I think it's d but I'm not sure!!
Rocks are made up of minerals
Yes it is possible to break a mixture of cornstarch and water
Facilitated diffusion is the term
given for passive transport of molecules or ions across a biological membrane, facilitated
by transport proteins. The molecules or ions move down a concentration
gradient; therefore, no chemical energy is required and no ATP hydrolysis is
needed. The transport proteins may be responsible for carrying larger molecules
across the membrane by changing their conformation, or water-soluble transport
proteins may carry non-polar molecules with poor water solubility across. Since
no energy is involved in the diffusion, options a) and c) are incorrect. Since
the molecules being carried are not altered in any way, option d) is incorrect.
Option b) ‘transport proteins provide a hydrophilic route for the solute to
cross the membrane’ is correct as water-soluble carrier proteins are able to facilitate
the diffusion of non-polar molecules with poor water solubility.
