Genetic RNA

Q. Which of the following functions is NOT attributed to non-genetic RNA?

1. Transports amino acids from cytoplasm to ribosomes for protein synthesis
2. Acts as the hereditary material in many organisms
3. Exist as components of ribosomes
4. Acts as messenger to carry information from nucleus to cytoplasm

Q. Match the types of RNAs with their corresponding functions.
$\begin{array}{cc}\text{Types of RNA}& \text{Functions}\\ \text{i. tRNA}& \text{a. Primary component of ribosomes}\\ \text{ii. mRNA}& \text{b. Carries amino acid to the ribosomes}\\ \text{iii. rRNA}& \text{c. Carries information for protein synthesis}\end{array}$

1. i-c, ii-a, iii-b
2. i-b, ii-c, iii-a
3. i-a, ii-c, iii-b
4. i-b, ii-a, iii-c

Q.

What is the capsid of bacteriophage made up of?

Q. C-value paradox is

1. Diploid DNA content
2. Haploid DNA content
3. Variation of C-value
4. Constancy of C-value

Q.

Explain structure of some important viruses in detail like TMV and bacteriophages T_2.

Q. What is cistron?

Q. How many of the following statements are correct regarding functions of RNA?

A. It is a carrier of genetic information from DNA to ribosomes for synthesizing polypeptides.

B. It carries amino acids to ribosomes.

C. It is constituent component of ribosomes.

D. It contains the genetic makeup of most of the cell.

1. 2
2. 3
3. 4
4. 1

Q. Assertion :DNA is considered to be better genetic material than RNA for most organisms. Reason: 2- OH group present in DNA makes it labile and less reactive.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. What are exons and introns ?

Q. Identify the following images.

1. A– Tobacco mosaic virus, B– Coccus, C– Bacillus
2. A–Coccus, B–Bacillus, C–Tobacco mosaic virus
3. A– Bacillus, B– Coccus, C– Tobacco mosaic virus
4. A– Coccus, B– Tobacco mosaic virus, C– Bacillus

Q. Match the types of RNAs with their corresponding functions.
$\begin{array}{cc}\text{Types of RNA}& \text{Functions}\\ \text{i. tRNA}& \text{a. Primary component of ribosomes}\\ \text{ii. mRNA}& \text{b. Carries amino acid to the ribosomes}\\ \text{iii. rRNA}& \text{c. Carries information for protein synthesis}\end{array}$

1. i-c, ii-a, iii-b
2. i-b, ii-c, iii-a
3. i-a, ii-c, iii-b
4. i-b, ii-a, iii-c

Q. Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria?

1. 5·8s rRNA
2. 5s rRNA
3. 18s rRNA
4. 23s rRNA

Q. Mitochondrial DNA is

1. Circular
2. Both B and C
   
3. Naked
4. Double stranded

Q. Which one of the following contains the genetic material of a eukaryotic cell?

1. Golgi apparatus
2. Mitochondria
3. Nucleolus
4. Nucleus

Q. Which of the following has RNA as its genetic material?

1. E. coli
2. Tobacco Mosaic Virus
3. Agrobacterium
4. Amoeba

Q. The genes are responsible for growth and differentiation in an organism. They achieve this regulation through

1. Transformation
2. Translocation
3. Transduction and translation
4. Translation and transcription

Q. First step in Southern blot technique is

1. Digestion of DNA by restriction enzyme
2. Denaturation of DNA on the gel for hybridisation with specific probe
3. Denaturation of DNA from a nucleated cell as from the scene of crime
4. Production of a group of genetically identical cells

Q. Mention four features of $pB{R}_{322}$.

Q. The term 'southern blotting' refers to

1. Transfer of DNA fragments from electrophoresis gel to nitrocellulose sheet
2. Attachment of probes to DNA fragments
3. Transfer of DNA fragments from in vitro cellulose membrane to electrophoresis gel
4. Comparison of DNA fragments from two sources

Q. Which of the following functions is NOT attributed to non-genetic RNA?

1. Acts as messenger to carry information from nucleus to cytoplasm
2. Transports amino acids from cytoplasm to ribosomes for protein synthesis
3. Exist as components of ribosomes
4. Acts as the hereditary material in many organisms

Q. Can you suggest a method to remove oil (hydrocarbon) from seeds based on your understanding of rDNA technology and chemistry of oil?

Q. Enlist types of non-genetic RNA.

Q. All the structural genes of the operon are transcribed on a single long mRNA.

1. True
2. False

Q. Choose the correct answer from the alternatives given.
An eukaryotic chromosome differs from a bacterial chromosome in having

1. reverse transcriptase
2. introns
3. start and stop signals
4. thymine instead of uracil

Q. Which among the following is not a RNA molecule ?

1. r RNA
   
2. x RNA
3. t RNA
4. m RNA

Q. Where is the genetic material located in a cell ?

Q. Which of the following has RNA as its genetic material?

1. E. coli
2. Tobacco Mosaic Virus
3. Agrobacterium
4. Amoeba

Q. Which of the following has RNA as its genetic material?

1. Tobacco Mosaic Virus
2. E. coli
3. Agrobacterium
4. Amoeba

Q. Which of the following part of DNA contains genes?

1. Junk DNA
2. Whole DNA
3. Coding DNA
4. Any of the above

Q. The nucleus is NOT important as the site of

1. DNA synthesis.
2. RNA synthesis.
3. synthesis of ribosomal subunits.
4. protein synthesis.