An environmental change can lead to the production of more than the expected amount of cyclin in G1. This would tend to the activity of a CDK, which would lead to phosphorylation of the target protein, which in turn would lead to cells being stopped at the G1-to-S checkpoint.

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?