Mayank1444 – Activity – Forum

Mayank1444

@mayank1444

Noble Member

Joined: Oct 11, 2021
Last seen: Nov 14, 2021

Topics: 0 / Replies: 2157

Answer to: Select the two correct statements out of the four (i–iv) given below about lac operon. (i) Glucose or galactose may bind with the repressor and inactivate it

Correct answer: (1) (ii) and (iv)

4 years ago

Forum

Biology

Answer to: The one aspect which is not a salient feature of genetic code is its being

Correct answer: (4) ambiguous

4 years ago

Forum

Biology

Answer to: Satellite DNA is useful tool in (1) forensic science (2) organ transplantation (3) genetic engineering (4) sex determination

Correct answer: (1) forensic science

4 years ago

Forum

Biology

Answer to: Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

Correct answer: (3) Adenine, Thymine - Purines

4 years ago

Forum

Biology

Answer to: Haploids are more suitable for mutation studies than diploids. This is because

Correct answer: (3) all mutations, whether dominant or recessive are expressed in haploids

4 years ago

Forum

Biology

Answer to: T.O. Diener discovered a (1) bacteriophage (2) free infectious DNA

Correct answer: (3) free infectious RNA

4 years ago

Forum

Biology

Answer to: What is not true for genetic code? (1) It is unambiguous (2) It is nearly universal

Correct answer: (3) A codon in mRNA is read in a non-contiguous fashion

4 years ago

Forum

Biology

Answer to: Removal of introns and joining the exons in a defined order in a transcription unit is called

Correct answer: (3) splicing

4 years ago

Forum

Biology

Answer to: During transcription, RNA polymerase holoenzyme binds to a gene promoter and assumes a saddle-like structure, what is its DNA-binding sequence?

Correct answer: (1) TATA

4 years ago

Forum

Biology

Answer to: One gene-one enzyme relationship was established for the first time in

Correct answer: (3) Neurospora crassa

4 years ago

Forum

Biology

Answer to: Molecular basis of organ differentiation depends on the modulation in transcription by

Correct answer: (3) RNA polymerase

4 years ago

Forum

Biology

Answer to: In the DNA molecule (1) the proportion of Adenine in relation to thymine varies with the organism

Correct answer: (3) there are two strands which run anti-parallel one in 5′ → 3′ direction and other in 3′ → 5′

4 years ago

Forum

Biology

Answer to: Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

Correct answer: (4) UAG, UGA-Stop

4 years ago

Forum

Biology

Answer to: One gene-one enzyme hypothesis was postulated by

Correct answer: (1) Beadle and Tatum

4 years ago

Forum

Biology

Answer to: In which mode of inheritance do you expect more maternal influence among the offspring?

Correct answer: (2) Cytoplasmic

4 years ago

Forum

Biology

Answer to: The okazaki fragments in DNA chain growth (1) polymerize in the 5’ - to - 3’ direction and explain 3’ - to - 5’ DNA replication (2) polymerize in the 3’ - to - 5’ direction and forms replication fork

Correct answer: (1) polymerize in the 5’ - to - 3’ direction and explain 3’ - to - 5’ DNA replication

4 years ago

Forum

Biology

Answer to: The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

Correct answer: (2) super-coiling in nucleosomes

4 years ago

Forum

Biology

Answer to: A sequential expression of a set of human genes (1) ribosome (2) messenger RNA (3) transfer RNA (4) DNA sequence

Correct answer: (4) DNA sequence

4 years ago

Forum

Biology

Answer to: In transgenics, expression of transgene in target tissue is determined by

Correct answer: (4) transgene

4 years ago

Forum

Biology

Answer to: E.coli cells with a mutated z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because

Forum

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