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TLS Online TPP Program

#Id: 3368

In E. coli, DNA Pol IV (DinB) or DNA Pol V (a complex of the proteins UmuC and UmuD0 ) performs translesion synthesis. 

#Unit 3. Fundamental Processes #DNA damage and repair mechanisms #Part B Pointers
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TLS Online TPP Program

#Id: 7736

#Unit 1. Structure and Function of Biomolecules

The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
TLS Online TPP Program

#Id: 7737

#Unit 1. Structure and Function of Biomolecules

Calculate the number of electrons, protons and neutrons in 1 mole of 16^O-2 ions.
TLS Online TPP Program

#Id: 7738

#Unit 1. Structure and Function of Biomolecules

Which of the following are true for an element?

(i) Atomic number = number of protons + number of electrons

(ii) Mass number = number of protons + number of neutrons

(iii) Atomic number = number of protons = number of neutrons

(iv) Atomic number = number of protons = number of electrons

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iii)

(d) (ii) and (iv)
TLS Online TPP Program

#Id: 7739

#Unit 1. Structure and Function of Biomolecules

Atoms are characterised by:

Radius

Ionization energy

Electron affinity

Electronegativity

Metallic character

Oxidation potential
TLS Online TPP Program

#Id: 7740

#Unit 1. Structure and Function of Biomolecules

Atomic radii: The atomic radii of an atom depends on its position in the periodic table.
We can never determine the atomic radius of an atom because there is never a zero probability of finding an electron, and thus never a distinct boundary to the atom.
All that we can measure is the distance between two nuclei (internuclear distance).
TLS Online TPP Program

#Id: 7741

#Unit 1. Structure and Function of Biomolecules

Atomic radii: The atomic radii of an atom depends on its position in the periodic table.
We can never determine the atomic radius of an atom because there is never a zero probability of finding an electron, and thus never a distinct boundary to the atom.
All that we can measure is the distance between two nuclei (internuclear distance).