6) Which of the following phrases describes the structure of the nucleus?
A.
an organelle surrounded by a double membrane
B.
a system of folded membranes that may be covered in ribosomes
C.
an organelle surrounded by a membrane and cell wall
D.
an organelle that has a folded inner membrane

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

No copying 15 pts how does a free-body diagram tell you about the net force on an object?