Question

which type of cell is considered complex with a nucleus and organelles? *
a) virus
b) prokaryote
c) eukaryote
d) bacteria

which process describes molecules moving from an area of high concentration to low concentration without energy? *
a) diffusion
b) active transport
c) endocytosis
d) exocytosis

Explanation:

First Question:

• Viruses are not cells.
• Prokaryotes (like bacteria) lack a nucleus and membrane - bound organelles.
• Eukaryotes have a nucleus and membrane - bound organelles, making them complex cells.

Second Question:

• Diffusion is the passive movement (no energy required) of molecules from high to low concentration.
• Active transport needs energy and moves molecules against the concentration gradient.
• Endocytosis and exocytosis are active transport processes involving vesicle movement and also require energy.

Answer:

C) Eukaryote