Podcast
Questions and Answers
Which of the following is a component of a nucleotide?
Which of the following is a component of a nucleotide?
- Heterocyclic base (correct)
- Amino acid
- Fatty acid
- Polypeptide
What is the name given to the combination of a sugar and a base in a nucleic acid?
What is the name given to the combination of a sugar and a base in a nucleic acid?
- Hydrogen bond
- Nucleotide
- Phosphate ester
- Nucleoside (correct)
Which of the following nucleotides is involved in cellular energy and signaling processes?
Which of the following nucleotides is involved in cellular energy and signaling processes?
- Cytosine
- ATP (correct)
- Thymine
- Guanine
What is the specific sequence of bases (GCAT) in DNA connected by?
What is the specific sequence of bases (GCAT) in DNA connected by?
Which of the following pairs of bases in DNA are complementary and form hydrogen bonds?
Which of the following pairs of bases in DNA are complementary and form hydrogen bonds?
What is the collective term for the coiled and supercoiled structures formed by DNA molecules in cells?
What is the collective term for the coiled and supercoiled structures formed by DNA molecules in cells?
Study Notes
- Nucleic acids, like DNA and RNA, are important molecules that determine an organism's identity and play a crucial role in combating diseases like cancer.
- Nucleotides, the building blocks of nucleic acids, consist of a monosaccharide, a heterocyclic base (purines or pyrimidines), and a phosphate group.
- Nucleosides are formed when sugars and bases combine, with names related to the bases (e.g., adenosine, deoxyadenosine).
- Nucleotides like ATP and cyclic AMP are essential for cellular energy and signaling processes.
- In DNA, nucleotides are connected by phosphate esters in a specific sequence of bases (GCAT), forming a double helix structure.
- DNA strands pair up in a complementary manner due to hydrogen bonding between specific bases (A-T, C-G), allowing for an immense number of possible sequences.
- DNA molecules are stored in cells by coiling around histone proteins and undergoing supercoiling to save space, forming chromosomes and chromatin collectively.
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Description
Test your knowledge on nucleic acids, DNA, nucleotides, and their role in cellular processes. Explore topics like nucleosides, DNA pairing, and chromatin structure.
