1. Which of the following are functions of proteins? a. Transporting substances b Building structures c. Making enzymes d. Protecting the body e. All of the above HOWTIME QUESTIONS (answer while viewing the video) 2. Which step of protein synthesis occurs first? a. Transcription b Translation 3. What occurs during transcription? a. DNA is sent into the cytoplasm b. DNA is transcribed into proteins c. DNA is transcribed into a message d. DNA changes form to RNA 4. Where does transcription occur? a. Cytoplasm b Nucleus c. Ribosome d. Rough Endoplasmic Reticulum 5. Which enzyme transcribes DNA to form a strand of mRNA? a. DNA Polymerase b. DNA Nuclease c. RNA Nuclease d. RNA Polymerase 6. Where does mRNA go after transcription? a.Attaches to the ribosome in the cytoplasm b. Attaches to the ribosome in the nucleus c.Attaches to the amino acid in the cytoplasm 7. What does a ribosome make and what type of RNA does it contain? a. Proteins, mRNA b. Nucleic acids, rRNA c. Proteins, rRNA 8. Which type of RNA carries an amino acid to the ribosome? a. MRNA b. IRNA c. IRNA 9. How many bases is in one codon? a. 1 b. 3 c. 5 10. Which type of RNA carries an anticodon? a. mRNA b. IRNA c. IRNA 11. What tool is used to find the amino acid will bring? a. mRNA codon chart b. tRNA codon chart c. DNA codon chart 12. What bond exists between amino ad a. Covalent bond b. Ionic bond c. Protein bond d. Peptide bond

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1. Which of the following are functions of proteins? a. Transporting substances b Building structures c. Making enzymes d. Protecting the body e. All of the above HOWTIME QUESTIONS (answer while viewing the video) 2. Which step of protein synthesis occurs first? a. Transcription b Translation 3. What occurs during transcription? a. DNA is sent into the cytoplasm b. DNA is transcribed into proteins c. DNA is transcribed into a message d. DNA changes form to RNA 4. Where does transcription occur? a. Cytoplasm b Nucleus c. Ribosome d. Rough Endoplasmic Reticulum 5. Which enzyme transcribes DNA to form a strand of mRNA? a. DNA Polymerase b. DNA Nuclease c. RNA Nuclease d. RNA Polymerase 6. Where does mRNA go after transcription? a.Attaches to the ribosome in the cytoplasm b. Attaches to the ribosome in the nucleus c.Attaches to the amino acid in the cytoplasm 7. What does a ribosome make and what type of RNA does it contain? a. Proteins, mRNA b. Nucleic acids, rRNA c. Proteins, rRNA 8. Which type of RNA carries an amino acid to the ribosome? a. MRNA b. IRNA c. IRNA 9. How many bases is in one codon? a. 1 b. 3 c. 5 10. Which type of RNA carries an anticodon? a. mRNA b. IRNA c. IRNA 11. What tool is used to find the amino acid will bring? a. mRNA codon chart b. tRNA codon chart c. DNA codon chart 12. What bond exists between amino ad a. Covalent bond b. Ionic bond c. Protein bond d. Peptide bond

Answer 1

1. **e. All of the above** Proteins have diverse roles, including transporting substances, forming structural components (like collagen), acting as enzymes (catalyzing biochemical reactions), and contributing to the body's defense mechanisms (antibodies).HOWTIME QUESTIONS:2. **a. Transcription** Transcription is the first step, where the DNA sequence is copied into messenger RNA (mRNA).3. **c. DNA is transcribed into a message** Transcription creates a complementary mRNA molecule that carries the genetic information from DNA.4. **b. Nucleus** In eukaryotic cells, transcription occurs within the nucleus where the DNA is located.5. **d. RNA Polymerase** RNA polymerase is the enzyme responsible for synthesizing the mRNA strand from the DNA template.6. **a. Attaches to the ribosome in the cytoplasm** After transcription, the mRNA molecule moves out of the nucleus and into the cytoplasm, where it binds to a ribosome.7. **c. Proteins, rRNA** Ribosomes, composed of ribosomal RNA (rRNA) and proteins, are the sites of protein synthesis.8. **c. tRNA** Transfer RNA (tRNA) molecules carry specific amino acids to the ribosome based on the mRNA codon.9. **b. 3** A codon consists of three nucleotide bases, which code for a specific amino acid.10. **c. tRNA** tRNA molecules have an anticodon, a three-base sequence that is complementary to the mRNA codon.11. **a. mRNA codon chart** An mRNA codon chart is used to determine the amino acid corresponding to a specific mRNA codon.12. **d. Peptide bond** Amino acids are linked together by peptide bonds during protein synthesis.

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