I just started this survey i got to number 5 and i have no idea how to do it.​

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water. b. they use chlorophyll and oxygen to make carbon dioxide and water. c. they use sunlight, water, and carbon dioxide to make sugars. d. they use sunlight, water, and oxygen to make chlorophyll.