Answer:
This lack of fossil data is expected, because the fossil record is incomplete.
Explanation:
Fossilization is a slow, complex and extremely rare process that depends on several favorable conditions for the conservation of traces or materials left by an organism:
1 - Rapid burial of the material;
2 - Presence of rigid parts that are more resistant to degradation;
3 - The type of sediment should be thin and less prone to erosion.
4 - The environment in which the material is located should be low in oxygen to avoid degradation due to oxidation.
5 - The temperature of the place where the material is buried should preferably be cold because the action of decomposing microorganisms in these environments is much lower.
Therefore, it is very common and expected that the fossil record is incomplete.
As polymers are to MONOMERS.......
Answer:
The reasons why Adenosine Triphosphate is a common energy source for all organisms is that: 1. It is a high-energy molecule 2. ATP has an unstable structure compared to other high-energy molecules. 3. ATP has higher potential to transfer phosphate group.
Explanation:
The transfer of phosphate group from high energy molecule like the adenosine triphosphate (ATP) usually release energy that is required by most of cellular activities, thus this dephosphorylation process is an exergonic reaction. While other molecules like the GTP can give energy, these molecules are more stable structurally and breaking them down will not by energetically wise, thus there is need to use a less stable high energy molecules like the ATP which have the potential of releasing their phosphate radical more easily. This is the reason why all organisms make use of the ATP molecule as the only energy source.
Answer:
Vimenin has no affect.
Cytochalasin interferes with actin filament formation;
Ccolchicine shows that microtubules are required to give a cell a polarity that the determines which end becomes the leading edge.
Explanation:
These observations suggest to me that
- Vimenin has no affect.
- Cytochalasin interferes with actin filament formation;
- Colchicine shows that microtubules are required to give a cell a polarity that the determines which end becomes the leading edge.
