IB Grade-12 Biology | Theme C: Interaction and Interdependence by Prakhar Chauhan | Learn Smarter
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Academics

Grades

Grade 8 Grade 9 Grade 10 Grade 11 Grade 12

Curriculum

CBSE ICSE IB
Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Professional Courses
Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

games
Typing
Memory
Math
English Adventures
Knowledge
Theme C: Interaction and Interdependence

The chapter explores the essential biological concepts of interaction and interdependence across various themes, including molecular biology with enzymes and metabolism, cellular respiration, photosynthesis, cellular communication, neural signaling, body systems integration, defense mechanisms against diseases, and ecosystem dynamics. Emphasis is placed on the interconnectivity of biological processes and the importance of energy flow and matter cycling in sustaining life.

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.

Sections

  • 1

    Molecules

    This section explores the vital roles of molecules such as enzymes in metabolism, cellular respiration, and photosynthesis.

    Learning Practice

  • 1.1

    Enzymes And Metabolism

    Enzymes are catalysts that facilitate metabolic reactions in organisms.

    Learning Practice

  • 1.2

    Cell Respiration

    Cell respiration is the process by which cells convert glucose into ATP for energy.

    Learning Practice

  • 1.3

    Photosynthesis

    Photosynthesis transforms light energy into chemical energy in plants, algae, and some bacteria.

    Learning Practice

  • 2

    Cells

    This section covers the fundamental concepts of enzymes, cellular respiration, and photosynthesis, illustrating their roles in metabolic processes.

    Learning Practice

  • 2.1

    Chemical Signaling (Hl Only)

    Chemical signaling is the process through which cells communicate and regulate various functions via signaling molecules.

    Learning Practice

  • 2.2

    Neural Signaling

    Neural signaling involves the transmission of information through neurons, highlighting the processes of resting potential, action potential, and synaptic transmission.

    Learning Practice

  • 3

    Organisms

    This section covers the integration of body systems and the immune response against diseases, illustrating how human physiology maintains homeostasis and protects against pathogens.

    Learning Practice

  • 3.1

    Integration Of Body Systems

    The human body comprises various systems that collaborate to maintain homeostasis and ensure effective functioning.

    Learning Practice

  • 3.2

    Defense Against Disease

    The immune system protects the body from pathogens through innate and adaptive immunity.

    Learning Practice

  • 4

    Ecosystems

    Ecosystems encompass interactions between populations, communities, and energy transfers that sustain ecological balance.

    Learning Practice

  • 4.1

    Populations And Communities

    This section explores the concepts of populations and communities within an ecosystem, detailing the interactions among species and factors influencing population dynamics.

    Learning Practice

  • 4.2

    Transfers Of Energy And Matter

    This section explores how energy and matter flow and cycle through ecosystems, detailing processes such as photosynthesis, cellular respiration, and nutrient cycling.

    Learning Practice

References

Untitled document (11).pdf

Class Notes

Memorization

What we have learnt

  • Enzymes are critical for me...
  • Cellular respiration consis...
  • Photosynthesis involves lig...

Final Test

Revision Tests