Me! which of the following statements about passive transport is true? choose 1 a) membrane proteins are always needed. b) passive transport refers only to the movement of c) energy input is required. d) substances move along their concentration gradients.

The real answer is Di had this question as well and got it wrong to find out it was really D

Explanation:

Hope u get it right next time :)

dz nuts.   eeneneneeenenne

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.