what can you conclude about the dna backbones in a double-stranded dna molecule course hero

What can you conclude about the DNA backbones in a double-stranded DNA molecule? Possible Answers: The two strands are antiparallel; the 5' end on one strand contains a phosphate group, whereas the 5' end on the other contains a hydroxyl group The two strands are parallel and the 5' ends on both strands contain a phosphate group

Full Answer

What are the nucleotide pairs of a double stranded strand?

What are the two strands of DNA made up of?

What are the components of the backbone of DNA?

Question: Value: 1 / DNA Structure In double-stranded DNA, the sugar-phosphate backbones are: a. on the inside of the molecule b. on the outside of the molecule c. alternating inside/outside of the molecule Value: 2 Which one of the following is LEAST likely to be found in a nucleotide? a. one or more phosphate groups b. a five-carbon.

Why are the two strands of DNA antiparallel to each other?

DNA is a double.pdf - DNA is a double-stranded molecule, whereas RNA is a single-stranded molecule. In its backbone, DNA possesses the sugar

What can you conclude about the DNA backbones in a double stranded DNA molecule?

What is the backbone structure of DNA?

Which of the following might you find in the backbone of DNA?

What does it mean for the backbones of the DNA molecule to be antiparallel?

What kind of backbone do molecules form?

Which statement is true about the structure of A double stranded DNA molecule?

What makes up the backbone of DNA What color represents the backbone?

What makes up the backbone of DNA quizlet?

Is the backbone of DNA hydrophobic?

Which conclusion about DNA replication is supported by the graph?

What is the role of DNA ligase in the elongation of the lagging strand during DNA replication?

What patterns do you see in a DNA molecule?

What is the backbone of DNA?

The backbone of a DNA molecule consists of the phosphate groups and the deoxyribose sugars, whereas the base region of the DNA molecule consists of the nitrogenous bases; therefore, the backbone of DNA is made up of phosphate groups and pentose sugars. Adenine is part of the base region of the molecule.

Which direction does the DNA backbone run?

In a DNA molecule, the two strands are organized in such a way that the DNA backbone of one strand runs in the 5'-to-3' direction, whereas the DNA backbone of the other strand runs in the 3'-to-5' direction; therefore, the two strands are antiparallel to each other.

How are DNA strands connected?

The two strands of DNA are connected by phosphodiester bonds. Explanation: The two strands of DNA are actually connected by hydrogen bonds (H-bonds) between the nitrogenous bases. There are 2 hydrogen bonds between adenine and thymine, and 3 hydrogen bonds between cytosine and guanine. All other statements are true.

What are the two main structural domains of DNA?

A DNA molecule has two primary structural domains: the DNA backbone and the DNA bases. Recall that all DNA molecules are made from nucleotides. One nucleotide of a DNA molecule consists of a phosphate group, a pentose (five-carbon) sugar called deoxyribose, and a nitrogenous base (adenine, thymine, guanine, cytosine).

What is needed to break the bonds between the phosphate group on the 3' carbon of one sugar and the

Phosphodiesterase is needed to break the bonds between the phosphate group on the 3' carbon of one sugar and hydroxyl group on the 5' carbon of the adjacent sugar

How many strands are there in DNA?

In the nucleus, DNA is always found as a double-stranded molecule. This means that one DNA molecule consists of two DNA strands. Each strand is made up of a DNA backbone (the phosphate groups and the pentose sugars) and the bases.

Which enzyme breaks the bonds between the phosphate group and the hydroxyl group?

Phosphodiesterase is needed to break the bonds between the phosphate group on the 3' carbon of one sugar and hydroxyl group on the 5' carbon of the adjacent sugar. Peptidase is needed to break the bonds between the phosphate group on the 3' carbon of one sugar and hydroxyl group on the 5' carbon of the adjacent sugar.

What would happen if two single strands were separated from each other?

C. If the two single strands were separated from each other, it would not be possible to distinguish one strand from the other.

What enzyme adds nucleotides to a template strand of DNA?

b.) In DNA replication in bacteria, the enzyme DNA polymerase III (abbreviated DNA pol III) adds nucleotides to a template strand of DNA. But DNA pol III cannot start a new strand from scratch. Instead, a primer must pair with the template strand, and DNA pol III then adds nucleotides to the primer, complementary to the template strand. Each of the four images below shows a strand of template DNA (dark blue) with an RNA primer (red) to which DNA pol III will add nucleotides.

