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After photoisomerization of the retinal molecule, which amino acid residue becomes a proton acceptor of the donor proton from the retinal molecule?
Which of the following are the properties of a proton? 1. Proton is a positively charged particle. 2. Protons are found outside the nucleus of an atom. 3. The charge of a proton is equal and opposite to the charge of an electron.
Which of the following is the correct definition of mole? (A) It is equal to the gram atomic mass of the substance (B) It contains 6.022 × 1020 atoms of the given substance (C) It is equal to the gram molecular weight of the substance (D) It contains 6.022 × 1023 molecules of the given substance
Which of the following statement is correct? Statement 1: The addition of hydrogen to a substance and the removal of the oxygen from a substance is called oxidation. Statement 2: The addition of oxygen in a substance and the removal of  Hydrogen from a substance is called reduction.  
Which of the following statements is/are correct? 1. In Intracytoplasmic sperm injection method ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and are induced to form zygote under simulated conditions in the laboratory. 2. In vitro fertilisation is a specialised procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum.
Consider the following statements with regard to semiconductors: 1. In n-type material free electron concentration is nearly equal to the density of donor atoms. 2. 1 part in 108  donor type impurity added to Ge improves its conductivity at 30°C by a factor of 12. 3. Phosphorus is an example of n-type impurity. 4. Conductivity of Si is more sensitive to temperature than Ge. Which of these statements are correct?
Choose the correct answer
(1) A trustee may also be a beneficiary and can be the sole beneficiary
(2) A trustee may also be a beneficiary, but cannot be the sole beneficiary
(3) A donor may also constitute himself a trustee, and though remaining in possession, may transfer legal possession by declaring his possession as donee's.
(4) A donor may also constitute himself a trustee, and though remaining in possession, cannot transfer legal possession by declaring his possession as donee's.
A donee which has taken all the properties of the donor and also liable to discharge all the liabilities of the donor is known as:
Where a gift consists of the donor's whole property, the donee is personally liable for all the debts due by and liabilities of the donor at the time of the gift to the extent of the property comprised therein
In the catalysis of RNA by Bovine pancreatic RNase A, His 12 acts as proton donor.