UNIT 2 Flashcards
What determines the properties in proteins?
The specific amino acids in a polypeptide and the order in which they are joined.
The main types of nucleic acids are…
DNA (Deoxyribonucleic acid) and RNA (ribonucleic acid)
What are Amino Acids?
Organic Compound that combines to form protein.
What is RNA?
A single strand of nucleotides with the bases Adenine, Uracil, Cytosine, and Guanine.
4 Different types of nucleotides DNA
The four types of nucleotides in DNA are Adenine, Thymine, Guanine, and Cytosine.
What’s Proteins?
Macromolecules unbranched from amino acids
What are nucleic acids?
Nucleic acids are compounds that are organic in living organisms which are responsible for passing on hereditary information.
What is produced during a dehydration reaction?
A chemical reaction between two compounds that produces water is a dehydration reaction. For example, if two reactants are combined where a hydrogen from one reactant binds to a hydroxyl group from the other reactant, it can produce a dimer and a water molecule.
DNA replication
- dna unwinds and unzips
- new nucleotides added
- 2 identical molecules result.
What is a Lipid?
A macro biomolecule that is considered a hydrophobic
What is DNA?
ultimately determines an organism’s traits and controls protein production
What is the dehydration synthesis?
Dehydration synthesis refers to the formation of larger molecules from smaller reactants, accompanied by the loss of a water molecule.
DNA
deoxyribonucleic acid. It is the carrier of genetic information.
What are Carbohydrates?
First the chemical formula is (CH2) times n where n is the number of carbons in the “carb”. Now carbohydrates is a compound of carbon, “carbo” and hydrogen and oxygen, “hydrate”. Carbs consist of 3 subtypes, monosaccharides, disaccharides, and polysaccharides.
What are the 4 things organisms’ DNA contain?
Adenine
Thymine
Guanine
Cytosine
What is the difference between purine and pyrimidine?
Purines have a two-ring structure, and pyrimidine has one ring. Purine is the bigger of the two. The Purines in DNA are Adenine and Guanine, the pyrimidines are thymine and cytosine. In RNA the purines are the same as DNA, and they pyrimidines are uracil and cytosine. Uracil is the RNA substitute for thymine
What makes up the “backbone of the DNA molecule?
The backbone of DNA is based on a repeated pattern of a sugar group and a phosphate group. The full name of DNA, deoxyribonucleic acid, gives you the name of the sugar present - deoxyribose. Deoxyribose is a modified form of another sugar called ribose.
What base is missing on RNA, and what other base replaces it?
Thymine, it is replaced by Uracil, pairs with adenine
What are Carbohydrates?
First the chemical formula is (CH2) times n where n is the number of carbons in the “carb”. Now carbohydrates is a compound of carbon, “carbo” and hydrogen and oxygen, “hydrate”.
DNA nucleotide parts
5 carbon sugar, phostphate, nitrogen base
What is the shape of the DNA?
Double-Helix
What are the four nitrogen bases of DNA?
A, T,
C, G
enzyme that adds the complementary base pairs to DNA
DNA polymerase
Why is dehydration synthesis important?
Dehydration synthesis is important because it is the process by which many organic polymers are made.
What is dehydration synthesis reaction chemical formula?
RCO2H + R′OH ⇌ RCO2R′ + H2O
Where does dehydration synthesis occur?
In biological systems, dehydration synthesis reactions occur in every cell, especially since it is important for the formation of ATP.
How is dehydration synthesis used in the body?
The monomers combine with each other using covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts.
What are the four nitrogenous bases of RNA?
Adenine, Uracil, Guanine, Cytosine
Function of rRNA
Ribosomal RNA
form an important part of both sub-units of the ribosomes; has binding sites that allow rRNA to interact with another RNA)
What are the 3 building blocks on the nucleotide?
Ribose, Phosphate Group, Nitrogenous Base
What is DNA?
Nucleic acid that is found in the in the nucleus primarily.
What is RNA?
Type of nucleic acid which forms with DNA and it functions with Ribosomes to form protein molecules.
What is replication?
Replication is the process which DNA duplicates itself and makes a new DNA molecule.
What is transcription?
Transcription is the process of making a messenger RNA from DNA
What are the different kinds of nitrogen bases in all nucleic acids?
Adenine, Thymine, Cytosine, Uracil, and Guanine
Is RNA double or single strands?
Single Strands
What does ATP stand for?
Adenosine Triphosphate
What 2 things make up DNA?
Phosphate and Sugar
What element is found in proteins that is absent in carbohydrates and lipids?
Nitrogen
What is the primary structure sequence held together by?
Peptide Bonds
What maintains secondary structure?
Hydrogen Bonds
Most of the amino acids in the cytoplasmic domain are what?
Hydrophilic
Where do you find the DNA
found in the cell’s nucleus as nuclear DNA
How is Base pairing connect to DNA
rule that describes how nucleotides form bonds in DNA; always bond with thymine, guanine, and cytosine
What is Replication
It is process by which DNA copied
What is Polypeptide
a peptide which on hydrolysis yields more than two amino acids called tripeptides
DNA Function
The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code.
Chromosome
carries DNA/genetic information
RNA Function
Converts information stored in DNA into proteins
Building Blocks of DNA
Consists of a phosphate group, a sugar group, and one of 4 types of nitrogen bases.
What kind of bond occurs when dehydration synthesis occurs?
Covalent bonds
What happens when a hydrogen and hydroxyl group are removed during dehydration synthesis?
Allows the monomers to share electrons and form a covalent bond.
What happens during dehydration synthesis?
Either the hydrogen of one monomer combines with the hydroxyl group of another monomer releasing a molecule of water, or two hydrogens from one monomer combine with one oxygen from the other monomer releasing a molecule of water.
What other type is dehydration synthesis considered?
Condensation Reaction. (the loss of water molecule)
What’s a protein 🤔
Any of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids
At which level of protein structure are interactions between the side chains (R groups) most important?
Tertiary
What would be the impact of changing one amino acid in a polypeptide consisting of 325 amino acids?
The primary and tertiary structure would be altered. Along with the biological function of the protein.
What maintains the secondary structure of a protein?
Hydrogen Bonds
Which bonds are created during the formation of the primary structure of a protein?
peptide bonds
What do the monomers that are joined through a dehydration synthesis share?
Electrons.