Which of the following statements describes integral membrane proteins?
i. they protect the contents of the cell from chaotropic agents such as urea.
ii. they are easily dissociated from the membrane by changes in ph or high salt concentration.
iii. they are held tightly in place by hydrophobic effects between the membrane and hydrophobic amino acids.

The correct answer is option - C.

Explanation:

Integral proteins are integrated proteins that are extended into the cytoplasm from the outer side of the cell. As it is known bilipid layer is fluid in nature it move around the cell layer.

These are the proteins also known as intrinsic proteins that contain parts with the side chains that are hydrophobic in nature. These are tightly located or packed between the hydrophobic amino acids and the membrane due to hydrophobic effects.

Thus, the correct answer is - option C.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)