Question 1

Which of the following best explains the endosymbiotic theory for the origin of mitochondria in eukaryotic cells?

Accepted Answer

Mitochondria originated from bacteria that were engulfed by ancestral eukaryotic cells and became permanent residents.

Question 2

Which of the following characteristics is shared by both mitochondria and chloroplasts, supporting their endosymbiotic origin?

Accepted Answer

Circular DNA and 70S ribosomes

Question 3

Which eukaryotic structure is responsible for modifying, packaging, and transporting proteins, and is closely associated with the endoplasmic reticulum?

Accepted Answer

Golgi apparatus

Question 4

A scientist observes a eukaryotic cell with a thick, rigid outer layer composed mainly of chitin. This cell most likely belongs to which group?

Accepted Answer

Fungi

Question 5

Which of the following is NOT a function of the eukaryotic cytoskeleton?

Accepted Answer

Synthesizing proteins

Question 6

Which of the following best describes the difference between eukaryotic and prokaryotic flagella?

Accepted Answer

Eukaryotic flagella are covered by an extension of the cell membrane and have a 9+2 arrangement of microtubules.

Question 7

A patient is diagnosed with a fungal infection acquired from contaminated soil. Which term best describes the nutritional strategy of the fungus involved?

Accepted Answer

Saprobic

Question 8

Which of the following statements about fungal spores is correct?

Accepted Answer

Fungal spores are reproductive bodies that can be formed sexually or asexually.

Question 9

Which of the following is a correct sequence for the transport of proteins in a eukaryotic cell?

Accepted Answer

Nucleus → Rough ER → Golgi apparatus → Vesicles

Question 10

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

Accepted Answer

Intracellular digestion and protection against invading microorganisms

Question 11

A protozoan is observed to move using short, numerous appendages that beat in a coordinated fashion. Which structure is responsible for this movement?

Accepted Answer

Cilia

Question 12

Which of the following is a distinguishing feature of the trophozoite stage in protozoa?

Accepted Answer

It is the active, feeding stage requiring ample food and moisture.

Question 13

Which of the following is TRUE regarding the life cycle of helminths?

Accepted Answer

The definitive host is where adulthood and mating occur.

Question 14

Which of the following is a beneficial impact of fungi on human society?

Accepted Answer

Decomposing organic matter and producing antibiotics

Question 15

Which of the following statements about eukaryotic ribosomes is correct?

Accepted Answer

They are found in the cytoplasm, mitochondria, and chloroplasts.

Question 16

Which of the following best describes the main difference between tissues and organs in multicellular eukaryotes?

Accepted Answer

Tissues are composed of a single cell type, while organs are composed of multiple tissues working together.

Question 17

Which of the following is a correct statement about the glycocalyx in eukaryotic cells?

Accepted Answer

It is an extracellular matrix composed of polysaccharides that provides protection and adherence.

Question 18

Which of the following is a real-world example of a disease caused by a pathogenic flagellate protozoan?

Accepted Answer

African sleeping sickness

Question 19

Which of the following statements about the cell wall of fungi is correct?

Accepted Answer

It is composed of chitin or cellulose and provides structural support.

Question 20

Which of the following best describes the role of chloroplasts in algae?

Accepted Answer

They convert sunlight into chemical energy through photosynthesis.

Chapter 5: Eukaryotic Cells and Microorganisms: Structure, Function, and Diversity- Book Notes

Guida di studio - Domande di pratica

Study guide - Flashcard