NEED HELP ON EXAM
Which element is necessary to form a protein molecule but not a carbohydrate
molecule?
Question 3 options:

A. carbon

b. nitrogen

c. oxygen

d. hydrogen

How are prokaryotic and eukaryotic cells similar?
Question 7 options:

A. Both contain cell walls.

B. Both contain a nucleus

C. Both contain ribosomes

D. Both contain membrane-bound organelles.

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.