Include in your chart, location, complementary base pairs, sugar, helix or single 19. What is the overall scheme to protein synthesis? 20. Describe the process of transcription? What is a code?
codon 3. What is the three letter base sequence on tRNA called? anticodon 4. What amino acid do proteins start with? (start codon) methionine 5.
of Glycine is 75g/mol)? 1% of Glycine = 1g/100mL 1g x (1 mol/75g) = 0.0133mol M = mol/L 0.0133mol/0.1L = 0.133M 12) Identify the amino acid in the chemical structure below, as well as the “R” group, and describe the polarity and charge characteristics. 1. Glutamic acid; carboxylic group side chain; polar negatively charged 2. Histidine; imidazole group side chain; polar positively charged 3.
Matching bases of DNA & RNA ! Double stranded DNA unzips Matching bases of DNA & RNA ! Double stranded DNA unzips T G G T A C A G C T A G T C A T CG T A C CG T T G G T A C A G C T A G T C A T CG T A C CG T Regents Biology! Regents Biology! Name: ______________________ Protein Synthesis Matching bases of DNA & RNA !
BIOL-110 Elements of Biology Assignment 1 Student Name: Part A: Multiple Choice Questions and Fill in the Blanks 1) A covalent chemical bond is one in which * c) Outer-shell electrons of two atoms are shared 2) Which of the following is not a weak molecular interaction? * a) A covalent bond 3) Polysaccharides, lipids, and proteins are similar in that they * b) Are synthesized from monomers by dehydration reactions. 4) Which of the following is a compartment that often takes up much of the volume of a plant cell? * b) Vacuole 5) The presence of cholesterol in the plasma membranes of some animals * a) Enables the membrane to stay fluid more easily when cell temperature drops 6) Which of the following types of molecules are the major structural
1) What is the primary structure of a protein? The primary structure is a linear sequence of how amino acids are arranged in a polypeptide chain. These interactions form a covalent backbone. 2) Why isn’t there free rotation around the peptide bond? Because the amino nitrogen associated within the peptide bond has a lone pair, this allows for a resonance structure to take place.
GAA b. The mRNA codon that results after this triplet code is transcribed. CUU c. The anticodon on the tRNA molecule that is complementary to the mRNA codon described above. GAA d. The amino acid that would be carried by the tRNA molecule described above. LEU 6.
The structure of these proteins is decided by the side R-group found on the combination of amino acids. Primary structure consists of a polypeptide chain of amino acids. To make a
The protein molecule is able to float in the membrane – part of it is embedded in the membrane, part of it sticks into the cytoplasm, and part of it sticks out into the aqueous environment of the cell. What do you suspect about its structure, including its amino acid sequence, to make it behave as it does? * Examine the diagram of the cell membrane below. Is the diagram a “good” illustration of the fluid mosaic model of the cell membrane? What aspects of cell membrane structure are accurately illustrated by it?
Experiment 14: Proteins and Denaturing Agents (adapted with permission of Dr. Ann Willbrand, USC-Aiken) Introduction Proteins are polymers of amino acids. A typical protein may be composed of hundreds of amino acids. The side chains of the amino acid residues may contain nonpolar, neutral polar, acidic, or basic groups. The primary structure of a protein is determined by the sequence of amino acids, but the secondary and tertiary structures of proteins define their natural or native states, which are often folded. This is called the native conformation and is usually the state in which the protein is most active and functional.