Biology

Octopus belongs to the class________.

• Mollusca

• Pelecypoda

• Cephalopoda

• None of the above

What is true of a prokaryotic cell?

• they have a nucleus

• they are NOT condiered to be alive

• they reproduce by binary fission

• they do not have a cell wall

collects, processes, and packages proteins for the cell

• mitochondria

• gogli apparatus

• smooth ER

• rough ER

Examine the cell diagrams shown. Which of the following choices identifies the eukaryotic cell for the correct reason?

• Cell A, because it is a single cell
• Cell A, because a nuclear membrane contains the cell’s DNA
• Cell B, because it is much smaller
• 
  Cell B, because it contains genetic material

The spherical object within a cell that controls its activity is the _____.

• mitochondria

• nucleus

• ribosome

• membrane

______ make protein for the cell.  

• Nuclei
• Ribosomes
• Endoplasmic reticulum
• Vacuoles 

Which type of tissue is responsible for the movement of body parts?

• Connective
• Muscle
• Nervous
• Epithelial

Which of these can only be found in a plant cell?

•  A nucleus
• A vacuole
• A chloroplast
• A mitochondrion

Why is the nucleus important? 

• It give the cell its energy
• It stores genetic information
• It uses sunlight for food
• It makes the proteins

Directs all cell activities through the DNA located there.

• Lysosomes
• Nucleus
• ribosomes
• Mitochondria