#Question id: 1393
#Unit 4. Cell Communication and Cell Signaling
In research on aging (both cellular aging and organismal aging), it has been found that aged cells do not progress through the cell cycle as they had previously. Which of the following, if found in cells or organisms as they age, would provide evidence that this is related to cell signalling?
#Question id: 19888
#Unit 13. Methods in Biology
There are some typical enzyme used in the manipulation of nucleic acid;
ENZYMES |
USE IN
NUCLEIC ACID MANIPULATION |
A) klenow |
i)
DNA-dependent RNA polymerase |
B) T4 DNA
polymerase |
ii)
Single-strand specific nuclease |
C) Taq DNA
polymerase |
iii) DNA pol
I lacks 5’→ 3’ exonuclease activity |
D) T7 RNA
polymerase |
iv)
Thermostable DNA polymerase used in PCR |
E) S1
nuclease |
v) Lack 5’→ 3’ exonuclease activity |
#Question id: 1343
#Unit 4. Cell Communication and Cell Signaling
Which of the following is not an example of a type of extracellular matrix?
#Question id: 24489
#Unit 3. Fundamental Processes
#Question id: 12598
#Unit 10. Ecological Principles