Question 1

Which of the following best describes the endosymbiotic theory as it relates to the evolution of eukaryotes?

Accepted Answer

Eukaryotes evolved when ancestral eukaryotic cells merged with certain prokaryotic cells, leading to organelles like mitochondria and chloroplasts.

Question 2

Which of the following is NOT a difference between eukaryotic and prokaryotic cells?

Accepted Answer

Eukaryotic cells always have a cell wall made of peptidoglycan, while prokaryotic cells do not.

Question 3

Which of the following kingdoms is NOT classified as a eukaryote?

Accepted Answer

Bacteria

Question 4

Which statement correctly describes the main groups of parasitic helminths?

Accepted Answer

Cestodes are segmented flatworms, and nematodes are unsegmented roundworms.

Question 5

A patient presents with a fungal infection characterized by white patches in the mouth. Which group of fungi is most likely responsible, and what is the likely genus?

Accepted Answer

Ascomycetes; Candida

Question 6

Which of the following best describes the function of the eukaryotic glycocalyx?

Accepted Answer

It is a sticky extracellular layer involved in cell recognition and communication.

Question 7

Which of the following statements about eukaryotic flagella is TRUE?

Accepted Answer

Eukaryotic flagella move in a whip-like fashion and are composed of microtubules.

Question 8

Which of the following best explains why fungal infections are more difficult to treat than bacterial infections?

Accepted Answer

Fungi are eukaryotic and share more similarities with human cells, making selective toxicity harder to achieve.

Question 9

Which of the following is a correct match between a eukaryotic organelle and its function?

Accepted Answer

Golgi apparatus: modifies and packages proteins

Question 10

A scientist is studying a unicellular organism with a nucleus, mitochondria, and cell wall made of cellulose. To which kingdom does this organism most likely belong?

Accepted Answer

Plantae

Question 11

Which of the following statements about protozoa is correct?

Accepted Answer

Protozoa are classified into groups based on their method of movement, such as pseudopodia, flagella, or cilia.

Question 12

Which of the following best describes the structure of eukaryotic plasma membranes?

Accepted Answer

They have a phospholipid bilayer and serve as a selective barrier.

Question 13

Which of the following equations correctly represents the general formula for the production of ATP in mitochondria during aerobic respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + ATP$$

Question 14

Which of the following is a function of the rough endoplasmic reticulum in eukaryotic cells?

Accepted Answer

Protein synthesis

Question 15

A sample contains a eukaryotic cell with a cell wall, chloroplasts, and a large central vacuole. Which kingdom does this cell most likely belong to?

Accepted Answer

Plantae

Question 16

Which of the following best describes the role of the nucleolus in a eukaryotic cell?

Accepted Answer

It is the site of ribosomal RNA (rRNA) synthesis.

Question 17

Which of the following is a distinguishing feature of basidiomycetes among fungi?

Accepted Answer

They produce sexual spores on a pedestal structure called the basidium.

Question 18

Which of the following best explains why protozoan infections can be difficult to treat in humans?

Accepted Answer

Protozoa are eukaryotic and share many cellular features with human cells.

Question 19

Which of the following statements about eukaryotic ribosomes is correct?

Accepted Answer

They are found free in the cytoplasm or bound to the rough endoplasmic reticulum.

Question 20

A patient is diagnosed with athlete's foot, a fungal infection. Which of the following best describes the causative agent?

Accepted Answer

A fungus that produces hyphae and spores.

Eukaryotes: Structure, Classification, and Key Features

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