Biology SL
Biology SL
4
Chapters
553
Notes
Theme A - Unity & Diversity
Theme A - Unity & Diversity
Theme B - Form & Function
Theme B - Form & Function
Unraveling Carbon's Role in Life & Diverse Compounds!
Explore Macromolecule Production!
Unlocking Polymers Insightful Hydrolysis Digestion
Unlocking Monosaccharides Power & Impact
Unlocking Energy Starch & Glycogen’s Role
Unlocking Cellulose Plant's Structural Powerhouse
Unlocking Cell Recognition The Power of Glycoproteins
Explore Hydrophobic Lipid Properties
Unlocking Triglycerides Formation & Bonds Revealed
Uncover Fatty Acids Saturated Vs Unsaturated
Uncover Secrets Triglycerides & Adipose Tissue!
Unlocking Phospholipid Bilayers Formation Secrets!
Unlocking Steroids Gateway Through Cell Walls!
Unlock Protein Secrets Structure Of Amino Acids
Mastering Dipeptide Condensation Reactions!
Unlock Ultimate Diet Essential Amino Acids Guide!
Unlocking Peptide Chain Potentials Explore Infinity!
Unlocking Protein Secrets: Impact of pH & Temperature
Unlock Amino Acid Secrets: Basis of Protein Diversity!
Unlocking Protein Secrets The Role of Primary Structure
Unlock Protein Secrets Pleating & Coiling Insights!
Unlocking Protein Structure: A Deep Dive
Unlocking Protein Structures: Polar Vs Non-Polar Amino Acids
Explore Protein Structures Conjugated & Non-Conjugated
Unlocking Protein Secrets: Form & Function Insights
Explore the Foundations of Cell Membranes!
Unlocking Lipid Bilayers: Barriers & Solutions
Unlock Simple Diffusion Secrets in Cells!
Explore Integral & Peripheral Proteins in Membranes!
Unlocking Water Movement: Osmosis & Aquaporins Explored
Unlock Cellular Secrets: Channel Proteins Explained!
Unlock Active Transport Explore Pump Proteins!
Unlocking Membrane Permeability Secrets
Unlocking Glycoproteins & Glycolipids Secrets
Explore the Fluid Mosaic Model of Membrane Structure!
Unlocking Lipid Bilayers Fatty Acid Compositions
Unlock Cell Secrets: Cholesterol's Role in Membrane Fluidity
Unraveling Cell Secrets: Vesicle Formation & Fusion
Unlocking Neuronal Secrets Ion Channel Guide
Unlock Neuron Potential Sodium–Potassium Pump Insight
Indirect Active Transport Exploring Sodium-Glucose Cotransporters
Unlocking Cell Adhesion: The Key to Tissue Formation
Unlocking Cell Secrets: A Deep Dive Into Organelles
The Key Benefits Of Nucleus-Cytoplasm Separation In Eukaryotes
Unlocking Cell Secrets Benefits of Cytoplasm Compartmentalization
Unlocking Mitochondria Secrets of ATP Production
Unlocking Chloroplasts Key Structures For Photosynthesis
Double Membrane of the Nucleus Key Benefits & Functions
Unveiling Ribosomes Structure, Function & Nobel-Winning Discoveries
Unlocking The Mysteries Of The Golgi Apparatus
Unraveling The Secrets: How Vesicles Function In Cells
Cell Differentiation After Fertilization A Journey From Fusion To Specialization
Unveiling the Magic of 19th Century Stem Cells
Unlocking Secrets: Where Adult Human Stem Cells Hide And Their Power
Understanding Stem Cells Totipotent vs. Pluripotent vs. Multipotent
Unveiling Cell Size Key to Specialized Human Functions
Unlocking Cell Efficiency: The Critical Surface Area-To-Volume Ratio
Key Cellular Adaptations For Efficient Substance Exchange
Discovering Alveoli Adaptations Of Type I & II Pneumocytes In The Lungs
Unlocking Muscle Adaptation: Cardiac & Striated Cells
Unlocking Gamete Secrets: Sperm & Egg Adaptations
Explore Vital Gas Exchange in Organisms!
Unlock The Secrets Of Gas Exchange Surfaces!
Unlock Vital Gas Exchange Secrets In Animals!
Unlocking Mammalian Lung Adaptations
Optimize Lung Health: Understanding Ventilation
Unlock the Secrets of Lung Volumes!
Unlocking Leaf Adaptations: Gas & Water Mastery
Explore Leaf Tissue Distribution!
Unlock the Secrets of Leaf Transpiration!
Unlocking Stomatal Density Secrets!
Unlocking Hemoglobin's Oxygen Secrets
Unlock the Bohr Shift Optimize Oxygen Release!
Unlock Oxygen-Hemoglobin Secrets!
Unlock Capillary Secrets Optimize Material Exchange!
Explore Artery & Vein Structures!
Understanding Artery Adaptations & Blood Transport
Uncover Heart Health Measure Your Pulse Rate!
Explore Vein Adaptations Heartward Blood Journey!
Unlock the Secrets of Coronary Artery Occlusion!
Unlocking Transpiration: Roots to Leaves Journey!
Explore Xylem Vessel Adaptations in Plants!
Uncover Dicot Stem Structures!
Uncover Dicotyledonous Root Structures!
Unlocking Capillary Secrets Plasma & Tissue Fluids!
Unlock Tissue Fluid Secrets Substance Exchange
Unlock the Secrets of Lymphatic Drainage!
Unlocking Circulation Secrets: Fish vs Mammals
Unlocking Mammalian Heart Secrets
Unlock The Secrets Of The Cardiac Cycle!
Unlocking Secrets: How Root Pressure Powers Plant Life
Unlocking Plant Vitality: Phloem’s Role in Sap Translocation
Unveiling Secrets Adaptations For Movement In Organisms
Unlocking Muscle Mysteries Sliding Filament Model!
Unlocking Muscle Relaxation Titin & Antagonistic Roles
Unlocking Motor Units in Muscles!
Unlocking Skeletons Anchors & Levers of Movement
Unlock the Secrets of Synovial Joints!
Unlocking Joint Flexibility: How Stretching Impacts Movement
Discover The Magic Of Intercostal Muscles In Breath & Movement!
Unlocking Animal Motives: The Intriguing Reasons for Locomotion
Marine Mammals' Evolution: How They Mastered Swimming Adaptations
Understanding Habitats Where Life Thrives in Nature
Unveiling Nature's Secrets: How Organisms Thrive In Extreme Habitats
Unveiling Abiotic Factors: Keys To Species Distribution Globally
Understanding Tolerance Ranges in Species: A Deep Dive
Essential Conditions For Vibrant Coral Reef Formation
Unlocking Biome Distribution: How Abiotic Factors Rule
Unlocking Biomes Ecosystems' Secrets Through Convergent Evolution
Adaptations Thriving In Hot Deserts & Lush Rainforests
Unlocking Ecological Niches: The Unique Role In Ecosystems
Key Differences Obligate Anaerobes, Facultative Anaerobes & Obligate Aerobes
Unlocking Photosynthesis: Plants, Algae & Prokaryotes' Power Source
Holozoic Nutrition How Animals Process Their Food
Unlocking Protists Mixotrophic Nutrition's Dual Power
Unlocking Secrets Saprotrophic Nutrition & Marine Food Webs
Unlocking The Nutritional Secrets Of Archaea A Deep Dive
Dentition's Clues Decoding Diet in the Hominidae Family
Unique Adaptations How Herbivores And Plants Co-Evolve
Predator Vs. Prey Adaptations for Survival Unveiled
Unlocking Plants' Ingenious Tactics for Light Harvesting
Unraveling Fundamental Vs. Realized Niches Nature's Balancing Act
Unveiling Niche Battles T. Castaneum Vs. T. Confusum Experiments
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme B - Form & Function
Biology SL
Biology SL

