| Question |
Answer |
| what is a cell |
the building block of all living things |
| Cells |
the building blocks of living things. |
| cell membrane |
covers and protects the cell. It lets things pass into and out of the cell. This can be compared to your skin. |
| nucleus |
is the control center of the cell. It contains DNA. |
| vacuole |
acts like a stomach storing and breaking down materials. |
| mitochondria |
produces energy for the cell |
| cellular respiration |
the process by which cells get their energy. |
| How does cell respiration work |
cells take in oxygen and food (like sugar) and release carbon dioxide and water. |
| Why are cell different shapes and sizes? |
because they have different jobs to do. |
| Red blood cells |
small, smooth, flexible saucers because they need to move through blood vessels. |
| Nerve cells |
like the cells in your brain, have branch like structures so they can quickly send messages to all the parts of the body. |
| skin cells |
Flat cells that can be layered like shingles on a roof. |
| Lung Cells |
Cells with hair-like structures. The hairs help keep out dirt and bacteria. |
| tissue |
a group of cells that have the same job |
| Organs |
Tissues group together to form these. |
| Organ system |
Organs group together to form these. |
| Organism |
Organ systems form these. |
| Do Plants have tissues and organs too? |
Yes |
| A leaf |
an example of a plant organ. |
| How do cells work together to form an organism? |
Cell->tissue->organ->organ system->organism |
| organ system |
a group of organs working together to carry out life processes. |
| muscle system |
works with the skeletal system to move your body. The muscular system also works with your digestive system to help move food through the stomach and intestines. |
Science Vocab 147928
