Passive transport is the movement of molecules across a membrane without the use of energy. What cause the molecules to move? 1. Molecules move inside a cell to interact with organelles
2. Molecules move across a membrane to reach other cells
3. Molecules move from an area of relatively high concentration to an area of lower concentration
4. Molecules move from an area of relatively low concentration to an area of higher concentration

Modern computers can store about as much information as the human brain. true false its false i took the test

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other

Adding more tributaries to a local river basin can have what effect?