Tiny, thin-walled blood vessels where gas exchange and nutrient exchange happen between the blood and tissues.

The liquid in your body that carries oxygen, nutrients, and waste. It is made up of plasma, red blood cells, white blood cells, and platelets.

The liquid part of blood that carries nutrients and other substances.

Blood cells that carry oxygen using a protein called hemoglobin.

Blood cells that fight infections and diseases.

Small parts of cells that help blood to clot when you get a cut.

A disease where plaque builds up in arteries, making it hard for blood to flow.

A tube that carries air from the throat to the lungs. It is also called the windpipe.

The main organs of the respiratory system that allow gas exchange.

A large muscle below the lungs that helps you breathe. When it contracts, air comes into the lungs.

The process of taking in oxygen and getting rid of carbon dioxide.

Tiny air sacs in the lungs where gas exchange happens.

The inside of your nose, which warms, filters, and moistens the air you breathe.

A type of bond where atoms share electrons.

The force that keeps plant cells rigid, caused by the cell wall and vacuoles.

Thin sheets of cells that cover surfaces and line internal organs. Its function is to protect the body and absorb things like food.

A broad category of tissues that are held together by a liquid, solid, or gel substance called a matrix. They provide support, protection, and transport things throughout the body.

Bundles of long cells that can shorten or contract to cause movement.

Long, thin cells that can conduct electrical signals. They are used for sensing the environment and transmitting signals to the brain.

A vascular tissue in plants that transports water and minerals up from the roots.

A vascular tissue in plants that transports water and sugar.

The process of taking in nutrients from digested food.

The process of getting rid of waste from the body.

The physical process of breaking down food into smaller pieces, such as by chewing.

The use of chemicals, like acids and enzymes, to break down food.

Special molecules that help chemical reactions break down food into smaller molecules.

A ball of crushed food mixed with saliva that is swallowed and travels down the esophagus.

The contractions of smooth muscles in the digestive tract that push food along.

Muscles that act like valves to prevent food from moving backward in the digestive tract.

Tiny, finger-like structures in the small intestine that increase the surface area for absorbing nutrients.

Even smaller, tiny structures on top of the villi that further help with nutrient absorption.

A substance made by the liver that primarily breaks down fats and oils.

The mixture of food and digestive juices that moves from the stomach to the small intestine.

The smallest units of matter. Everything in the universe is made of atoms.

Combinations of atoms that have their own structures and properties.

Small structures within a cell that carry out various jobs.

The smallest structures that are considered 'living'. Some organisms have only one cell, while others have many.

Groups of specialized cells that perform similar jobs.

Different tissues that work together to carry out a larger job in the body.

When various organs work together to perform a specific task.

A complex, living thing made up of multiple organ systems working together.

The life of a cell, which includes growing and dividing.

The stage where a cell spends most of its life, preparing to divide by growing and copying its DNA and organelles.

The process where a cell's nucleus divides into two new nuclei.

Biology Concepts Flashcards Flashcards

Student preview

71 questions

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1.

FLASHCARD QUESTION

Front

Digestion

Back

The process of breaking down food.

2.

FLASHCARD QUESTION

Front

Ingestion

Back

The process of taking food into the body, like through the mouth.

3.

FLASHCARD QUESTION

Front

Circulatory System

Back

The body system that moves blood around the body. It includes the heart, blood vessels, and blood.

4.

FLASHCARD QUESTION

Front

Heart

Back

The organ that pumps blood throughout the body.

5.

FLASHCARD QUESTION

Front

Blood Vessels

Back

Tubes that carry blood. There are three types: arteries, veins, and capillaries.

6.

FLASHCARD QUESTION

Front

Arteries

Back

Blood vessels that carry blood away from the heart. They have thick walls to handle high pressure.

7.

FLASHCARD QUESTION

Front

Veins

Back

Blood vessels that carry blood towards the heart.

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