How is cytokinesis accomplished in animal cells?

b.) Cytokinesis in animal cells is accomplished by constriction of the cell along the plane of cell division (formation of a cleavage furrow). In plant cells, which have cell walls, a completely different mechanism of cytokinesis has evolved.

How does DNA replication work?

New daughter molecules are constructed by the sequential addition of nucleotides and the formation of base pairs between the new strand and the parent (template) strand. The replication of the double helix results in two daughter molecules, each composed of one parent strand and one new strand. The enzymes that accomplish the replication of DNA are called DNA polymerases.

Where does DNA replication begin?

c.) DNA replication always begins at an origin of replication . In bacteria, there is a single origin of replication on the circular chromosome, as shown in the image here. Beginning at the origin of replication, the two parental strands (dark blue) separate, forming a replication bubble. At each end of the replication bubble is a replication fork where the parental strands are unwound and new daughter strands (light blue) are synthesized. Movement of the replication forks away from the origin expands the replication bubble until two identical chromosomes are ultimately produced.

What is the name of the enzyme that replicates DNA?

The enzymes that accomplish the replication of DNA are called DNA polymerases. a.) The DNA double helix is composed of two strands of DNA; each strand is a polymer of DNA nucleotides.

Why do bacteria have different mechanisms of cell division?

Because of their divergent evolutionary paths , bacteria, plants, and animals have somewhat different mechanisms of chromosome separation and cell division. a.) In all cells, separation of replicated chromosomes is a prerequisite for cell division.

Which proteins bind to all nucleotides on the DNA molecule?

Regulatory proteins bind to all of the nucleotides on the DNA molecule.

What injects DNA into a cell?

Bacteriophages inject DNA into the bacterial cells.

What is the Hershey-Chase experiment?

The result of the Hershey-Chase experiment was that radioactivity could be detected inside the bacterial cells when they were infected by bacteriophages marked with phosphorus-32.

Why do eukaryotes have multiple replication forks?

Eukaryotes use multiple replication forks to replicate a larger volume of DNA.

What were the components of the Hershey-Chase experiment labeled with?

In the Hershey-Chase experiment, the components of bacteriophages were labeled with radioactive isotopes of sulfur and phosphorus. What was the Hershey-Chase experiment designed to determine?

When does DNA replication occur?

DNA replication occurs only during the S phase of the cell cycle. A scientist uses radioactive isotopes to label a double-stranded molecule of DNA. Then the DNA undergoes replication in a non-radioactive medium.

What did Griffith conclude about the heritable substance?

Based on the results, Griffith was able to conclude that a heritable substance transforms harmless bacteria into harmful bacteria. He reasoned that this was true because it was evident that one type of bacteria (the harmless form) had been permanently changed into the disease-causing form.

How many strands are in DNA?

A DNA molecule consists of two antiparallel strands of polynucleotides. Each strand is composed of nucleotides bound to each other along the sugar-phosphate backbone.

Why are complementary DNA strands separated?

Complementary DNA strands are separated or "unzipped" for the replication process. Weak hydrogen bonds between complementary strands are easily disrupted during DNA replication because they are not high-energy chemical bonds. A DNA molecule consists of two antiparallel strands of polynucleotides.

What is the double helix of DNA?

The DNA double helix is composed of two strands of DNA; each strand is a polymer of DNA nucleotides. Each nucleotide consists of a sugar, a phosphate group, and one of four nitrogenous bases. The structure and orientation of the two strands are important to understanding DNA replication.

How to tell which end of DNA is 3'?

You can tell which end is the 3' end by the presence of a hydroxyl (-OH) group. The structure of DNA polymerase III is such that it can only add new nucleotides to the 3' end of a primer or growing DNA strand (as shown here). This is because the phosphate group at the 5' end of the new strand and the 3' -OH group on the nucleoside triphosphate will ...

What is the complement of a DNA strand?

The complementary strands are antiparallel, with one strand running 5' to 3', and its complement running 3' to 5'. The 3' end of a DNA strand has an exposed -OH group, and the 5' end has a phosphate group. What is the role of DNA polymerase during DNA synthesis?

What is DNA made of?

DNA is a double-stranded molecule made up of complementary, antiparallel strands. Based on what you know about complementary base pairing, fill in the rest of the details in the figure. *The nucleotide pairs in double-stranded DNA follow the base-pairing rules: A with T, and G with C.

What is the reaction that adds a nucleotide to DNA?

Addition of a nucleotide onto a DNA strand is an endergonic reaction. What provides the energy to drive the reaction?