Question 1 2 pts What actually happens to DNA before or as it is replicated/copi

Question

Question 1 2 pts What actually happens to DNA before or as it is replicated/copied? It must unwind. It must unwind and be copied first Enzymes attach to the DNA and unwind the molecule and nucleotides pair up, A with T and G with C Enzymes attach to the DNA and cut it into pieces that can be replicated. Nucleotides pair up, A with C and G with T.

Question Question 2 2 pts How many base pairs (of DNA) do human chromosomes contain? Hundreds of base pairs thousands of base pairs millions of base pairs Three billion base pairs Six billion base pairs

Question 3 2 pts Messenger RNA (mRNA) is transcribed from a section of DNA and the process is called transcription. True False

Question 4 2 pts The process of transcription occurs in the nucleus of the eukaryotic cell and translation occurs on ribosomes outside of the nucleus. True False

Question 5 2 pts When the messenger RNA is outside of the nucleus on the ribosome, anti-codons attach to it (the codons) and the process of translation occurs. True False

Flag this Question Question 6 2 pts The mRNA bases that are found in sets of three are called codons and their complimentary structures (attached to tRNA) are called anti-codons. True

Question 7 2 pts During protein synthesis (translation) the anti-codons on tRNA are carriers of ___________ to complete the process of protein syntheis and they align with the codons on the mRNA. DNA RNA sugars amino acids

Question 8 2 pts What are the intermediate products of protein synthesis? In other words what products are linked together to form chains of proteins? carbohydrates nucleotides amino acids lipids

Question 9 2 pts To what length will the protein continue to grow? When will it stop? It will grow forever in length and never stop It will stop growing when it is 4 to 6 inches in length and reaches the end The protein will grow until it is too long to fit in the cell and then stop The protein can be 100 to 10,000 amino acids long and stops when it reaches a stop codon.

Question 10 2 pts Your body makes protein for hair and nails and cell membranes etc. through the process of protein synthesis which includes transcription and translation and requires at least a nucleus, ribosomes, codons, anti-codons. True False

Question 11 5 pts Which of the following is/are NOT a step/s in the process of DNA replication (synthesis)? Mark the step/s you think do/does not belong. DNA replication proceeds in only one direction at a time on one strand at a time. DNA replication ensures that all body cells carry the same genetic information (with the exception of mutations) DNA replication occurs at many sites simultaneously DNA replication requires DNA polymerase enzymes. DNA replication results in a RNA copy of the DNA.

Question 12 5 pts Transcription is the process of mRNA making a complimentary copy of DNA. This happens in the cytoplasm of the eukaryotic cell before protein synthesis can occur. True False

Question 13 5 pts Translation is the process of tRNA making a complimentary strand for mRNA which occurs on the ribosomes bringing codons and anticodons together. The amino acids form into a polypeptide (protein). True False

Explanation / Answer

1.Enzymes attach to the DNA and unwind the molecule and nucleotides pair up, A with T and G with C

2.Three billion base pairs

3.True

4.True

5.True

6.True

7.aminoacids

8.aminoacids

9.The protein can be 100 to 10,000 amino acids long and stops when it reaches a stop codon.

10.True

11.Wrong statements are:

12.False

Reason:Transcription is the process of formation of mRNA from DNA.

13.False

Reason: Translation means the codon sequence in mRNA is translated to aminoacid sequence of proteins.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.