Chemical Components of the Cell Flashcards
Amino Acids forms what?
Proteins
Nucleotides that contains riboses are called what?
Ribonucleotides (RNA)
What is the pH scale of water?
7 (Neutral)
Nucleotides are the building block for what?
Nucleic Acids
Hydrophobic Force
Generated by pushing nonpolar surfaces out of the hydrogen- bonded water network
Each polymer adds a monomer through ________ which a water molecule is lost for each monomer added
Condensation
Lipids
Molecules that are insoluble in water but soluble in fat & organic solvents
Bases
Molecules that accept protons when dissolved in water
Hydrophobic
Water fearing, have no hydorgens bonds & doesnt dissolve in water
Nucleotides forms what?
Nucleic Acids
Cells are mostly concerned with what type of bases?
Weak bases
Where are fatty acid tails formed?
In the cell membrane
The bonds created by the ______ can be broken down by the revserse process _______
Condensatin, Hydrolysis
If the concentration of the base is high then the concentration of the acid is _______
Lower
Buffers
Mixture of weak acids & bases that will adjust protons concentration around pH scale of 7 by releasing protons or taking protons
Condensation reaction
Synthesize larger molecules from smaller subunits & is energetically unfavorable ( during this process a water molecule is removed as a bond is formed )
A bond is formed between an -OH group on one sugar & an -OH group on another sugar by ________ in which a molecule of water is expelled as the bond is formed
Condenstation reaction
_____________ ensure that tge polymer chain adopts one particular conformation, which is determines by the linear sequence of monomers in the chain
Noncovalent interactions
Deoxyribonucleic Acids (DNA)
Based on the deoxyribose & contains the bases A,G,C, & T
The pre-fix Oligo is used to refer to molecules with what?
Molecules from 2-10 sugar polymers
Organic Molecules
Compounds that contains carbon - carbon
_______ also stablize associatitions between two macro-molecules & such associatitions allow macro-molecules to be used as building blocks for larger structures
Noncovalent bonds
What are the four major families of small organic mnolecules?
- Sugars
- Fatty Acids
- Amino Acids
- Nucleotides
Amphipathic
Molecules that have both hydrophobic & hydrophillic regions
What are the two distinct regions of fatty acid molecules?
- A long hydrocarbon chain which is hydrophobic or very reactive
- A carboxyl (-COOH) group which behaves as an acid (Carboxylic acid) in an aqueous solutions
Glysosidic Bonds
Covalent bonds that link monosaccharides to form larger carbonhydrates
Lipid bilayer
the structure that forms the basis for all cell membranes (Composed of phospholipids)
Peptide bond
The covalent bonds between two amino acids in a protein
All amino acids have optical isomers _______ & _______ but only _______ are found in proteins
Term D - & L- Forms, only L-forms are found in proteins
Fatty Acids forms what?
Fats & membrane lipids
Nucleic Acids
Long polymers in which nucleotides subunits are linked by the formation of covanlent phospodiester bonds between in phosphate group attatched to the sugar of one nucleotide & hydroxyl group on the sugar of the next nucleotide
Sugars are what?
Carbonhydrates
Triacylglyercol molecules
Are compounds made of 3 fatty acids chains convantely joined to a glycerol molecule
Acids
Substances that release protons when they dissolve in water
_________ bonds allow a macromolecule ot bind other molecules
Noncovalent Bonds
DNA & RNA are built from ______
Nucleotides
Unsaturated tails
One or more double bonds
Saturated Tails
Has no double bonds between its carbon atoms & contains max number of hydrogens
What are the two main types of nuclei Acids?
- DNA
- RNA
Ribonucleic Acids (RNA)
Based on the sugar ribose & contains A,G,C,& U
The amino group NH2 at the end of a polypetide is called what?
N-Terminus
________ bonds add up to create a strong attraction between two molecules when they are very close so that many noncovalent bonds occur between them
Noncovalent bonds
Macromolecules
Are monomers covantely connected into a chain
Nucleotides that contains deoxyribose are called what?
Deoxyribonucleotides (DNA)
Optical Isomers
Mirror image pairs of isomers
Most macromolecules are made from different set of monomers & polymer chains is assembled in a ________
Sequence
A carboxyl group (COOH) at the other end of a polypetide is called what?
C- terminus
Pyrimidines
Cytosine (C), Thymine (T), Uracil (U)
Isomers
Molecules with the same chemical formula but different structures
What are the simplest types of sugar?
Monosaccharides (Formula CH2O)n n is any positive real #)
Purines
Guanine (G), Ademine (A)
Hydrolysis Reactions
Break down larger molecules into smaller subunits & are energetically favorable ( During this process a water molecules is absorb or consumed)
Acid have a pH scale of what?
Hydrophillic
W
Amino Acids
They all posses a carboxylic acid group & amino group both attached to central alpha -carbon atom
Peptide bonds are formed by ______ that link one amino acid to the next
Condensation reaction
Bases have a pH scale of what?
Higher than 7
Cells use simple polysaccharides composed only of glucose units called ______ in animals cells & _____ in plant as long term stores of glucose held for energy production
Glycogen & Starch
Adenosine Triphosphate (ATP)
Particaptes in the transfer of energy in metabolic reactions
Inorganic Molecules
Compounds that dont contain carbon -carbon
Polypetide
Resulting chain of amino acids
Polymers
Molecules that are made of many chemical subunits that are linked end to end whose properties enable the cells & organisms to grow & reproduce
The base in polypetudes are what?
Is the nitrogen containing rings
Cells use amino acids to build what?
Proteins
Sugars form what?
Large organic molecules (Like polysaccharides, glycogen, & starch)
Smaller oligosaccharides can be covalently linked to proteins to form ______ or to lipids to form ______
Glycoproteins , Glycolipids
Proteins
Polymers made of amino acid, which are joined head to tail in a long chain that folds up into a 3-D structure that is unique to each tye of protein