Molecular and Cellular Biology Flashcards
What are carbohydrates?
Made up of Carbon, Hydrogen, and Oxygen in a ratio of 1:2:1
What are monosaccharide?
A Monosaccharide is a carbohydrate that is composed of one molecule of simple sugars such as Glucose.
What are disaccharide?
A Disaccharide is a carbohydrate that is composed of two molecules of simple sugars such as Maltose.
What are polysaccharide?
A Polysaccharide is a carbohydrate that is composed of two or more molecules of simple sugars, such as Glycogen and Starch.
What are polymers?
Polymers are built via dehydration reaction and broken down by hydrolysis reactions
What are lipids ?
o Structure: 3 fatty acids attached to 1 glycerolo Function: Energy storage, insulation, and protection
What are proteins?
o Joined by peptide bonds via Dehydration Reactionso Synthesis Stages: Primary, secondary, Tertiary, and Quaternary Structures
What are the four structures of plants synthesis?
o Primary Structure: Chains of amino acidso Secondary Structure: 2 types:B sheets , Alpha helixo Tertiary structures are made up of R- groups interactions forming either Globular or Fibrous proteins.Interactions of hydrophobic and hydrophilic partso Quaternary Structure: Joining of polypeptides or proteins together
What are Simple Proteins?
They are composed only on Amino Acids
What are Albumin / GlobulinProteins?
They form carriers and enzymes
What are Scleroprotein?
Fibrous Structures i.e. Collagen
What are Conjugated Proteins?
Simple proteins + non-proteins
What are Lipoprotein?
Protein + Lipids
What are Mucoprotein?
Protein + Carbohydrates
What are Chromoprotein?
Protein + pigment
What are Metalloproteins?
Protein + Metal
What are Nucleoproteins?
Histone protamine + nucleic acids
What are Coenzyme?
Protein + non-protein ( organic/ not found in diet)
What are Cofactors?
Protein + non-protein that are nonorganicsubstances i.e. metal, Zn, Fe, or prosthetic group
What are Hormones?
Chemical Messenger
What are Enzymes?
Biological Catalyst
What are Structural Protein?
Physical Support
What are Transport Protein?
Transport
What are some characteristics of Enzymes?
o Enzymes decrease activation energyo Enzymes use substrates that interact with an active siteo Enzymes do not alter the equilibrium constanto Enzymes do not get consumed in the reactiono Enzymes are PH and Temperature sensitive
What PH environment best fits most enzymes?
o Most enzymes function best at a PH of 7.2. Few are acidic like Pepsin, which functions at a PH of 2 in the stomach. Others are basic such as Pancreatic Enzymes, which work best at a PH of 8.5 in the small intestine.
What are Competitive Inhibition?
o Competitive Inhibition: a “counterfeit” substrate,similar to the structure of the real substrate, attaches to the active site. The more of this substrate present, the more the competition. It competes with the real substrate for an interaction with the active site.
What are Noncompetitive Inhibition?
Noncompetitive Inhibition: IRREVERSIBLE: A“counterfeit” substrate forms a strong covalent bondwith the enzyme’s active site, making it nonfunctional.
What are Allosteric Inhabitation?
If a substrate attaches anywhere on the enzymebesides on the active site, the interaction is called an Allosteric Inhabitation.
What is the function of Protease?
Protease breaks proteins to Amino acids.
What is the function of Lipase?
Lipase breaks Lipids into fatty acids and glycerol.