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Chapter 1
Grade 5 Life Science Cells to Body Systems
| Question | Answer |
|---|---|
| What is the basic unit of structure and function of living things? | cell |
| What is the part of the cell that directs all of the cell's activities? | nucleus |
| Which is found only in plant cells? | cell wall and chloroplast |
| What are three oraganelles found in both a plant and animal cell? | nucleus, cytoplasm, chromosomes, mitochondria, vacuoles, cell membrane |
| How are bacteria useful? | make food, digest food, and enrich soil by breaking down dead plants and animals |
| What is a group of cells that work together to perform a certain function? | tissue |
| What is a group of tissues that work together to perform a certain function? | organ |
| What is the organ system that turns food into nutrients that body cells need for energy, growth, and repair? | digestive |
| Which type of tissue forms bones, tendons, and ligaments? | connective |
| Most of your body mass is made of which type of tissue? | muscle |
| What is the liquid part of blood called? | plasma |
| Name the order of how cells form into systems, starting with the most basic of all living things. | cell, tissue, organ, organ system |
| What is the organ system- made up of the heart, blood vessels, and blood- that transports materials throughtout the body? | circulatory |
| What is the organ system, including the lungs, that exchanges oxygen and carbon dioxide between the body and the environment? | respiratory |
| What is the organ system, inclduing the bones, that protects the body and gives it structure? | skeletal |
| What is the organ system that includes the muscles and allows the body to move? | muscular |
| What is the organ system- including the brain, spinal cord, and nerves- that senses your surroundings and controls other organs? | nervous |
| Which type of muscle forms the walls of the heart? | involuntary |
| What is the path that blood takes when it flows from the heart and throughout the body? | arteries, capillaries, veins, heart |
| What are the two parts of the nervous system called? | central and peripheral |
| What is the central nervous system made up of? | brain and spinal cord |
| What is the peripheral nervous system made up of? | sensory organs like your eyes and ears |