#AP Biology: Energy and Metabolism - The Night Before 🚀

Hey there, future AP Bio master! Let's get you feeling confident and ready to crush this exam. We're going to break down energy and metabolism into bite-sized pieces, connect the dots, and make sure you're not just memorizing, but understanding. Let's dive in!

#Energy: The Fuel of Life

#The Basics

• All living systems need a constant input of energy to power life processes like growth, repair, and reproduction. Think of it like charging your phone – without it, nothing works! 🔋
• This energy is used to maintain the internal environment of the organism.
• Most energy originates from the sun 🌞.

* Energy-producing reactions are often paired with energy-consuming reactions.

#Order, Entropy, and You

• Life requires a highly ordered system.

* Living organisms are **open systems**, exchanging matter and energy with their environment, allowing them to maintain order. * This is the **principle of energy balance**. * When energy input doesn't exceed loss, the organism can't maintain its ordered state, leading to **death**. 💀 * Organisms have evolved strategies to optimize energy efficiency (e.g., hibernation, recycling molecules).

#Energy & Metabolism

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