#Question id: 4299
#Unit 3. Fundamental Processes
Lactate dehydrogenase (LDH) can exist as various tetrameric isozymes. Extracts from different rat tissues were run on a nondenaturing polyacrylamide gel and stained for LDH activity, as shown below. Standard tetramers of M subunits (M4) and H subunits (H4) were run alongside the tissue extracts. Which of the following is the subunit composition of the isozyme running at position 2 ?
#Question id: 4298
#Unit 3. Fundamental Processes
Insulin and other growth factors stimulate a pathway involving a protein kinase mTOR, which in its turn augments protein synthesis. mTOR essentially modifies protein(s) which in their unmodified form act as inhibitors of protein synthesis. The following protein is NOT possible candidate:
#Question id: 4297
#Unit 3. Fundamental Processes
Match the following decay mechanism
|
A. Matured translation |
1. Ribosome displaces all of the exon–junction complexes. |
|
B. nonsense-mediated mRNA decay |
2. Upf complex |
|
C. nonstop-mediated decay |
3. eRF1 and eRF3 |
|
D. no-go decay |
#Question id: 3848
#Unit 3. Fundamental Processes
are small molecules that function as adapters between amino acids and codons.
#Question id: 3849
#Unit 3. Fundamental Processes
Which of the following is short 20 to 22-nucleotide single-stranded RNAs that block the expression of complementary or partially complementary mRNAs.
#Question id: 3850
#Unit 3. Fundamental Processes
The RNA molecule produced in RNA synthesis is: