TLS Online TPP Program

#Question id: 803


A single-stranded DNA molecule contains 40 nucleotides and has the sequence 5’-(GA)20-3’. When this single strand binds to a complementary DNA strand to form a B-DNA structure,

#Part-B Specialized Branches in Biotechnology
  1. half the base-pairs will be A-G pairs and half will be C-T pairs.

  2. each base will form at least two hydrogen bonds with a base in the opposite strand.

  3. the two strands will form an antiparallel left-handed helix with 12 base pairs per turn.

  4. there will be covalent phosphodiester bonds between the two strands.

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TLS Online TPP Program

#Question id: 12069

#Part-B Specialized Branches in Biotechnology

Post-tetanic facilitation is thought to be the result of

TLS Online TPP Program

#Question id: 12069

#Part-A Aptitude & General Biotechnology

Post-tetanic facilitation is thought to be the result of

TLS Online TPP Program

#Question id: 12173

#Part-A Aptitude & General Biotechnology

Female with only one X chromosome is a characteristics of individual with

TLS Online TPP Program

#Question id: 12173

#Part-B Specialized Branches in Biotechnology

Female with only one X chromosome is a characteristics of individual with

TLS Online TPP Program

#Question id: 12187

#Part-B Specialized Branches in Biotechnology

How cells know whether sister kinetochores are properly attached to the mitotic spindle?

TLS Online TPP Program

#Question id: 12188

#Part-B Specialized Branches in Biotechnology

The series of events by which APC/C promotes the separation of sister chromatids at anaphase.
A. all the kinetochores have attached to spindle microtubules and the spindle apparatus is properly assembled and oriented.
B. Cdc20 specificity factor associated with APC/C directs it to ubiquitinylate securin and mitotic cyclins. 
C. A protease known as separase cleaves the cohesin subunit Scc1 (Rad21), breaking the protein circles linking sister chromatids.
D. anaphase begins as poleward force exerted on the kinetochores moves the split sister chromatids toward opposite spindle poles.
E. Following securin degradation and a decrease in mitotic CDK activity.
Which of the following series is correct?