Quiz - Chapter 11 Sections 1 & 2 - AP Bio - 19 Nov 24

Chapter 11 Sections 1 and 2 Quiz

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   Deoxyribose - a five-carbon sugar molecule with a hydrogen atom rather than a (a)   group in the 2' position; the sugar component of DNA nucleotides.

Chapter 11 Sections 1 and 2 Quiz

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Double helix - the molecular shape of DNA in which two strands of (a)   wind around each other in a spiral shape.   

Chapter 11 Sections 1 and 2 Quiz

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Nitrogenous base - a nitrogen-containing molecule that acts as a base; often referring to one of the purine or (a)   components of nucleic acids.

Chapter 11 Sections 1 and 2 Quiz

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Phosphate group - a molecular group consisting of a (a)   phosphorus atom bound to four oxygen atoms.

Chapter 11 Sections 1 and 2 Quiz

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The model of the double-helix structure of DNA was proposed by Watson and Crick. The DNA molecule is a polymer of nucleotides. Each nucleotide is composed of a (a)   base, a five-carbon sugar (deoxyribose), and a phosphate group.

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Chapter 11 Sections 1 and 2 Quiz

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There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands. Each strand is composed of nucleotides bonded together (a)   between the phosphate group of one and the deoxyribose sugar of the next.

Chapter 11 Sections 1 and 2 Quiz

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From this backbone extend the bases. The bases of one strand bond to the bases of the second strand with hydrogen bonds. Adenine always bonds with thymine, and (a)   always bonds with guanine. The bonding causes the two strands to spiral around each other in a shape called a double helix.

Chapter 11 Sections 1 and 2 Quiz

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Ribonucleic acid (RNA) is a second nucleic acid found in cells. RNA is a single-stranded polymer of nucleotides. It also differs from DNA in that it contains the sugar ribose, rather than deoxyribose, and the nucleotide (a)   rather than thymine. Various RNA molecules function in the process of forming proteins from the genetic code in DNA.

Chapter 11 Sections 1 and 2 Quiz

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Prokaryotes contain a single, double-stranded circular chromosome. Eukaryotes contain double-stranded (a)   DNA molecules packaged into chromosomes. The DNA helix is wrapped around proteins to form nucleosomes.

Chapter 11 Sections 1 and 2 Quiz

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The protein coils are further coiled, and during mitosis and meiosis, the chromosomes become even more greatly coiled to (a)   their movement.

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