Theme B - Form & Function

Marine Mammals' Evolution: How They Mastered Swimming Adaptations

Word Count Emoji
425 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Dive into the deep blue - marine mammals & their swimming prowess 🐬

Hey there future marine biologist! 🌊 Get ready to plunge into the world of marine mammals and discover the incredible adaptations they've made over 50 million years. That's right, their ancestors once lived on land!

The big picture

  • 🌍 Original habitat: Terrestrial (on land)
  • Evolutionary shift: About 50 million years ago
  • 🌊 New home: In the dense and viscous waters

Fun Fact: Water is roughly 1,000 times denser than air. Imagine trying to dance in honey instead of air - that's how challenging swimming could have been for these creatures!

The need for speed - streamlining 🚀

Being streamlined means being shaped to cut through water with the least resistance, like a torpedo!

  • Body Design: Widest at the front, tapering towards the back. 🐟 This shape means less drag.

  • Cool Features

    • Flippers, flukes, and dorsal fin: These have a long teardrop profile, which further reduces drag.
    • Smooth surface: Blubber is evenly spread with no hind limbs or ear flaps in sight. Plus, most of them ditched their hair! No hairy situations here, just less friction. 💁‍♂️

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IB Resources
Theme B - Form & Function
Biology SL
Biology SL

Theme B - Form & Function

Marine Mammals' Evolution: How They Mastered Swimming Adaptations

Word Count Emoji
425 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Dive into the deep blue - marine mammals & their swimming prowess 🐬

Hey there future marine biologist! 🌊 Get ready to plunge into the world of marine mammals and discover the incredible adaptations they've made over 50 million years. That's right, their ancestors once lived on land!

The big picture

  • 🌍 Original habitat: Terrestrial (on land)
  • Evolutionary shift: About 50 million years ago
  • 🌊 New home: In the dense and viscous waters

Fun Fact: Water is roughly 1,000 times denser than air. Imagine trying to dance in honey instead of air - that's how challenging swimming could have been for these creatures!

The need for speed - streamlining 🚀

Being streamlined means being shaped to cut through water with the least resistance, like a torpedo!

  • Body Design: Widest at the front, tapering towards the back. 🐟 This shape means less drag.

  • Cool Features

    • Flippers, flukes, and dorsal fin: These have a long teardrop profile, which further reduces drag.
    • Smooth surface: Blubber is evenly spread with no hind limbs or ear flaps in sight. Plus, most of them ditched their hair! No hairy situations here, just less friction. 💁‍♂️

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology SL. Subscribe now and get closer to that 45 🌟

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