Answer:
I guess the correct answer is option B
The correct answer is: A. The hydrophilic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophobic tails form an oily layer inside the membrane that keeps water out of the cell.
Plasma membrane of the cell is arranged in a bilayer of phospholipids. Phospholipids are amphipathic molecules which means that they have both hydrophilic and hydrophobic regions. The hydrophilic heads of phospholipids that are faced outward and hydrophobic layer located in the interior of the bilayer together make a good barrier between the interior and exterior of the cell, so the water and other polar or charged substances cannot easily cross the hydrophobic core of the membrane.
The correct answer is that the beaks would increase - this is the adaptation of finches to the new conditions (drought).
Beak depth varies according to drought conditions. Since after the drought vegetation dries out and the hard, big, tough seeds remain, only the finches with deep beaks will survive. Finches adapt via their beaks to different foods sources and different local conditions.
This process happens when the water around it is too warm
Answer:
Transgenic bacteria can be described as bacteria which have a foreign gene inserted into their genome. The genetically modified bacteria are helpful to humans in a number of ways. Some of these are:
- Production of human proteins especially for medicines.
- Production of herbicide and pesticide resistant genes so that the crop production is enhanced.
- transgenic bacteria are used for bioremediation as they break down contaminants.
- For producing amino acids which benefit the humans.
