Competitive Exams: Revision Terminology Part 6

  • N2 base + pentose sugar = Nucleoside + phosphate = Nucleotide

  • Higher Nucleotides in face State(2nd & 3nd release 8 kcal/mol on hydrolysis)

  • NAD = Universal hydrogen acceptor.

  • RNA = produced in nucleus stored in nucleolus moves out in cytoplasm

  • Extra nuclear DNA chloroplast & mitochondria

  • Pyrimidine’s in DNA – 5 methyl cytosine – wheat germ, thymus

  • Pyrimidine’s in DNA – 5 hydroxyl methyl cytosine – Teven E.coli

  • X ray diffraction of DNA – wilking, franklin, Asturby

  • On heating – 2 strands of DNA uncoil & denature

  • On cooling – 2 strands of DNA together – annealing/ renaturation

  • Z – DNA – Zigzag sequence, dinucleotide, left handed double helical Wang, Rich(1979) – CGCGCG sequences, 12 base pair (pro & eukaryote) – gene recombination

  • A DNA will be shorter & have greater diameter then B - form

  • High degree of stability of DNA helix – large no of H2 bond between base pair, right-handed to left handed helix.

  • V. Sasisekharan – RL model – B – DNA has alternating right & left fragment = conformation flexibility

  • Ds RNA = Reovirus / Rice Dwarf virus.

  • M – RAN – Jacob & monad – synthesis of protein

  • R- RAN – largest RAN – protein synthesis

  • T – RAN – Clover lead like structure

  • Ni – urease

  • Mo – dinitrogenase

  • DNA – percentage of C = 18 percentage of A =? Solving this question we have, A+G+C+T=100%(G=C) and then A+T+18+18=100(A=T) , so we can say that 2A=64 and A=32%

  • Bright field microscopy – bright light & object appears dark

  • Compound microscope – 2 lenses (1) objective (2) eyepiece (ocular)

  • 100 X = highest power = oil immersion lens (abbe)

  • θ = 39 degree in high power objective

  • Resolving power = 1limitofresolution