These factors are the ones that are NOT being tested in a scientific experiment.
What are controls?
100
This part of a cell controls the materials that can enter and leave the cell.
What is the cell membrane?
100
This structure in a cell controls the normal activities of the cell and contains DNA.
What is the nucleus?
100
This is the process in which plants use carbon dioxide, water and sun's energy to make food.
What is photosynthesis?
200
The simplest level at which life may exist.
What is a cell?
200
A proposed explanation made on the basis of limited evidence as a starting point for further investigation.
What is a hypothesis?
200
This term refers to the cell membrane's ability to allow some things to enter or leave the cell while keeping other things outside or inside the cell.
What is selectively permeable?
200
This green pigment is responsible for trapping sunlight to make sugars (food) in a process called photosynthesis.
What is chlorophyll?
200
Another name for the type of sugar that plants make.
What is glucose?
300
A type of organism that is composed of just one cell.
What is a unicellular organism?
300
This type of data is measured in numbers. (quantitative or qualitative)
What is quantitative data?
300
The state in which molecules move from one area into another until the relative number of these molecules is equal in the two areas.
What is equilibrium?
300
This structure gives support and shape to plant and bacterial cells.
What is the cell wall?
300
This is the process by which cells use oxygen to break down food. (It is not to be confused with how we breath.)
What is respiration?
400
This term refers to the changes that take place during the life of an organism.
What is development?
400
This is a broad and comprehensive statement of what is thought to be true. It is supported by considerable evidence and ties together related hypotheses.
What is a theory?
400
The diffusion of water through a cell membrane.
What is osmosis?
400
This jelly-like structure in cells provide a medium for chemical reactions to take place.
What is the cytoplasm?
400
This is a process we can use to break down food when oxygen is not available. It can result in byproducts like lactic acid and CO2.
What is fermentation?
500
These types of organisms use energy from the sun to make their own food.
What are autotrophs?
500
The dependent variable goes on this axis of a graph.
What is the y-axis?
500
The random movement of molecules from an area where there is relatively more of them (high concentration) to an area where there is relatively few of them (low concentration).
What is diffusion?
500
This structure in a cell resembles flattened sacs. It receives and modifies proteins that are made in the endoplasmic reticulum. It is analogous to a shipping center.
What is the golgi bodies?
500
During the process of photosynthesis, glucose is produced and what gaseous byproduct?