The portion of the molecule in box 5 of Figure 12-1 is: a hydrogen bond. a pyrimidine. a nucleotide a phosphate.

The final product of DNA replication is: DNA fragments. mRNA, tRNA, and rRNA molecules. two DNA molecules, each of which contains one new and one old DNA strand. the enzymes needed for further processes, such as DNA polymerase

Which of the following cause the unwinding of the DNA double helix? Primosome DNA helicase RNA primer RNA polymerase DNA polymerase

A replication fork: is a site where one DNA strand serves as a template, but the other strand is not replicated. is created by the action of the enzyme RNA polymerase. is only seen in prokaryotic chromosomes. is a Y-shaped structure where both DNA strands are replicated simultaneously.

Which of the following adds new nucleotides to a growing DNA chain? DNA polymerase Primase RNA polymerase DNA helicase RNA primer

Why does DNA synthesis only proceed in the 5' to 3' direction? Because that is the direction in which the two strands of DNA unzip. Because that is the only direction that the polymerase can be oriented. Because the chromosomes are always aligned in the 5'to 3'direction in the nucleus. Because the 3'end of the polynucleotide molecule is more electronegative than the 5'end. Because DNA polymerases can only add nucleotides to the 3'end of a polynucleotide strand.

The 5' end of each Okazaki fragment begins with: a DNA primer binding to the template DNA. a separate RNA primer. the same RNA primer that began synthesis on the leading strand. a small DNA primer. DNA polymerase binding to the template DNA.

The DNA strand that is replicated smoothly and continuously is called the: primary strand. first strand. leading strand. alpha strand. lagging strand

Okazaki fragments are joined together by: DNA polymerase. DNA ligase RNA ligase. primase. RNA polymerase.

What is the rounded hourglass-shaped globule? Helicase Nitrogen base Ribosome DNA

According to Chargaff’s rule the following proportion exists in DNA G=C G>C G<C C=T

If one side of the DNA strand is GTAATC, the other side will be this ACGGCT CATTAG GGGCCC

The nitrogen bases of the DNA molecule are held together by these Covalent bonds Phosphodiester bonds Hydrogen bonds Glue

DNA is described as a double helix. Why? A. It is made of two strands of RNA. B. It has two complimentary strands that are coiled in a spiral. C. Every part of DNA has a matching part on another chromosome. D. It can replicate itself and made an identical copy.

What term describes the phosphate, sugar, and nitrogenous base groups that make up DNA? A. RNA B. thymine C. nucleotide D. pyrimidine

The process of copying a gene's DNA sequence into a sequence of RNA is called Replication Transcription Translation PCR

The transcribing enzyme is Ligase DNA polymerase RNA polymerase amino-acyl transferase

Which molecule contains the genetic code? RNA DNA mRNA tRNA

Transcription occurs along a ____ template forming an mRNA in the ____ direction. 5' to 3'; 5' to 3‘ 5' to 3'; 3' to 5‘ 3' to 5'; 5' to 3‘ 3' to 5'; 3' to 5'

RNA contains which bases? adenine, thymine, guanine, cytosine, uracil adenine, thymine, guanine, cytosine thymine, guanine, cytosine, uracil adenine, guanine, cytosine, uracil

Which mode of information transfer usually does not occur? DNA to DNA DNA to RNA DNA to protein all occur in a working cell

A DNA strand with the sequence AACGTAACG is transcribed A DNA strand with the sequence AACGTAACG is transcribed. What is the sequence of the mRNA molecule synthesized? AACGTAACG UUGCAUUGC AACGUAACG TTGCATTGC

Which of the following features is common to both DNA replication and transcription? Nucleotides are added to the 3' end of the newly synthesized strand Deoxyribonucleotides are incorporated into the growing sequence Both RNA and DNA polymerase require oligonucleotide priming Both RNA and DNA polymerase initiate at promoter sequences

The process of producing an amino acid polymer (polypeptide) from a RNA template is called __. replication transcription translation duplication

Each amino acid in a protein is specified by several genes. a promoter. an mRNA molecule. a codon.

When mRNA leaves the cell's nucleus, it next becomes associated with proteins. a ribosome. tRNA. RNA polymerase.

hydrophobic and hydrophilic Considering the structure of double stranded DNA, what kinds of bonds hold one complementary strand to the other? ionic covalent Van der Waals hydrogen hydrophobic and hydrophilic

Insertion Translocation Point inversion What type of mutation is in the following DNA sequence? original: ATCGATCGCGAT mutated: ATCGAACGCGAT Insertion Translocation Point inversion

In DNA guanine always pairs with Adenine Thymine Cytosine Uracil

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