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Chapter 9: DNA - CW
Crossword for Chapter 9 DNA
Question | Answer |
---|---|
Adenine | A nitrogenous base found in both DNA and RNA, abbreviated as A. |
Base | In molecular genetics, one of the nitrogen-containing, single- or double- ringed structures that distinguish one nucleotide form another. In DNA, the bases are adenine, guanine, cytosine, and thymine |
Chromosome | A single double helix together with proteins that help organize DNA |
Complimentary base pair | In nucleic acids, bases that pair by hydrogen bonding. In DNA, adenine is complimentary to thymine and guanine is complimentary to cytosine. |
Cytosine | A nitrogenous base found in both DNA and RNA, abbreviated as C. |
DNA double helicase | An enzyme that helps unwind the DNA double helix during DNA replication |
DNA ligase | An enzyme that joins the sugar and phosphates in DNA strand to create a continuous sugar-phosphate backbone |
DNA polymerase | An enzyme that bonds DNA nucleotides together into a continuous strand, using a preexisting DNA as a template |
Replication | The copying of the double stranded DNA molecule producing two identical DNA double helices |
base that pairs with thymine in DNA | Adenine |
letter that symbols for purine bases in DNA | AG |
complimentary base sequence for TTAG | AATC |
enzyme that connects the nucleotides in a newly made DNA strand | Ligase |
type of nitrogenous base with two rings of atoms | Purine |
DNA replication is ______-conservative | Semi |
letter symbols for pyrimidine bases in DNA | TC |
DNA has a double-______ 3-D structure | Helix |
complimentary base sequence for CAATG | GTTAC |
type of nucleic acid with ribose sugar | RNA |
what genes are made of | DNA |
number of sizes of nitrogenous bases in nucleic acids | Two |
new strands of DNA are made using this enzyme | Polymerase |
smallest unit of life | Cell |
base that pairs with guanine in DNA | Cytosine |
co-discoverer of the double helix DNA structure | Watson |
has a phosphate group, a sugar, and a nitrogenous base | Nucleotide |
the opposite complementary base pair to TA | AT |
type of nitrogenous base with one ring of atoms | Pyrimidine |
an example is adenine | Base |
the enzyme that unwinds DNA during replication | Helicase |
cell structure in nucleus containing genetic material | Chromosome |
base that pairs with cytosine in DNA | Guanine |
number of different bases in a DNA molecule | Four |
co-discoverer of the double helix DNA structure | Crick |
number of types of sugar molecules in DNA | One |
a molecule of DNA is _____ stranded | Double |
DNA contains four types of _____ | Bases |
sugars found in DNA have _____ carbons each | Five |
DNA is found in cellular ______ | Chromosomes |
DNA contains sugars, bases, and _____ groups | Phosphorus |
purine bases are _____molecules than pyrimidine bases | Larger |
the concentration of DNA is ______ for different body cells of the same species | Constant |
adenine pairs with _____ in DNA | Thymine |
the duplication of DNA is called _____-conservative replication | Semi |
the building blocks of nucleic acids are _____ | Nucleotides |
purine bases | A and G |
pyrimidine bases | C and T |
base pairs in DNA | A-T and G-C |
single ring bases | C and T |
double ring bases | A and G |
If amounts of bases in a DNA molecule are measured, we find... | T=A and G=C |
when comparing DNA and RNA, we find | Adenine pairs with different bases in DNA and RNA |
the DNA of a certain organism has guanine as 30% of its bases. What percentage of its bases would be adenine? | 20% |
the correct structure of a nucleotide is | Phosphate-ribose-adenine |
the two polynucleotide chains in a DNA molecule are attracted to each other by | hydrogen bonds between bases |
using an analogy of DNA as a twisted ladder, the rungs (steps) of the ladder are | Paired nitrogenous bases |
all the cells of a specific organism contain equal amounts of | Guanine and cytosine |
the sequence of subunits in the DNA backbone is | phosphate--sugar--phosphate--sugar |
a pyrimidine base always base pairs with a | Double ring purine |