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 Blank

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 Blank

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 Blank

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 Blank

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.