Answer: C
The substance that must come through the cell membrane for the cell to live is nutrients. Cells would die if they did not get nutrients. Nutrients are what keeps the cell running.
The environmental lesson that you can derive from the ecocide hypothesis for what happened to Easter Island is that D. climate changes have environmental consequences for all inhabitants of an environment.
Answer:
D
Explanation:
Even when equilibrium is reached, particles of a solution will continue to move across the membrane in both directions. However, because almost equal numbers of particles move in each direction, there is no further change in concentration. Hope i did it right _-_
Answer:
a) Ubiquitin is a relatively small protein that is widely expressed in eukaryotic cells.
b) It is covalently attached to target proteins in an ATP-dependent reaction. d) Target selection is determined by ubiquitin-protein ligases.
Explanation:
Ubiquitin is a small and highly conserved eukaryotic protein. It is involved in targeting an intracellular protein for degradation by proteasomes. For the purpose, ubiquitin is ligated to the target protein that is to enter proteolytic degradation. The ubiquitin molecules are covalently attached to a Lys residue in the target protein.
Ligation of ubiquitin to the lysine residue of the target protein is mediated by a ubiquitinating enzyme which in turn uses ATP as a source of energy. For example, inactivation of the active cyclin-CDK complex is carried out by ligation of several molecules of ubiquitin. The ligation is triggered by specific recognizing proteins that recruit the ubiquitin ligase to add ubiquitin to the cyclin-CDK complex to target it for destruction by proteasomes.
If one of your anscestors had a genetic birth defect in their blood, the chances of your child having that aswell are present.
