Q: Which of the following best describes the central dogma of molecular biology?

$$\text{DNA} \rightarrow \text{mRNA} \rightarrow \text{Protein}$$

Question 1

Which of the following statements best describes the main difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells contain membrane-bound organelles, whereas prokaryotic cells do not.

Question 2

Which organelle is primarily responsible for the synthesis of ATP via the electron transport chain in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 3

A scientist discovers a unicellular organism with a cell wall made of chitin, which absorbs nutrients from decaying matter. To which group does this organism most likely belong?

Accepted Answer

Fungi

Question 4

Which of the following is NOT a function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

Synthesis of ATP

Question 5

Which structure is responsible for organizing chromosomes during mitosis and meiosis in eukaryotic cells?

Accepted Answer

Centrosome

Question 6

A patient is diagnosed with a disease caused by a protozoan that uses an apical complex to penetrate host cells. Which disease is most likely involved?

Accepted Answer

Malaria

Question 7

Which of the following best describes the central dogma of molecular biology?

Accepted Answer

$$	ext{DNA} ightarrow 	ext{mRNA} ightarrow 	ext{Protein}$$

Question 8

Which of the following eukaryotic cell structures is directly involved in the breakdown of hydrogen peroxide, a toxic byproduct of metabolism?

Accepted Answer

Peroxisome

Question 9

A marine biologist observes a sudden increase in neurotoxin levels in coastal waters, causing fish kills and shellfish poisoning. Which group of eukaryotic microbes is most likely responsible?

Accepted Answer

Dinoflagellates

Question 10

Which of the following statements about fungal hyphae is correct?

Accepted Answer

Aseptate hyphae have no cell separation, forming a continuous mass of cytoplasm.

Question 11

Which of the following is a distinguishing feature of eukaryotic flagella compared to prokaryotic flagella?

Accepted Answer

Eukaryotic flagella are composed of tubulin and move by undulation.

Question 12

Which of the following best explains why viruses are not classified as living organisms?

Accepted Answer

They lack cellular structure and cannot reproduce independently.

Question 13

A researcher is studying a eukaryotic cell that is unable to synthesize lipids. Which organelle is most likely malfunctioning?

Accepted Answer

Smooth endoplasmic reticulum

Question 14

Which of the following is a function of the cytoskeleton in eukaryotic cells?

Accepted Answer

Maintaining cell shape and facilitating movement

Question 15

Which of the following best describes the role of mycorrhizae in terrestrial ecosystems?

Accepted Answer

They increase the surface area for plant roots to absorb water and minerals.

Question 16

Which of the following is a correct example of binomial nomenclature?

Accepted Answer

Homo sapiens

Question 17

A patient presents with symptoms of amoebic dysentery. Which group of eukaryotic microbes is most likely responsible?

Accepted Answer

Amoebozoans

Question 18

Which of the following is a characteristic of protozoans?

Accepted Answer

They are unicellular, lack a cell wall, and are motile.

Question 19

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

Accepted Answer

They contain digestive enzymes to break down nutrients and worn-out organelles.

Question 20

Which of the following is a real-world example of the importance of fungi in human society?

Accepted Answer

Production of antibiotics such as penicillin

Eukaryotic Cells and Microorganisms: Structure, Function, and Diversity - Micro L 2

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