Question 1

Which of the following statements best explains why prokaryotic DNA is supercoiled, as shown in the provided images?

Accepted Answer

Supercoiling enables the DNA to fit within the limited space of the prokaryotic cell.

Question 2

A scientist observes a cell with a large central vacuole, chloroplasts, and a cell wall composed primarily of cellulose. Which type of cell is being observed?

Accepted Answer

Plant cell

Question 3

Which organelle is responsible for the synthesis of proteins that are destined to be secreted from the cell?

Accepted Answer

Rough endoplasmic reticulum

Question 4

A mutation prevents the formation of the nuclear localization signal (NLS) on a protein. What is the most likely consequence for this protein?

Accepted Answer

It will remain in the cytosol.

Question 5

Which of the following best describes the function of lysosomes in animal cells?

Accepted Answer

Digestion and waste processing

Question 6

A cell is observed to have an abundance of smooth endoplasmic reticulum. Which function is this cell most likely specialized for?

Accepted Answer

Synthesis of lipid-soluble molecules such as steroid hormones

Question 7

Which of the following processes is described as the cell engulfing large particles or cells, forming a vesicle that later fuses with a lysosome for digestion?

Accepted Answer

Phagocytosis

Question 8

What is the primary function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

Processing, sorting, and shipping proteins

Question 9

A protein is synthesized on a free ribosome in the cytosol and contains a mitochondrial targeting sequence. Where will this protein most likely end up?

Accepted Answer

In the mitochondrial matrix

Question 10

Which of the following best explains why plant cells contain both mitochondria and chloroplasts?

Accepted Answer

Mitochondria produce ATP through cellular respiration, while chloroplasts convert light energy to chemical energy via photosynthesis.

Question 11

Which of the following statements about the cytoskeleton is correct?

Accepted Answer

It is composed of protein fibers and provides structural support and aids in cell movement.

Question 12

A protein is found embedded in the plasma membrane and functions as a receptor. Which pathway did this protein most likely follow during its synthesis and sorting?

Accepted Answer

Synthesized on rough ER-bound ribosomes, processed in the Golgi apparatus, and delivered to the plasma membrane via vesicles

Question 13

Which of the following is a unique feature of eukaryotic cells compared to prokaryotic cells?

Accepted Answer

Presence of a membrane-bound nucleus

Question 14

A cell is observed to have a large number of peroxisomes. Which metabolic process is this cell likely specialized for?

Accepted Answer

Breakdown of very long fatty acid chains

Question 15

Which of the following best describes the fate of a protein lacking an endoplasmic reticulum (ER) signal sequence?

Accepted Answer

It is released into the cytosol.

Question 16

Which process involves the recycling of a cell’s own organelles by enclosing them in a membrane and delivering them to the lysosome for degradation?

Accepted Answer

Autophagy

Question 17

A mutation disrupts the function of the Golgi apparatus in a pancreatic cell. Which of the following is the most likely consequence?

Accepted Answer

The cell will be unable to process and secrete digestive enzymes efficiently.

Question 18

Which of the following is a function of the large central vacuole in plant cells?

Accepted Answer

Storage of water and ions to maintain cell volume

Question 19

Which of the following best describes the role of the nuclear pore complex?

Accepted Answer

It allows selective transport of molecules into and out of the nucleus.

Inside the Cell: Structure and Function of Cellular Components

Guida di studio - Domande di pratica

Study guide - Flashcard