1. The most abundant protein found in the extracellular matrix (ECM) isA. elastinB. keratinC. collagenD. myosin2. One type of ECM component composed of both protein and carbohydrate would beA. lectinsB. proteoglycans17 C. integrinsD. claudins3. Which types of cells don't have an ECM, but rather have something else instead?A. epithelial cellsB. connective tissue cellsC. white blood cellsD. plant cells4. Which ECM component allows for elastic recoil, almost like a rubber band? mitA. keratinB. recoilinC. elastinD. collagen5. Which biologists conducted the experiment that showed that the R strain of bacteria could beconverted into the S strain through transformation?A. Griffith and colleaguesB. Hershey and colleaguesC. Avery and colleaguesD. Chase and colleaguesulA ns as beitiazacio zi smonsa sit6. The follow up to the experiments from the previous question showed that DNA was indeed the geneticmaterial. How was this done?A. Digesting the RNA from the extract of these bacteria prevented the transformation from occurring.B. Digesting the protein from the extract of these bacteria allowed the transformation to occur.C. Digesting the DNA from the extract of these bacteria allowed the transformation to occur.D. Digesting the DNA from the extract of these bacteria prevented the transformation from occurring.7. Which biologists used bacteriophage with S35 and P32 labels to show that these viruses injected theirDNA into bacteria?A. Avery and McCleodB. Hershey and ChaseC. Wilkins and FranklinD. Watson and Crick 8. The radioactive isotopesin that experiment.A. proteins, carbohydratesB. lipids, ATPC. proteins, DNAD. DNA, RNA9. Why are bacteriophages a good model system for trying to determine which macromolecule is thegenetic material?A. They are made of protein and DNA only.B. They are made of lipids only.C. They infect human as well as bacterial cells.D. They are made of protein, DNA, RNA, carbohydrates, and lipids.10. Much of our understanding of the 2nm diameter of the double helix structure of DNA came from X-raydiffraction studies conducted byA. Erwin ChargaffB. Francis CrickC. James WatsonD. Rosalind Franklin11. What was the main finding of Chargaff's experiments?A. DNA is a double helix.B. Within a few percentage points, the amounts of A = T and G = C.C. Bacteriophages infect bacteria.D. DNA has a sugar-phosphate backbone.12. What group of enzymes helps DNA change how coiled it is?A. polymerasesB. primasesC. helicasesD. topoisomerases13. What percent of a typical mammalian genome is classified as an Alu sequence?A. 5%B. 10%C. 25%D. 33%14. Roughly how many genes are in the human mitochondrial genome?A. 12B. 37C. 93D. 12488

Introduction : Collagen, enzymes, and other large macromolecules form the extracellular matrix, which gives cells their structural support. They help with the growth of organs and tissues. Extracellular matrix aids in the connection between cells and matrix and serves as a cell adhesive.Answers : Q1. The answer is collagen. In a multicellular mammal, collagen makes up around 30% of the total protein mass. The human body contains the most of this protein. The main component of your tendons and ligaments is collagen, which also supports your skin. Collagen is the substance that repairs wounds and creates scars when you injure your skin. Collagen is even present in the bones, catilages and basement membrane of blood vessles, and all the tissues. Therefore, collagen is the most abundant protein present in the ECM. Elastin has the rubber like property i e stretchability. It is responsible for the elastic recoil of the lungs and also accounts for the wrinkling of the skin. Keratin is present only in the squamous keratinised tissues like skin. Myosin is present only in the musclular tissues. As per bartleby honor code guidelines, we can answer only one question. Repost the remaining questions.