Cell Theory
A student wants to observe the individual cells in a piece of onion skin. Which tool should they use, and why is this tool necessary?
Microscope, cells are too small to see with your eyes!
During photosynthesis, plants take in which gas from the air? What gas is released?
Carbon dioxide is taken in and Oxygen is released
This fills the space inside a cell. It is semi-fluid and is composed of water and dissolved materials, that work to hold organelles in place and move nutrients around the cell.
What is cytoplasm?
A fish lives in a pond with water, sunlight, plants, rocks, and other fish. Name TWO abiotic factors
Water, sunlight, or rocks
Plants make glucose(sugar) through photosynthesis. What process can cells use to break down that glucose(sugar) and release energy? What organelle does this process occur in?
Cellular Respiration, occurs in the mitochondria
Osmosis and diffusion occur across this organelle that is semi-permeable.
Cell Membrane
An ecosystem composed of oak trees, beetles, and different species of lizards, are all examples of what type of factors within this ecosystem?
Biotic Factors
A cut on your skin heals because existing cells divide and produce new cells. Which part of the cell theory does this demonstrate?
All cells come from existing cells.
Declan is learning about organelles in his sixth-grade science class. They are designing a research project focusing on 1 of the 6 organelles they are learning about. Declan decides to research how cells direct function and store DNA. Which organelle will Declan be researching?
The Nucleus
The human body contains many different types of cells, like muscle cells, nerve cells, and blood cells. Have multiple cells that complete specific functions make them, what type of organism?
Muscle cells work together to form muscle tissue. Muscle tissue works with other tissues to form a heart. What level of organization comes after tissue?
Organ
Henry has a condition that affects his cells’ ability to make energy. He often feels tired and has trouble exercising for long periods of time. His doctor explains that the organelles in his cells are not producing enough energy for his body to use.
Which organelle is most likely affected by Henry's condition?
The mitochondria?
Flagella and cilia are often found in bacteria. These structures are used for cell movement. How many cells do organisms with flagella and cilia have? What type of organism does this make them?
Bacteria containing flagella and cilia have 1 cell making them unicellular.
A student says, “Only animals and plants are made of cells.” Is the student correct? Use the cell theory to explain your answer.
No. All living things are made of ONE or MORE cells.
The sodium/potassium pump requires ATP to pump against the concentration gradient. This is an example of this type of transport.
What is active transport?
What two organelles do plant cells have that animal cells do not? What are the two organelles' functions?
1. Plant cells have cell walls that provide structure and support. 2. Plant cells have chloroplasts the convert sunlight, water, and carbon dioxide into sugar and oxygen.
You go outside on a very cold day. Your body begins to shiver. You go outside on a very hot day. Your body begins to sweat. What is the term that describes the internal regulation to these external factors?
Homeostasis