Cell Theory and Organelles Notes

Multiple Choice

Which of the following is NOT a part of the cell theory?

• All living things are made of cells.

• Cells are the basic unit of life.

• All cells come from other cells.

• Cells can spontaneously generate from non-living matter.

Multiple Choice

Which of the following best describes a multicellular organism?

• Composed of one cell

• Composed of many cells that may organize into tissues, organs, and organ systems

• Composed only of tissues

• Composed only of organ systems

Multiple Select

Which of the following are true about prokaryotic cells?

• They have a nucleus

• They divide by binary fission

• They are always unicellular

• They have membrane-bound organelles

Multiple Choice

Which structure is found only in eukaryotic cells but not in prokaryotic cells?

• Cell membrane

• Ribosomes

• Nucleus

• Cytoplasm

Fill in the Blanks

All cells have genetic material, cytoplasm, cell membrane, and

.

Multiple Choice

What is the main function of the cell (plasma) membrane?

• It controls what goes in and out of the cell.

• It produces energy for the cell.

• It stores genetic material.

• It provides structural support for the cell.

Multiple Select

Which of the following statements about the phospholipid bilayer are correct?

• It is made of two layers of fats called phospholipids.

• The heads are hydrophilic and the tails are hydrophobic.

• It is composed entirely of proteins.

• It surrounds the outside of all cells.

Fill in the Blanks

The cytoskeleton is made of threadlike fibers composed of

.

Multiple Choice

What is the primary job of the cytoplasm in a cell?

• It holds everything in place.

• It controls what goes in and out of the cell.

• It protects the DNA.

• It provides structural support.

Multiple Choice

Which organelle contains genetic material and is surrounded by a nuclear envelope with pores?

• Nucleus

• Cytoplasm

• Cell membrane

• Cytoskeleton

Multiple Choice

Which organelle is responsible for making rRNA, and where is it located within the cell?

• Nucleolus, inside the nucleus

• Ribosome, in the cytoplasm

• Golgi apparatus, near the membrane

• Smooth ER, attached to Rough ER

Multiple Choice

Which of the following statements about the Rough ER is correct?

• It has ribosomes on its surface and packages proteins for secretion.

• It makes lipids for the membrane.

• It contains enzymes for breaking down dead material.

• It is found only in prokaryotic cells.

Fill in the Blanks

The main function of the Golgi apparatus is to

, sort, and ship proteins where needed.

Multiple Select

Select all organelles that are involved in the production, processing, or transport of proteins.

• Rough ER

• Golgi apparatus

• Smooth ER

• Ribosomes

Multiple Choice

Which organelle is responsible for storing water, nutrients, and waste in cells?

• Vacuole

• Mitochondria

• Chloroplast

• Centrosome

Multiple Select

Which of the following statements about centrioles are correct?

• They are found only in animal cells.

• They help in cell division by pulling chromosomes apart.

• They are made of microtubules.

• They are present in plant cells.

Multiple Choice

What is the main function of cilia on the surface of animal cells?

• Move fluid across the cell's surface

• Store nutrients

• Produce energy

• Protect the cell

Fill in the Blanks

The organelle known as the 'powerhouse of the cell' is the

.

Multiple Choice

Which component is found in the cell wall of plants but not in bacteria?

• Cellulose

• Chitin

• Peptidoglycan

• Microtubules