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This term describes an organism's chemical reactions that build up or break down materials.
What is metabolism
An atom with the same number of protons but a different number of neutrons is called this.
What is an isotope
This is the chemical formula for water.
What is H₂O
A plant responding to sunlight is an example of this.
What is a stimulus response
This is a substance formed by chemically combining two or more elements in definite proportions.
What is a chemical compound
During this type of bond, electrons are transferred from one atom to another.
What is an ionic bond
This is an atom that has a positive or negative charge
What is an ion
Water molecules form hydrogen bonds with each other because water is this type of molecule with partial charges
What is a polar molecule
During this type of bond, electrons are shared between atoms.
What is a covalent bond
All living things share this basic characteristic.
What is being made up of cells
Organisms use this molecule to carry genetic instructions.
What is DNA
Enzymes do this to activation energy.
What is lower it
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These are the two functional groups found in amino acids.
What are an amino group and a carboxyl group
A human maintaining an internal temperature of about 98.6°F demonstrates this characteristic of life.
What is homeostasis
This is the charge of a proton.
What is positive
This is the scientific study of life.
What is Biology
A solution with a pH of 3 is described as this.
What is acidic
This refers to water sticking to itself.
What is cohesion
These help maintain homeostasis by preventing sudden changes in pH
What are buffers
This scale measures the concentration of H⁺ ions.
What is the pH scale
This is a small chemical unit that makes up a polymer.
What is a monomer
This is the energy needed to start a chemical reaction.
What is activation energy
These are the four major types of macromolecules: carbohydrates, lipids, nucleic acids, and this fourth type.
What are proteins
This is the charge of an electron
What is negative