You view a group of cells underneath an electron microscope. immediately, you identify the cell membrane and mitochondria. what can you conclude about these cells?

a.
they are animal cells because they contain mitochondria.

b.
they are animal cells because they contain a cell membrane.

c.
they are plant cells because they contain a cell membrane.

d.
you cannot conclude that they are plant or animal cells. both types of cells contain both a cell membrane and mitochondria.

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.