#Question id: 4128
#Unit 3. Fundamental Processes
Which of the following statements about tRNA molecules is false?
#Question id: 804
#Unit 1. Molecules and their Interaction Relevant to Biology
With respect to microRNAs, which, if any, of the following statements, is false?
a) A microRNA normally works by binding to perfectly complementary sequences within an RNA transcript, usually an mRNA.
b) Like the great majority of mRNAs an miRNA is usually produced as a larger precursor RNA that is capped and has a 3’ poly(A) tail.
c) The precursor miRNA undergoes different types of post-transcriptional cleavage by endoribonucleases that are specific for double-stranded target sequences.
d) A nuclear endoribonuclease called dicer cleaves the miRNA precursor so that it forms a stem-loop RNA.
#Question id: 2934
#Unit 2. Cellular Organization
Cyclin D/Cdk4 functions during:
#Question id: 7756
#Unit 5. Developmental Biology
#Question id: 741
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of following statements are INCORRECT about secondary structure of proteins
A. Long block of Glu residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation below its pKR value
B. Long block of Lys residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation above its pKR value
C. Long block of Ala residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation below its pKR value
D. Histidine side chain remain uncharged over pH range 3-6