CHE 444: Introduction to Polymer Engineering - Naturally Occurring Polymers

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Which compound naturally occurs in the lung, liver, and arterial walls of mammals?

Arabinogalactans

Hyaluronic Acid (correct)

Chondroitin Sulfate

Agarose

Where are Arabinogalactans found in mammals?

Gums and carrageenans

Starch-like chemicals

Bone, skin, and cartilage (correct)

Lung, liver, and arterial walls

Which structure is characteristic of globular proteins?

Primary Structure

Quaternary Structure

Tertiary Structure (correct)

Secondary Structure

What is the basic unit of proteins composed of amino acids?

Polypeptides Signup and view all the answers

Which compound is used as a food thickening and emulsion stabilizer?

Agar Signup and view all the answers

In proteins, which end has the N-terminus to the left and the C-O terminus to the right?

Right end Signup and view all the answers

Which of the following is a naturally occurring polymer presented in the text?

Dextrans Signup and view all the answers

In polymer engineering, what do we call small molecules that can chemically bond to form long chains?

Monomers Signup and view all the answers

Which of the following is not a naturally occurring polymer discussed in the presentation?

Polycarbonate Signup and view all the answers

What is the primary structure discussed in relation to proteins?

Secondary Structure Signup and view all the answers

Which of the following is an example of a fibrous protein mentioned in the text?

Elastin Signup and view all the answers

What process involves the dissolving and precipitation of cellulose according to the text?

Hydrolysis Signup and view all the answers

Who discovered cellulose?

Anselme Payen Signup and view all the answers

Which industry uses cellulose as a thickener and emulsifier?

Food Industry Signup and view all the answers

What is the building block for many carbohydrate polymers?

Glucose Signup and view all the answers

What is the average degree of polymerization (DP) range of cellulose?

3500-36000 Signup and view all the answers

Which representation is used to show the cyclic form of glucose?

Boeseken-Haworth Signup and view all the answers

Which industry was paper invented for?

Paper and Pulp Industry Signup and view all the answers

What is the aim of genetic engineering?

To introduce desirable traits into an organism's genetic material Signup and view all the answers

What is the process of gene splicing?

Inserting genes into the genome of a different organism Signup and view all the answers

What is the main use of Recombinant DNA technology in dairy cows?

Increased milk production Signup and view all the answers

What is the purpose of DNA profiling?

Obtaining a specific DNA pattern for identification purposes Signup and view all the answers

What are RFLP enzymes used for in genetics?

To analyze genetic variation by examining DNA fragments Signup and view all the answers

What is the main use of asphalt as mentioned in the text?

Binder for rock aggregates and roof shingles Signup and view all the answers

What is the primary structure of proteins based on?

Amino acid sequence Signup and view all the answers

In which type of protein structure does hydrogen bonding occur within a single strand?

Alpha keratin Signup and view all the answers

Which type of proteins have a roughly spherical shape with a combination of alpha helices and beta sheets?

Globular proteins Signup and view all the answers

What is the function of fibrous proteins in the body?

Structural support Signup and view all the answers

What is the major function of DNA in a cell?

Stores genetic information Signup and view all the answers

What is the most stable form of Nucleic acids?

DNA Signup and view all the answers

What are Synthetic Elastomers composed of?

"Synthetic Rubber" Signup and view all the answers

'Natural Rubber' is composed of which form of Polyisoprene?

"cis-1,4-Polyisoprene" Signup and view all the answers

'Deoxyribonucleic Acid (DNA)' is more stable than RNA due to its:

"Double-stranded Helix structure" Signup and view all the answers

What is the major function of Fibrous Proteins?

Structural Support Signup and view all the answers