In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts? Answer:
DNA contains phosphorus, whereas protein does not.
Which characteristics allowed Hershey and Chase to determine?
What was the key factor that allowed Hershey and Chase to show that DNA alone carried the genetic information of a bacteriophage?
DNA contains phosphorus
, but protein does not. Protein contains sulfur, but DNA does not. This allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.
How did Hershey and Chase “label” viral DNA and proteins so that they could be distinguished? …
Because proteins, but not DNA, contain sulfur, radioactive sulfur atoms were incorporated only into the protein of the phage
. Describe the means by which Hershey and Chase established that only the DNA of a phage enters an E.
Which of the following is a reason that a new DNA strand elongates only in the 5 –> 3 direction during DNA replication?
why does a new DNA strand elongates only in the 5′ to 3′ direction?
DNA polymerase can only add nucleotides to the free 3′ end.
What is meant by the description antiparallel regarding the two strands that make up the DNA double helix group of answer choices?
What is meant by the description “antiparallel” regarding the two strands that make up the DNA double helix?
The 5′ to 3′ direction of one strand runs counter to the 5′ to 3′ direction of the other strand
. … DNA is usually double-stranded, whereas RNA is usually single-stranded.
What conclusion can be drawn from the bacteria experiment?
He concluded that
heat-killed S strain bacteria passed on their genetic material to the offspring
, so the harmless bacteria transformed into the type that causes pneumonia. He named the process transformation and concluded that gene was a transforming factor.
What are two characteristics that DNA needs to fulfill its role as a genetic material?
Describe two characteristics that DNA needs to fulfill its role as a genetic material.
DNA must code for a protein and be able to replicate.
Is sulfur present in DNA?
They also knew that proteins contain sulfur atoms but
no phosphorus
, while DNA contains a great deal of phosphorus and no sulfur.
What did the Hershey-Chase experiment prove?
The Hershey-Chase experiment, which demonstrated that
the genetic material of phage is DNA, not protein
. … In one set, the protein coat is labeled with radioactive sulfur (
35
S), not found in DNA.
What are the three key roles of DNA?
What are the three key roles of DNA?
Storing, copying, and transmitting information
. 12:1-3b. Why would the storage of genetic information in genes help explain why chromosomes are separated so carefully during mitosis?
Why can DNA polymerase only add to the 3 end?
DNA pol uses
the energy provided by hydrolysis of the high-energy phosphate bond at the 5′ end of the incoming nucleotide
to add it to the 3′ end of the growing DNA. … Without the high-energy phosphate bond, the correct nucleotide can not be added.
Which of the following facts did Hershey and Chase make use of in trying to determine whether DNA or protein is the genetic material group of answer choices?
In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts? Answer:
DNA contains phosphorus, whereas protein does not.
What is the basis for the difference in how the leading and lagging?
What is the basis for the difference in how the leading and lagging strands of DNA molecules are synthesized?
DNA polymerase can join new nucleotides only to the 3′ end of a pre-existing strand, and the strands are antiparallel
.
What are the important features of the double helix structure?
The salient features of double helix structure of DNA are as follows:
There are two polynucleotide chains in a double stranded DNA. The backbone is constituted by sugar phosphate. The two strands possess anti-parallel polarity, means one chain has polarity 5′-3′ and the other has 3′-5′
.
What does 3 and 5 DNA mean?
Each end of DNA molecule has a number. One end is referred to as 5′ (five prime) and the other end is referred to as 3′ (three prime). The 5′ and 3′ designations refer to
the number of carbon atom in a deoxyribose sugar molecule to which a phosphate group bonds
.
What are the four pairs of DNA bases that form in the double helix?
These chemical bonds act like rungs in a ladder and help hold the two strands of DNA together. There are four nucleotides, or bases, in DNA:
adenine (A), cytosine (C), guanine (G), and thymine (T)
. These bases form specific pairs (A with T, and G with C).
