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The building blocks of DNA are nucleotides, which are made up of three parts: a deoxyribose (5-carbon sugar), a phosphate group, and a nitrogenous base (Figure 9.3). There are four types of nitrogenous bases in DNA.
- What do DNA molecules consist of?
- How many strands does the DNA molecule consist of?
- What are the 3 parts of DNA monomers?
- How many DNA bases are there?
- What are the three components of a DNA nucleotide?
- How many base pairs are in A DNA molecule?
- Why does A DNA molecule consist of two strands?
- What are the 4 types of DNA?
- What are three main components of DNA and RNA molecules?
- What is polymer of DNA?
- What are the 3 main functions of DNA?
- What are the parts of DNA?
- What are the 3 types of DNA?
- How many types of DNA are there?
- What are the five parts of DNA?
What do DNA molecules consist of?
The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), and thymine (T).
How many strands does the DNA molecule consist of?
Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.
What are the 3 parts of DNA monomers?
The monomers of DNA are called nucleotides. Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue. The four bases are adenine (A), cytosine (C), guanine (G) and thymine (T).
How many DNA bases are there?
There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
What are the three components of a DNA nucleotide?
A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).
How many base pairs are in A DNA molecule?
According to Watson-Crick base-pairing, which forms the basis for the helical configuration of double-stranded DNA, DNA contains four bases: the two purines adenine (A) and guanine (G) and the two pyrimidines cytosine (C) and thymine (T). Within the DNA molecule, A bonds only with T and C bonds only with G.
Why does A DNA molecule consist of two strands?
Explanation: There are two strands of a DNA that are twisted into a helix. Those two strands are formed by pairs of nitrogenous bases that are connected to each other. ... The two sides of the helix are held together by weak bonds, that's why it is easy to create DNA replications from a parent cell to the offspring.
What are the 4 types of DNA?
Because there are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).
What are three main components of DNA and RNA molecules?
Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. DNA provides the code for the cell 's activities, while RNA converts that code into proteins to carry out cellular functions.
What is polymer of DNA?
DNA. DNA is a polymer made from four different monomers , called nucleotides . These join together in different combinations to make long strands. In a DNA molecule , two strands wrap around each other to form a double helix structure.
What are the 3 main functions of DNA?
DNA now has three distinct functions—genetics, immunological, and structural—that are widely disparate and variously dependent on the sugar phosphate backbone and the bases.
What are the parts of DNA?
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
What are the 3 types of DNA?
Three major forms of DNA are double stranded and connected by interactions between complementary base pairs. These are terms A-form, B-form,and Z-form DNA.
How many types of DNA are there?
There are two types of DNA in the cell – autosomal DNA and mitochondrial DNA. Autosomal DNA (also called nuclear DNA) is packaged into 22 paired chromosomes. In each pair of autosomes, one was inherited from the mother and one was inherited from the father.
What are the five parts of DNA?
(The Double Helix)
DNA is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).
