#Question id: 728
#Unit 1. Molecules and their Interaction Relevant to Biology
Match the following tile peaks with corresponding circular dichroism spectra
|
A. Alpha helix |
I. negative bands at 222 nm and 208 nm and a positive one at 190 nm. |
|
B. Beta sheet |
II. negative band at 218 nm and a positive one at 196 nm. |
|
C. Random coil |
III. positive band at 212 nm and a negative one around 195 nm. |
#Question id: 11150
#Unit 7. System Physiology – Animal
Use the information in the table to answer the question.
Calculate the equilibrium potential for potassium. Assume a temperature of 37°C.
#Question id: 29480
#Unit 6. System Physiology – Plant
Which of the following hormone Enhance Cell Wall Extensibility without Acidification
#Question id: 805
#Unit 1. Molecules and their Interaction Relevant to Biology
miRNAs are encoded in the genome as segments of longer transcripts. Their characteristic structure helps identify them and predict the target genes they might regulate. Which of the following are the characteristic features of these small RNA molecules?
I. The functional form of an miRNA is typically 21 or 22 nucleotides (it can vary from 19 to 25 nucleotides).
II. The first cleavage liberates the stem-loop, called the pre-miRNA; the second generates the mature miRNA from the pre-miRNA.
III. The pre-miRNAs can be encoded by any part of a transcript: that is, they might fall within coding regions, within leader regions, or within Introns.
IV. The base pairing between miRNA and target RNA is initiated by interactions of so-called seed residues—the sequence between bases 2 and 9 of the 22-nucleotide miRNA.
#Question id: 23593
#Unit 13. Methods in Biology