Biology Flashcards

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Cell

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Definition: The tiny building block that makes up all living things. Example: If your body were a Lego castle, cells would be the tiny Lego bricks!

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Tissue

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Definition: A group of cells working together to do the same job. Example: Muscle tissue is made of muscle cells all working together—like a team of stretchy rubber bands!

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Organ

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Definition: A part of the body made of different tissues that does a specific job. Example: Your brain is an organ that’s like your body's computer—it controls everything!

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Organism

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Definition: Any living thing (big or small). Example: You’re an organism. So is a dog, a tree, and even a tiny bug!

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Heart Rate

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Definition: The number of times your heart beats in one minute. Example: After you sprint to the lunchroom, your heart rate goes way up—because your heart’s working overtime!

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Pulse

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Definition: The beat you feel when your heart pumps blood through your body. Example: You can feel your pulse on your wrist or neck—it’s like your heartbeat giving you a high five!

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Respiration

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Definition: The process of breathing in oxygen and breathing out carbon dioxide. Example: When you breathe in before diving into a pool, that’s respiration at work!

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Circulatory System

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Definition: The body system that moves blood, oxygen, and nutrients around your body. Example: Think of it as your body’s delivery service—your heart is the driver and your blood vessels are the roads!

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Respiratory System

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Definition: The body system that helps you breathe in oxygen and get rid of carbon dioxide. Example: This system is essential for maintaining life.

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Blood Vessel

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Definition: A tiny tube that carries blood all over your body. Example: Blood vessels are like highways for your blood — they help it zoom around delivering oxygen and picking up waste!