Unit 3

Multiple Choice

All cells share two characteristics. What are they?

• They all have a cell membrane and contain DNA at some point in their lives.

• They all have a nucleus and mitochondria.

• They all have a cell wall and chloroplasts.

• They all are multicellular and have ribosomes.

Fill in the Blanks

Fill in the blank: The

is a large membrane-enclosed structure that contains the cell’s genetic material – DNA.

Multiple Select

Which of the following statements about prokaryotic and eukaryotic cells are correct?

• Eukaryotic cells contain a nucleus.

• Prokaryotic cells have membrane-bound organelles.

• Prokaryotic cells do not contain a nucleus.

• Eukaryotic cells have genetic material separated from the rest of the cell.

Multiple Choice

What are the two major parts of a eukaryotic cell?

• Nucleus and cytoplasm

• Cell wall and membrane

• Mitochondria and ribosomes

• Chloroplast and vacuole

Fill in the Blanks

The fluid portion of the cell outside the nucleus is called the

.

Multiple Choice

Which part of a eukaryotic cell is most similar to the main office of a factory?

• Nucleus

• Cytoplasm

• Mitochondria

• Cell membrane

Multiple Select

Which of the following are functions of the nucleus in a cell?

• Stores DNA

• Controls cell activities

• Produces energy

• Sends instructions to the cell

Multiple Choice

What is the main function of chromatin within the nucleus?

• To store genetic information by binding DNA to proteins

• To assemble ribosomes

• To transport proteins throughout the cell

• To produce energy for the cell

Multiple Select

Which of the following statements about chromosomes are correct?

• They contain genetic information passed from one generation to the next

• They are visible under a microscope when the cell divides

• They are responsible for assembling ribosomes

• They are made of DNA bound to protein

Fill in the Blanks

The small, dense region found in most nuclei where the assembly of ribosomes begins is called the

.

Multiple Choice

What is the primary role of the endoplasmic reticulum in eukaryotic cells?

• To transport proteins and other materials

• To store genetic information

• To produce energy

• To assemble ribosomes

Multiple Choice

Why is the rough endoplasmic reticulum called 'rough'?

• Because of the ribosomes found on its surface

• Because it is chemically modified

• Because it produces lipids

• Because it is found only in animal cells

Multiple Choice

What is the main function of the smooth endoplasmic reticulum (smooth ER)?

• To form membrane lipids and detoxify drugs

• To synthesize proteins

• To store genetic information

• To produce energy

Fill in the Blanks

Proteins produced in the rough ER are bundled into tiny vessels called

that carry them to the Golgi apparatus.

Multiple Select

Which of the following statements about the Golgi apparatus are correct?

• It modifies, sorts, and packages proteins from the ER.

• It is responsible for producing ribosomes.

• It acts like the shipping department of a factory.

• It stores genetic material.

Multiple Choice

After proteins are processed in the Golgi apparatus, where can they be shipped?

• To their final destination inside or outside the cell

• Back to the nucleus

• To the mitochondria only

• To the lysosome only

Multiple Choice

What organelle makes it possible for plants to support heavy structures, such as leaves?

• Lysosomes

• Nucleus

• Vacuole

• Rough ER

Multiple Choice

Who do you get your mitochondria from?

• Your dad

• Your mom

• Your sister

• Your aunt

Multiple Choice

What protein filaments make up the cytoskeleton?

• Actin and tubulin

• Amino acids and nucleotides

• Carbs and Proteins

• Microfilaments and microtubules

Multiple Choice

What makes up microfilaments?

• Actin

• Microtubules

• Tubulins

• Chlorophyll

Multiple Choice

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

• All living things are composed of cells.

• Cells are the basic units of structure and function in living things.

• New cells are produced from existing cells.

• Cells can exist independently of living things.