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Consider the following statements regarding the historical aspects of DNA and choose the correct answer:
1. Meischer isolated nucleic acids, which he called nuclein
2. Altmann used the term nucleic acid to replace nuclein
3. Fischer identified pyrimidines and purines
4. Griffiths discovered bacterial transformation by DNA

Consider the following statements regarding the historical aspects of DNA and choose the correct answer:
1. Meischer isolated nucleic acids, which he called nuclein
2. Altmann used the term nucleic acid to replace nuclein
3. Fischer identified pyrimidines and purines
4. Griffiths discovered bacterial transformation by DNA Correct Answer 1, 2, 3 and 4 are true

Related Questions

Consider the following statements about DNA Sequencing: 1. DNA Sequencing is used to detect the presence of a complementary sequence by hybridization with a nucleic acid sample. 2. DNA sequencing is the process of determining the nucleic acid sequence - the order of nucleotides in DNA. Which of the above statements is/are incorrect?
Mineral acids are stronger acids than carboxylic acids because (i) Mineral acids are completely ionised. (ii) Carboxylic acids are completely ionised. (iii) Mineral acids are partially ionised. (iv) Carboxylic acids are partially ionised.
In a batch process, the reaction takes place in the presence of an acid medium. The acid is drained from the reaction vessel at the rate of 15ml/s as a result of the density difference of the acid from the reacting component. To avoid wastage of acid, it is recycled to an acid tank which has 1000 L capacity. The acid drained from the reaction vessel, picks up 50 g/L solids from the reactor. Acid is fed once again to the process from acid tank. When the process is started, the acid is almost pure in the tank as a result of filtration. As the reaction proceeds, acid in the tank gets more and more contaminated with the solids. The concentration of the solids should not exceed 100 g/L from the process point of view. The batch time is 16h. Estimate whether the concentration of the solids will exceed 100g/L during the batch reaction.
Consider the following statements regarding genetic code and choose the correct answer:
1. The genetic code is degenerate
2. In all amino acids the first two bases are the same in all the codons that represent a particular amino acid
3. The number of codons an amino acid can claim is proportional to the frequency of the amino acid in proteins
4. Amino acids with codons ending in U or A also have codons ending in C or G respectively
Consider the following statements regarding DNA replication and choose the correct answer:
1. The very first requirement of DNA synthesis is the presence of a template or plan along which the new strand is to be constructed
2. The second requirement is of a DNA-dependent-DNA polymerase or simply DNA polymerase enzyme
3. A DNA Pol cannot join two free nucleotides; one of them must be anchored by hydrogen bonds to a DNA strand
4. Replication takes place bidirectionally
Consider the following statements: I. All soils can be identified in the field by visual examination 2. Fine-grained soils can be identified in the field by visual examination and touch. 3. Fine-grained soils can be identified in the field by dilatancy test 4. By visual examination, only coarse-grained soils can be identified Which of the above statements are correct?
Consider the given statement and decide which of the given assumption/s is/are implicit. Statement: Serials/soaps are a reason for developing negative tendencies in women. Assumptions: I: Newspapers highlight the negative aspects first and then, the positive aspects. II: The attention given to the negative aspects is much higher than that given to the positive aspects.
Consider the given statement and which of the given assumptions is (are) implicit.
Statement:
The serials/soaps are a reason for developing negative tendencies in women. Assumptions :
1. Newspapers highlight the negative aspects first than the positive aspects.
2. The attention for negative aspects is much higher than positive aspects
Which of the following statements regarding interpretation in historical writing are correct? (A) Interpretation as an essential step in historical method seems to lie beyond criticism and exposition (B) To know what a document means is as much a challenge to critical judgment as to know when or by whom was it written, or whether one may trust it (C) The literary exposition of historical data is greatly conditioned by the interpretation one places upon them (D) Factual interpretation deals with the facts of a document, not with the words Choose the most appropriate answer from the options given below:
Purines and pyrimidines form glycosidic linkage with the purines and pyrimidines at the N6 position.