Download Prentice Online Activity 11

Prentice Online Activity 11.4:
A gene provides the information for making a specific protein
NAME ____________________________
1. DNA codes for a specific __________________
2. Name the stomach protein being produced here: _______________________
3. What enzyme is #2 converted into?: __________________
4. What organic molecule does #3 break down?: ________________________
5. List the molecules or terms for protein synthesis once you have gone through the
ENTIRE activity:
a. DNA
b.
c.
6. Where is the code for making a protein stored?
7. What is the name of the process occurring in the nucleus, converting DNA’s
nucleotide sequence to a single stranded mRNA?
8. What is the name of the process that reads the code at the ribosome an d makes
proteins by linking amino acids?
9. Salivary amylase is a protein (enzyme) essential for digestion of starch into sugar. In
which cells is the information in DNA transcribed and translated?
Prentice Online Activity 11.5:
There are Two Main Steps from Gene to Protein
1. Name the enzyme of transcription.
2. The bases of DNA are ______________________________________________
3. The bases of RNA are ______________________________________________
4. What is the location of transcription?
5. There are two regions of the RNA, the ________________ and the _______________
6. Describe what you see happening to the introns.
7. Which part of mRNA is needed to make a protein- the exons or introns?
8. The mRNA is made in the ______________ and then it moves to the
____________________________
9. What is translation?
10. What is a codon?
11. How many nitrogenous bases code for ONE amino acid?
12. Name the 4 bases of mRNA (or RNA in general)
13. Practice using the table; this is an mRNA table.
14. Transfer RNA always has ____________ (#) bases on it. This is called an
________________________________ (to mRNA’s codon).
15. Why are there 64 possible codons or anticodons? (Hint: DNA and RNA each have 4
bases possible and the code is always read in 3’s)
16. How many nucleotides make up a section of mRNA molecule that codes for a
protein of:
100 Amino Acids
40 Amino Acids
17 Amino Acids
17. mRNa travels from the __________________ where it is made to the
__________________ which is known as the “protein factory”.
18. Predict the sequence of the polypeptide and then check your answer.
19. Place the following events in order by their number:
1. The complete polypeptide (protein) is freed from the ribosome.
2. The small subunit of the ribosome attaches to the mRNA.
3. The ribosome moves down the mRNA codon by codon.
4. The larger subunit of the ribosome binds to the small subunit and then mRNA.
5. The stop codon on the mRNA is reached.
20. To build a protein, each of the following events must occur. In which events do you
think the ribosome might take part? Write the numbers here: __________________
1. Make mRNA
2. Attach amino acids to tRNA
3. Find the start codon on mRNA
4. Test whether a tRNA matches the codon in the A site
5. Link a new amino acid to the end of a growing protein molecule
6. Recognize the stop codon.