Biopolymers, structure and function of proteins and nucleic acids - One Line Questions

1. The term 'biopolymer' refers to: — A polymer produced by living organisms
2. Which nitrogenous base is found in RNA but not typically in DNA? — Uracil
3. In DNA, Cytosine always pairs with: — Guanine
4. Which nitrogenous bases are found in DNA? — Adenine, Guanine, Cytosine, Thymine
5. The phosphodiester bond links: — Adjacent nucleotides
6. Nucleic acids are polymers of which monomers? — Nucleotides
7. What are the building blocks of nucleic acids? — Nucleotides
8. Enzymes are typically which type of biomolecule? — Proteins
9. What is the role of transfer RNA (tRNA)? — Carrying amino acids to the ribosome
10. A segment of DNA that codes for a functional product (like a protein or RNA molecule) is called a: — Gene
11. Which of the following is a common cause of protein denaturation? — Exposure to extreme pH or high temperatures
12. Which of the following is a purine base found in nucleic acids? — Guanine
13. In RNA, the sugar component is: — Ribose
14. Which of the following is NOT a component of a DNA nucleotide? — Uracil
15. What is the function of hemoglobin in the blood? — Transport of oxygen
16. What is the primary role of DNA in cells? — Store and transmit genetic information
17. What is the primary function of proteins in biological systems? — Catalysis of biochemical reactions and structural support
18. The genetic code is read in triplets of nucleotides called: — Codons
19. Which amino acid is unique because it contains a sulfur atom in its side chain and can form disulfide bonds? — Cysteine
20. The two strands of DNA are held together by hydrogen bonds between complementary bases. Adenine pairs with: — Thymine
21. What is the term for a protein that acts as a biological catalyst? — Enzyme
22. Which type of bond links amino acids together in a polypeptide chain? — Peptide bond
23. Which amino acid is known for its cyclic side chain and often introduces kinks in polypeptide chains? — Proline
24. RNA plays a crucial role in: — Protein synthesis
25. Collagen is a protein that provides structural support to: — Connective tissues like skin and bone
26. Which part of a nucleotide forms the 'backbone' of a nucleic acid strand? — Phosphate groups and pentose sugars
27. The structure of DNA is typically a double helix, with the two strands running in opposite directions. This is known as: — Antiparallel orientation
28. Which type of bond maintains the secondary structure of proteins, such as alpha-helices and beta-sheets? — Hydrogen bonds
29. A nucleotide consists of three components: a pentose sugar, a nitrogenous base, and a: — Phosphate group
30. What type of bond connects the nitrogenous base to the pentose sugar in a nucleotide? — Glycosidic bond
31. Polymers of amino acids are known as: — Polypeptides
32. Alpha-helices and beta-pleated sheets are common examples of which level of protein structure? — Secondary structure
33. The overall three-dimensional shape of a single polypeptide chain is referred to as its: — Tertiary structure
34. Which level of protein structure involves the arrangement of multiple polypeptide subunits? — Quaternary structure
35. Denaturation of a protein involves the loss of its: — Secondary, tertiary, and quaternary structures
36. What is the primary function of DNA? — Storage of genetic information
37. The process of synthesizing RNA from a DNA template is called: — Transcription
38. The genetic material of most organisms is: — Deoxyribonucleic acid (DNA)
39. In DNA, the sugar component is: — Deoxyribose
40. The sequence of amino acids in a polypeptide chain determines its: — Primary structure
41. Disulfide bonds, which help stabilize tertiary and quaternary protein structures, are formed between two molecules of: — Cysteine
42. The process of DNA replication involves: — Synthesis of new DNA molecules from existing DNA templates
43. Ribosomal RNA (rRNA) is a major component of: — Ribosomes
44. The active site of an enzyme is where: — Substrates bind and catalysis occurs
45. Which of the following best describes the tertiary structure of a protein? — The overall three-dimensional shape of a single polypeptide chain
46. The process by which a protein folds into its functional three-dimensional shape is called: — Folding
47. The process of synthesizing a protein from an mRNA template is called: — Translation
48. Which type of RNA carries the genetic code from DNA to the ribosome? — Messenger RNA (mRNA)
49. Which of the following is NOT a function of proteins? — Information storage
50. What is the complementary codon for the mRNA sequence AUG? — UAC
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