Answer:
C
Explanation:
A toboggan is a simple sled traditionally used by children. It is well adapted to sliding down open slopes, where its large surface rides easily on loose, fluffy snow.
Answer:
A
Explanation:
Geothermal power plants, which use heat from deep inside the Earth to generate steam to make electricity.
Answer:
The ecosystem will change, maybe, there might be some problems, like some animals will start to die by being food for the alien species, or it might progress more.
Explanation:
Answer:
B
Explanation:
To begin with, it is clear that this cell has a cell wall (the rigid cubicle like structure around the cell). Only plants (that can carry out photosynthesis) have a cell wall. Secondly, one can view the chloroplasts in the cell (the organelles with green pigments inside). This is where photosynthesis takes place in the cell.
Answer:
An operon consists of a group of genes which are controlled by a single promoter.
The lac operon present in the E.coli comprises of genes for making proteins which breakdown lactose into glucose.
Normally, the lac operon will be turned of by a repressor when there is not enough lactose present.
When lactose is present in the cell, the operon is activated when lacl forms a bond with the promoter region due to its changes in the structure. This causes the process of transcription to occur.
