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BIO Unit 2

QuestionAnswer
Protons positive charge, in the nucleus
Neutrons neutral charge, in the nucleus, so protons will repel when too close to electrons
Electrons negative charge, in the cloud
Finding Protons the number of protons is the atomic number
Finding Neutrons Mass number minus the atomic number
Finding Electrons The number of electrons equals the number of protons
Finding Atomic Mass protons plus neutrons
Covalent Bond a type of chemical bond formed when two nonmetal atoms share one or more pairs of electrons
Ionic Bond a type of chemical bond formed through the electrostatic attraction between oppositely charged ions created by the complete transfer of electrons from a metal to a nonmetal
Hydrogen Bond A hydrogen bond is a strong type of dipole-dipole attraction between a partially positive hydrogen atom attached to a highly electronegative atom (like nitrogen, oxygen, or fluorine) and another nearby electronegative atom
Adhesion the U shape when you put water into a graduated cylinder
Water polar, its shape makes it polar, the electrons sit around oxygen
Solvent water, something that dissolves another substance
Solute sugar, the substance that gets dissolved to create a solution
Monomer small molecule that can join together with other similar molecules to form a larger chain
Polymer a large molecule made of many smaller, repeating units called monomers bonded together in long chains
Number of electrons in a single bond 2
Number of electrons in a double bond 4
Number of electrons in a triple bond 6
A modified nucleotide that is used as an energy molecule ATP
Healthy Fats go to Phospholipid bilayer, which is made out of healthy fats
Saturated Fat a type of dietary fat with single bonds between carbon atoms that are typically solid at room temperature
Unsaturated Fat a healthy dietary fat that remains liquid at room temperature because it contains one or more double chemical bonds
Carbohydrate A molecule made of sugars that is one of the body’s main sources of quick energy. Examples include glucose, starch, and glycogen.
Protein A molecule made of amino acids. Proteins help build and repair tissues and can act as enzymes and hormones.
Lipid A group of molecules that includes fats and oils. Lipids store long-term energy, protect organs, and are important parts of cell membranes.
Nucleic acid A molecule that stores and passes on genetic information. DNA and RNA are nucleic acids.
Glycerol A small molecule that forms the backbone of fats (triglycerides). It attaches to fatty acids.
Unsaturated triglyceride A fat contains one or more double bonds in its fatty acid chains. It is usually liquid at room temperature, like many plant oils.
Saturated triglyceride A fat with no double bonds in its fatty acid chains. It is often solid at room temperature, like butter.
Nucleotide The building block of DNA and RNA. It contains a sugar, phosphate group, and nitrogen-containing base.
Carboxyl A functional group written as –COOH. It is found in fatty acids and amino acids and can act as an acid.
Hydroxyl A functional group written as –OH. It is found in molecules such as sugars and alcohols.
Phosphate A functional group containing phosphorus and oxygen. It is important in DNA, RNA, ATP, and energy transfer.
ATP The cell’s main energy-carrying molecule. Cells use ATP to power many activities.
Amino A functional group written as –NH₂. It is one of the important parts of an amino acid.
Dehydration Synthesis A reaction that joins smaller molecules together to make a larger molecule by removing water.
Hydrolysis A reaction that breaks a larger molecule into smaller molecules by adding water.
Carbohydrate Storage Molecules Starch, Cellulose, Glycogen
Created by: user-1992993
 

 



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