Process of Translation

Q.

What are the main similarities and differences between DNA and RNA?

Q.

Why do we need RNA primers in DNA replication?

Q.

The codon is read in mRNA in a contiguous fashion. This reflects which of the given features of the genetic code?

1. Genetic code is degenerate

2. Genetic code is a triplet

3. Genetic code is universal

4. There are no punctuations

Q. Assertion (A): One codon may code for more than one amino acid.
Reason (R): A codon is degenerate and ambiguous.

1. Both assertion and reason are true and reason is the correct explanation of the assertion
2. Both assertion and reason are true but reason is not the correct explanation of the assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false

Q. Aminoacylation of tRNA is essential for

1. Replication of RNA
2. Formation of peptide bond
3. Initiation of transcription
4. Splicing
5. Termination

Q. Which of the following statements does not apply to reverse osmosis?

1. It is used for water purification.
   
2. In this technique, pressure greater than osmotic pressure is applied to the system
   
3. It is an active process
4. It is a passive process
   

Q. How many amino acids will be translated by the mRNA sequence – 5’CCCUCAUAGUCAUAC3’ if an adenosine residue is inserted after 12th nucleotide?

1. 2 amino acids
2. 3 amino acids
3. 5 amino acids
4. 6 amino acids

Q.

Uracil is present in RNA at the place of

1. Guanine

2. Thymine

3. Adenine

4. Cytosine

Q.

Whats another word for DNA?

Q. Choose the correct option with respect to RNA.

1. Mutates at a faster rate
2. Absence of free 2' OH in ribose
3. Presence of thymine in place of uracil
4. Is non-catalytic

Q. Assertion : Replication and transcription occur in the nucleus but translation takes place in the cytoplasm.

Reason : mRNA is transferred from the nucleus into cytoplasm where ribosomes and amino acids are available for protein synthesis.

1. If both assertion and reason are true and reason is the correct explanation of assertion
2. If assertion is true but reason is false
3. If both assertion and reason are false
4. If both assertion and reason are true but reason is not the correct explanation of assertion

Q. The primary constriction of a chromosome are surrounded by ______.

1. Centromere
2. Kinetochore
3. Satellite
4. Centrosome

Q. Electron Transport System $\left(ETS\right)$ is located in mitochondrial

1. Outer membrane
2. Inter membrane space
3. Inner membrane
4. Matrix

Q. “Bt” toxin is

1. Intracellular lipid
2. Intracellular crystalline protein
3. Extracellular crystalline protein
4. Lipid

Q. ATP synthase enzyme consists of two parts. What are those parts? How are they arranged in the thylakoid membrane? Conformational changes occur in which part of the enzyme?

Q.

What is transpeptidase enzyme?

Q. Chromosome maps/genetic maps were first prepared by

1. Sutton and Boveri
2. Bateson and Punnett
3. Morgan
4. Sturtevant

Q. Isotopes used in proving semi-conservative replication of DNA were

1. ${}^{14}\text{N}{,}^{15}\text{N}$
2. ${}^{14}\text{C}{,}^{31}\text{P}$
3. ${}^{14}\text{N}{,}^{14}\text{C}$
4. ${}^{14}\text{N}{,}^{31}\text{P}$

Q.

Is ribosome an organelle?

Q. Given below is a representation of a kind of chromosomal mutation. What is the kind of mutation represented?

1. Deletion
2. Duplication
3. Inversion
4. Reciprocal translocation

Q. Assertion : Bacterial cells are made competent before transformation.
Reason : They are treated with a divalent cation in the process of making them competent.
Select the appropriate option.

1. Both the assertion and reason are true and the reason is the correct explanation of assertion
2. Both the assertion and reason are true and reason is not the correct explanation of assertion
3. Assertion is true but the reason is false
4. Both the assertion and reason are false

Q. Explain the steps involved in translation

Q.

DNA is the blueprint of body designs.

1. True
2. False

Q.

How do ribosomes and mitochondria work together?

Q.

What is transcriptional control of gene expression?

Q. Cut pieces of beetroot, do not leave colour in cold water but do so in hot water. Explain.

Q.

State the location of the centromere.

Q. Which of the following is the site of lipid synthesis?

1. Golgi bodies
2. Rough ER
3. Smooth ER
4. Ribosome

Q.

What is the function of the repressor in the E.Coli Lac Operon?

Q.

If the DNA content of a cell in G1 phase is 4C, what would be its DNA content in G2 phase?

1. 1C

2. 2C

3. 4C

4. 8C