Answer:
B) Available energy decreases as trophic levels increase.
Explanation:
Each time an organism consumes energy, it absorbs it. When it dies the energy is released and only some of it is consumed the organism that eats the first organism. This continues and by the end there is very little energy left because most of it was released into the world.
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.
I think it’s B I’m not sure
The following statements are true about the modification of chromatin structures in the eukaryotes:
1. Melthylation of histone tails in chromatin can promote condensation of the chromatin.
2. DNA is not transcribed when chromatin is package tightly in a condensed form.
3. Acetylation of histone tails in chromatin allows access to DNA for transcription.
4. Some form of chromatin modifications can be passed on to future generation of cells.
5. Acetylation of histone tails is a reversible process.
