Which form of cell transport allows small molecules to move from an area of higher concentration to an area of lower concentration without energy being required from the cell?

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar

How do disease caused by bacteria and disease caused by viruses react to antibiotics?