Which of the following is/are true regarding the way aminoacyl-trna synthetases ensure the fidelity of translation? they can sense the improper fit of an amino acid and hydrolyze the intermediate prior to attachment to the trna. there is a short window of opportunity for the enzyme to hydrolyze the amino acid-trna bond before it is released for translation. the trna has a polynucleotide domain that is responsible for proofreading. aminoacyl-trna synthetases do not proofread.

Explanation:

An aminoacyl tRNA synthetase (aaRS) is a very important exhima during protein synthesis that is made through translation. This enzyme is an important factor not only for regulating the translation process, but also for the efficiency of a newly formed protein. This is because this enzyme is responsible for maintaining the fidelity of the genetic code during protein formation. This is done by detecting improper adjustment of an amino acid and hydrolyzing the intermediate prior to tRNA binding. furthermore, this enzyme may hydrolyze the amino acid-tRNA bond before being released for translation.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.