Bio chapter 10 A
Terms in this set (30)
A major characteristic of the structure of DNA is that _____.
the ratio of A to T is close to 1:1 and the ratio of G to C is close to 1:1
After replication, ______.
each new DNA double helix consists of one old strand and one new strand
DNA and RNA are polymers composed of ______ monomers.
DNA and RNA are polymers of ______.
DNA replication _____.
provides exact copies of chromosomes for the progeny of cell division and assures perpetuation of the species
During replication, ______ are the enzymes responsible for joining the nucleotides of a new DNA strand together.
During the replication of DNA molecules, _____.
both strands of the DNA molecule serve as templates
Evidence for the spiral nature of DNA came from ______.
X-ray crystallography studies
If adenine makes up 20% of the bases in a DNA double helix, what percent of the bases are guanine?
If one strand of a DNA double helix has the sequence GTCCAT, what is the sequence of the other strand?
In a DNA double helix, adenine pairs with ______ and guanine pairs with ______.
thymine . . . cytosine
Monomers for the synthesis of DNA are called _____
One strand of DNA serves as a template for the synthesis of another so that _____.
the progeny of each cellular replication gets the same genetic information
RNA contains ______, whereas DNA contains ______.
uracil . . . thymine
The DNA double helix is ______.
made up of two polynucleotide strands
The DNA polynucleotide structure contains all but one of the following. Which is it?
The backbone of DNA consists of ______.
a repeating sugar-phosphate-sugar-phosphate pattern
The flow of information in a cell proceeds _____.
from DNA to RNA to protein
The information carried by a DNA molecule is in _____.
the order of the nucleotides in the molecule
The two sugar-phosphate strands with their associated nitrogenous bases of a DNA molecule are joined to each other by _____.
hydrogen bonds between nucleotide bases
Two new strands of DNA grow as bases are added by the enzyme _____.
Viruses that infect bacteria are ______.
What do DNA and RNA have in common?
composed of nucleotides
What enzyme catalyzes the elongation of a new DNA strand?
Which of the following is not directly involved in DNA replication?
Which of the following is characteristic of a DNA double helix?
The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine.
Which one of the following catalyzes the linkage between nucleotides to form mRNA?
Which one of the following is a list of the four bases contained in DNA?
adenine, guanine, cytosine, thymine
Who discovered the structure of DNA?
Watson and Crick
Which one of the following processes takes place in the nucleus?
removal of introns from RNA