Water
This molecule carries a partially negative charge in a water molecule due to a larger presence of electrons near it.
Oxygen
This macromolecule is the body's main source of quick energy.
Carbohydrates
Carbon, hydrogen, and oxygen (C, H, O)
This is the variable that scientists intentionally change during an experiment.
Independent Variable
Information gathered using one or more of your five senses is called this.
Observation
This strong bond holds Oxygen and Hydrogen together within a water molecule.
Covalent Bond
This macromolecule provides long-term energy storage and is an important part of cell membranes
Lipids
This term describes a single building block that can bond with others to form a larger molecule.
Monomer
Dependent Variable
A good scientific research question must have these two qualities.
Testable & Measurable
This weak bond holds one water molecule to another water molecule.
Hydrogen Bond
Enzymes are usually made of this macromolecule, which helps speed up chemical reactions in cells.
This term describes a large molecule made of many smaller, repeating units bonded together.
Polymer
A student tests whether different amounts of fertilizer affect the height of bean plants. What is the independent variable?
The amount of fertilizer.
Control Group
What common saying helps us predict the cause of attractions between molecules of water.
Opposites Attract
DNA & RNA belong to this macromolecule group and are responsible for storing and transmitting genetic information.
Nucleic Acids
Water has an uneven distribution of electrical charge, giving it slightly positive and slightly negative regions. This property is called ____________.
Polarity
Students investigate whether water temperature affects how quickly sugar dissolves. They use the same amount of sugar in every trial. What is the same amount of sugar considered?
Constant Variable
When graphing experimental results, the independent variable belongs on this axis.
The x-axis
The uneven distribution of of electrical charge within a molecule which causes 1/2 of the molecule to be partially positive and the other 1/2 of the molecule will be partially negative.
Polarity
This macromolecule can help with structure, support, transport, defense, and chemical reactions in living organisms.
Proteins
This process removes a water molecule to join smaller molecules together into a larger molecule.
Dehydration Synthesis
A scientist gives plants 2, 4, 6, or 8 hours of light each day and measures their growth after two weeks. Identify the independent AND dependent variables.
Independent = hours of light. Dependent = plant growth.
A scientist records that a plant's leaves are yellow and concludes that the plant may not be receiving enough nutrients. "The leaves are yellow" would be an ________.
Observation