The science that studies life

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a method of research with defined steps that include experiments and careful observation

a suggested explanation for an event, which can be tested.

an explanation of a hypothesis that has been proven true by different experiments with consistent results over time.

describe what always happens under certain conditions

a group of related disciplines that study the natural world

The smallest part of a substance that cannot be broken down chemically

a group of two or more atoms that bond together

a large molecule made up of thousands of atoms that are covalently bonded together.

carbohydrates, lipids, proteins, and nucleic acids

diatomic hydrogen (h2)

a tiny organ inside a cell that has a specific job to do

energy production, building proteins and secretions, destroying toxins, and responding to external signals.

the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body

a group of similar cells that work together to perform a specific function within an organism

Epithelial tissue, Connective tissue, Muscle tissue, and Nervous tissue

a type of tissue that covers the body, including the skin and the linings of internal passages

a type of tissue that supports and binds other tissues together, including blood, bone, and lymph tissues

a type of tissue that includes skeletal muscles that move the skeleton, and smooth muscles that surround organs like the stomach

a type of tissue that are made up of nerve cells (neurons), which carry messages throughout the body

a group of different tissues working together to perform a job inside the body

the skin