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Which of the following statements about methanogens is not correct?
Given below are two statements: Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid. Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome. In the light of the above statements, choose the correct answer from the options given below:
Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals
Statements related to human Insulin are given below. Which statement(s) is/are correct about genetically engineered Insulin?
Panspermia, an idea that is still a favorite for some astronomers, means:
In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as:
Amino acid sequence in protein synthesis is decided by the sequence of:
Select the two correct statements out of the four (a-d) given below about lac operon: (a) Glucose or galactose may bind with the repressor and inactivate it. (b) In the absence of lactose, the repressor binds with the operator region. (c) The z-gene codes for permease. (d) This was elucidated by Francois Jacob and Jacques Monod.
A 12 V, 60 W lamp is connected to the secondary of a step-down transformer, whose primary is connected to AC mains of 220 V. Assuming the transformer to be ideal, what is the current in the primary winding?
HCl was passed through a solution of $CaCl_2$, $MgCl_2$ and $NaCl$. compound(s) crystallise(s)?
DNA replication is semi-conservative in nature. This was experimentally proved in eukaryotes by:
Which of the following is the initiation codon:
Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
An alpha nucleus of energy 1/2 mv² bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the alpha nucleus will be proportional to
The output ($Y$) of the given logic gate is similar to the output of an/a:
Darwin's finches are an excellent example of:
Match List-I with List-II: List-I A. Gene pool B. Genetic drift C. Genetic flow D. Genetic equilibrium (Gene frequency) List-II I. Stable within a generation II. Change in gene frequency by chance III. Transfer of genes into or out of population IV. Total number of genes and their alleles
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
The ionisation energy of hydrogen atom is 13.6 eV, the ionisation energy of helium atom would be:
The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of