Question 1

Which of the following statements best describes the main difference between the reproduction of eukaryotes and prokaryotes?

Accepted Answer

Eukaryotes have more complicated reproductive processes, often involving nuclear division and the formation of gametes and zygotes, whereas prokaryotes typically reproduce by binary fission.

Question 2

A protozoan is observed to have two equal-sized nuclei, multiple flagella, and lacks canonical mitochondria. Which group does it most likely belong to?

Accepted Answer

Diplomonadida

Question 3

Which of the following is a correct pairing of a protozoan group and a disease it causes in humans?

Accepted Answer

Amoebozoa – Acanthamoeba keratitis

Question 4

Which of the following best explains why algae can inhabit deep parts of the photic zone in aquatic environments?

Accepted Answer

They possess accessory photosynthetic pigments that trap energy from short-wavelength light.

Question 5

A scientist isolates a unicellular, eukaryotic organism from a freshwater pond. It lacks a cell wall, is motile by flagella, and absorbs nutrients by phagocytosis. Which group does this organism most likely belong to?

Accepted Answer

Protozoa

Question 6

Which of the following statements about fungal nutrition is correct?

Accepted Answer

Fungi acquire nutrients by absorption and most are aerobic.

Question 7

Which of the following is a distinguishing feature of the Division Basidiomycota among fungi?

Accepted Answer

They produce basidiocarps, which are fruiting bodies like mushrooms.

Question 8

A patient presents with bloody diarrhea. Microscopic examination reveals a eukaryotic organism with lobe-shaped pseudopods. Which organism is most likely responsible?

Accepted Answer

Entamoeba histolytica

Question 9

Which of the following best describes the ecological significance of fungi?

Accepted Answer

They decompose dead organisms and recycle nutrients in ecosystems.

Question 10

Which of the following is a correct statement about the classification of eukaryotic organisms?

Accepted Answer

Modern classification relies more on similarities in nucleotide sequences.

Question 11

Which of the following is a correct description of a lichen?

Accepted Answer

A lichen is a partnership between a fungus and a photosynthetic microbe, where the fungus provides nutrients, water, and protection.

Question 12

Which of the following best explains why diatoms are ecologically important?

Accepted Answer

They are a major source of the world’s oxygen and a component of marine phytoplankton.

Question 13

A patient is diagnosed with trichomoniasis. Which of the following characteristics would you expect to find in the causative organism?

Accepted Answer

Presence of a parabasal body and lack of canonical mitochondria.

Question 14

Which of the following is a correct statement about the reproduction of protozoa?

Accepted Answer

Most protozoa reproduce asexually by binary fission or schizogony, but some also reproduce sexually.

Question 15

Which of the following is a correct pairing of an algal group and a unique feature?

Accepted Answer

Rhodophyta – red pigment phycoerythrin and storage of glycogen

Question 16

Which of the following best describes the role of arthropod vectors in disease transmission?

Accepted Answer

They carry pathogens, either mechanically or biologically, and transmit them to hosts.

Question 17

A researcher is studying a marine organism with ornate silica shells and threadlike pseudopods. To which group does this organism most likely belong?

Accepted Answer

Rhizaria (Radiolaria)

Question 18

Which of the following is a correct statement about the morphology of fungi?

Accepted Answer

Fungi can be molds with hyphae, yeasts that are single-celled, or dimorphic, changing form based on environmental conditions.

Question 19

Which of the following best describes the difference between mechanical and biological arthropod vectors?

Accepted Answer

Mechanical vectors carry pathogens on their body surface without being infected, while biological vectors are infected and transmit pathogens through their bite or feces.

Characterizing and Classifying Eukaryotes: Protozoa, Algae, Fungi, and Parasitic Helminths

Study Guide - Practice Questions

Study Guide - Flashcards