATP production

  2. How are squamous epithelial cells adapted for rapid diffusion?

    • Thin and flat
    • Thick and layered
    • Cuboidal and packed
    • Ciliated and tall

  3. What is the primary function of ciliated epithelial cells in the trachea?

    • Moving trapped mucus
    • Exchanging respiratory gases
    • Absorbing dissolved nutrients
    • Secreting digestive enzymes

  4. Which adaptation enables palisade mesophyll cells to carry out efficient photosynthesis?

    • Lignified cell walls
    • Lack of nuclei
    • Large surface hairs
    • Abundant chloroplasts

  5. How are root hair cells adapted to maximise water and ion absorption?

    • Large surface area
    • Thick outer cuticle
    • Multiple nuclei
    • High chlorophyll content

  6. Which structures in plant leaves have their opening and closing controlled by guard cells?

    • Stomata
    • Hydathodes
    • Chloroplasts
    • Lenticels

  7. Which term describes a group of similar cells working together to perform a specific function?

    • Organelle
    • Organ
    • Organ system
    • Tissue

  8. Which substance impregnates and waterproofs the walls of dead xylem vessel elements?

    • Cellulose
    • Suberin
    • Chitin
    • Lignin

  9. Which cells provide metabolic support to living phloem sieve tube elements?

    • Companion cells
    • Parenchyma cells
    • Guard cells
    • Sclerenchyma cells

  10. What name is given to unspecialised cells that can divide to produce differentiated cells?

    • Gametes
    • Stem cells
    • Somatic cells
    • Differentiated cells

  11. In adult humans, where do both erythrocytes and neutrophils originate from stem cells?

    • Lymph nodes
    • Bone marrow
    • Spleen
    • Thymus gland

  12. Where are the plant stem cells located that differentiate into xylem and phloem vessels?

    • Meristems
    • Mesophyll
    • Epidermis
    • Endodermis

  13. What primary molecule do mitochondria in the sperm midpiece supply to power movement?

    • Lactic acid
    • ATP
    • Glycogen
    • Glucose

  14. The stomach is which level of organisation?

    • Organ
    • Organ system
    • Tissue
    • Cell

  15. Cartilage is an example of which level of organisation?

    • Tissue
    • Organ system
    • Cell
    • Organ

  16. What is a primary medical application of stem cells in regenerative medicine?

    • Tissue repair
    • Hormone secretion
    • Antibody production
    • Vaccine creation

  17. Ciliated and goblet cells in the trachea together form:

    • A stem cell line
    • Ciliated epithelial tissue
    • A single organ
    • An organ system

  18. Which feature of a neutrophil nucleus allows it to squeeze through small capillaries?

    • Absent nucleus
    • Double nucleus
    • Spherical nucleus
    • Lobed nucleus

  19. What major biological risk is associated with uncontrolled division of transplanted stem cells?

    • Organ shrinkage
    • Viral infection
    • Tumour formation
    • Immune rejection

  20. Which plant tissue layer produces new xylem and phloem cells through meristematic activity?

    • Cork cambium
    • Vascular cambium
    • Ground tissue
    • Apical meristem

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