Genetics: 2, slides 1-13

which of the following are nucleotides made of?
1. 5 carbon sugar
2. nitrogenous base
3. phosphate groups
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Terms in this set (16)
which of the following are nucleotides made of?
1. 5 carbon sugar
2. nitrogenous base
3. phosphate groups
all
which of the following are nucleosides made of?
1. 5 carbon sugar
2. nitrogenous base
3. phosphate groups
5 carbon sugar and nitrogenous base
is the complementary strand parallel or antiparalell to the main strand?
antiparallel
when talking about strand polarity in DNA, what is on the 5' end and on the 3' end?
5' end: phosphate group
3' end: hydroxyl group
explain why g-c rich dna takes more energy to break than a-t rich dna.
g-c bonds are connected by 3 h-bonds where as a-t bonds are connected by 2 h-bonds
what does semi-conservative replication mean?
it means that each new molecule of DNA contains one original strand of DNA from a previous molecule (parental strand) and one newly replicated DNA strand (daughter strand)
what is a DNA duplex?
DNA replication produces two identical duplexes which are the two new DNA molecules that were made from one DNA molecule
in DNA replication, which enzyme catalyzes the formation of the phosphodiester bonds between the 3' hydroxyl group of the nucleotide and the 5' tri-phosphate group of another nucleotide?
DNA polymerase
fill in the blanks: in DNA, the helix has a ________-handed twist that is ________ bp/turn
right
10
a DNA molecule is 28% cystosine. What is the percent on thymine bases in the same molecule?
C=G
C=28%=G
--> 28+28= 56%
100-56%= 44%
44/2= 22
T=A= 22%

The percent of thymine bases is 22%
how many hydrogen bonds between A-T?2Which bases are purines?Adenine and Guaninewhich bases are pyrimidines?thymine and cytosinewhat aspect about nucleotide bases allows for them to twist?the bases are hydrophobichow many origins of replication do prokaryotes have in their dna?1do eukaryotes have multiple or 1 origin of replication in dna?multiple