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DNA consists of how many chains?
A DNA molecule has two chains of nucleotides. Each chain is usually referred to as a DNA strand. RNA has only one strand.
Are the backbones of the DNA molecule identical in all living things?
Yes, the backbones of the DNA molecule are identical in all living things. The backbone consists of alternating sugar (deoxyribose) and phosphate groups, which are the same across all organisms. However, the sequences of the nitrogenous bases (adenine, thymine, cytosine, and guanine) that attach to this backbone vary, providing the unique genetic information for each species.
What is the most basic DNA structure?
The most basic DNA structure is a double helix composed of two complementary strands of nucleotides held together by hydrogen bonds. Each strand consists of a sugar-phosphate backbone with nitrogenous bases (adenine, thymine, cytosine, and guanine) attached to the sugars.
What is a matching strand of DNA compared to AGTAAC?
A matching strand of DNA to the sequence AGTAAC would be its complementary strand, which consists of the bases that pair with each nucleotide. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). Therefore, the complementary strand to AGTAAC would be TCATTG.
What is the piece holding DNA together?
The piece holding DNA together is the sugar-phosphate backbone, which consists of alternating sugar (deoxyribose) and phosphate groups. This backbone provides structural stability and support for the DNA molecule. Additionally, the nitrogenous bases (adenine, thymine, cytosine, and guanine) pair with each other through hydrogen bonds, forming the rungs of the DNA double helix and contributing to the molecule's overall integrity.
What is the handrails each DNA strand made up of?
Each DNA strand is made up of a backbone composed of alternating sugar and phosphate molecules, which are connected by covalent bonds. The nitrogenous bases (adenine, thymine, cytosine, and guanine) project inward from the backbone and pair up with complementary bases on the opposite strand through hydrogen bonding. This base pairing forms the "rungs" of the DNA ladder.
DNA consists of how many chains?
A DNA molecule has two chains of nucleotides. Each chain is usually referred to as a DNA strand. RNA has only one strand.
What happens after replication?
each new DNA double helix consists of one old strand and one new strand
What fills in the hand rails of each new DNA strand?
alternating deoxyribose sugar molecules and phosphate groups
How many rungs are in a DNA molecule?
A DNA molecule consists of two strands that are connected by hydrogen bonds between complementary bases. Each strand has a backbone made up of alternating sugar and phosphate groups, with bases extending inward. The number of rungs in a DNA molecule depends on the length of the molecule, with each base pair forming one "rung."
During dna replication each double helix produced consists of?
During DNA replication, each double helix produced consists of one original parental strand and one newly synthesized daughter strand. The parental strand serves as a template for the synthesis of the complementary daughter strand, resulting in two identical double helices.
What makes up the sides of the ladder of a DNA molecule?
The sides of a DNA molecule are made up of alternating sugar molecules (deoxyribose) and phosphate groups that form the sugar-phosphate backbone. Each sugar molecule is connected to one of four nitrogenous bases (adenine, thymine, cytosine, or guanine) that extend inward from the backbone and pair with a complementary base on the opposite strand.
What is the structure of polynucleotide chain?
A polynucleotide chain consists of a backbone made of alternating sugar and phosphate groups, linked by phosphodiester bonds. The sugars are typically ribose in RNA and deoxyribose in DNA. Attached to each sugar is a nitrogenous base (adenine, thymine, cytosine, or guanine in DNA; uracil replaces thymine in RNA), which pairs with complementary bases on another strand in double-stranded nucleic acids. This structure allows for the formation of helical shapes, particularly in DNA.
Are the backbones of the DNA molecule identical in all living things?
Yes, the backbones of the DNA molecule are identical in all living things. The backbone consists of alternating sugar (deoxyribose) and phosphate groups, which are the same across all organisms. However, the sequences of the nitrogenous bases (adenine, thymine, cytosine, and guanine) that attach to this backbone vary, providing the unique genetic information for each species.
What is the most basic DNA structure?
The most basic DNA structure is a double helix composed of two complementary strands of nucleotides held together by hydrogen bonds. Each strand consists of a sugar-phosphate backbone with nitrogenous bases (adenine, thymine, cytosine, and guanine) attached to the sugars.
What are polymeric backbone in silicone and phoazenes?
Polymeric backbones in silicones and phthalonitriles are fundamental components that define their structural and functional properties. In silicones, the backbone consists of alternating silicon and oxygen atoms (Si-O), which confer flexibility and thermal stability. In contrast, phthalonitriles feature a backbone formed by aromatic rings linked by nitrile groups (–C≡N), providing rigidity and high thermal resistance. These distinct backbones influence the physical properties and applications of each polymer type.
What is a matching strand of DNA compared to AGTAAC?
A matching strand of DNA to the sequence AGTAAC would be its complementary strand, which consists of the bases that pair with each nucleotide. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). Therefore, the complementary strand to AGTAAC would be TCATTG.
