#Question id: 847
#Unit 1. Molecules and their Interaction Relevant to Biology
A proposed pathway for the action of E.coli chaperonins are groEL and groES.groEL exist in trans and cis structure transferring with its bound ATP now become the cis ring once the groES bound to it ATP hydrolysis takes place and improperly folded protein get properly folded, total number of ATP molecules are required to per folding cycle;
#Question id: 2240
#Unit 2. Cellular Organization
In which of the following cases is energy NOT needed for transmembrane transport?
a. Lysine moves into the cell against its concentration gradient via the Na+/lysine symporter.
b. Potassium ions (K+) move out of the cell down the K+ concentration gradient via potassium channels.
c. Glucose moves into the cell down its concentration gradient via a glucose uniporter.
d. Sodium ions (Na+) move out of the cell down the Na+ concentration gradient via sodium channels.
Which of the following are correct?
#Question id: 5539
#Unit 5. Developmental Biology
When does neurulation occur during human pregnancy?
#Question id: 2401
#Unit 2. Cellular Organization
Which organelle often takes up much of the volume of a plant cell?
#Question id: 12004
#Unit 10. Ecological Principles
The figure above shows the distribution of 10 plant species that grow along a regular environmental gradient, such as depth of the water table in a river valley. All other environmental factors are similar. This figure demonstrates that
