Biology kingdom prokaryotic

Everything under kingdom prokaryotes

Quiz Type

Practice

Subject

Biology

Level

Level 100

Questions

10 questions

Created By

Emmanuella Acheampomaa Appiah

Quick Rules

Time limit: 50 minutes
Multiple attempts are not allowed
All questions must be answered to submit

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Question 1 of 10

Question 1

Basic multiple choice Remembering

What is the primary characteristic that defines prokaryotes?

They have a nucleus

They are single-celled organisms

Correct

They have membrane-bound organelles

They reproduce through meiosis

Explanation

Prokaryotes are primarily characterized as single-celled organisms that lack a nucleus and membrane-bound organelles.

Question 2

Basic multiple choice Remembering

Which of the following is an example of a prokaryotic organism?

E. coli

Correct

Mushroom

Unicorn

Rose bush

Explanation

E. coli is a well-known prokaryotic organism, whereas mushrooms and rose bushes are eukaryotic, and unicorns are mythical creatures.

Question 3

Basic multiple choice Remembering

How do prokaryotes typically reproduce?

Binary fission

Correct

Budding

Fragmentation

Sexual reproduction

Explanation

Prokaryotes typically reproduce asexually through a process called binary fission, not through sexual reproduction.

Question 4

Basic multiple choice Understanding

What is the genetic material of prokaryotes composed of?

Chromosomes and histones

Circular DNA and plasmids

Correct

Linear DNA only

RNA only

Explanation

Prokaryotes possess circular DNA and may also contain plasmids, whereas eukaryotes typically have chromosomes wrapped around histones.

Question 5

Basic multiple choice Understanding

Which of the following statements is true about prokaryotes?

They have complex internal structures

They lack a cell wall

They are generally smaller than eukaryotic cells

Correct

They are multicellular organisms

Explanation

Prokaryotes are generally smaller than eukaryotic cells and are primarily unicellular organisms, often characterized by their simpler structures.

Question 6

Complex multiple choice Understanding

A scientist is studying a new type of bacteria discovered in a hot spring. Which characteristic would most clearly indicate that this organism belongs to the kingdom Prokaryotes?

It has a membrane-bound nucleus.

It lacks membrane-bound organelles.

Correct

It has a complex cellular structure.

It reproduces through mitosis.

Explanation

Prokaryotes are characterized by their lack of membrane-bound organelles and a membrane-bound nucleus. Therefore, the presence of this bacterium lacking these features aligns with its classification as a prokaryote. The other options are characteristics of eukaryotic cells.

Question 7

Complex multiple choice Understanding

In a project, a group of students is comparing prokaryotic and eukaryotic cells. They conclude that prokaryotic cells must be less complex than eukaryotic cells due to their size. What common misconception might lead them to this conclusion?

Complexity is solely determined by size.

Correct

Prokaryotic cells do not perform any specialized functions.

All prokaryotes are unicellular and all eukaryotes are multicellular.

Eukaryotic cells are always larger than prokaryotic cells.

Explanation

The misconception is that complexity is only determined by size, which is not accurate; prokaryotic cells can perform various complex biochemical processes despite being smaller. The other options reflect inaccuracies regarding cellular functions and classifications that do not contribute to the comparison of complexity.

Question 8

Case based multiple choice Understanding

[Case Scenario] A microbiologist is studying various bacterial colonies found in a hot spring. Among the observations made during the study, it is noted that one particular bacterium thrives at extremely high temperatures and has distinct morphological characteristics that set it apart from other bacteria. Question: Based on the characteristics of the bacterium described, how might it be classified within the kingdom Prokaryotes?

It is likely classified as a thermophile due to its ability to thrive in high temperatures.

Correct

This bacterium is likely a cyanobacterium because it is found in water.

It could be classified as a halophile since it is found in a specific environmental niche.

This organism is likely an archaebacterium because of its unique morphological characteristics.

Explanation

The case describes a bacterium that thrives in high-temperature environments, which aligns with the characteristics of thermophiles, a group within prokaryotes. The distractors offer plausible but incorrect classifications based on potential environmental adaptations rather than temperature tolerance.

Question 9

Case based multiple choice Understanding

[Case Scenario] A researcher finds a new species of bacteria isolated from the gut of a cow. Genetic analysis reveals that this bacterium has a single circular chromosome and lacks a membrane-bound nucleus, a defining feature of prokaryotes. Question: What can we infer about the classification of this new bacterium based on its genetic characteristics?

The bacterium is classified as a prokaryote due to its single circular chromosome and lack of a nucleus.

Correct

It is likely classified as a eukaryote because it resides in a complex organism.

This bacterium is a virus because it is found in an animal host.

The organism probably belongs to fungi since it is isolated from the gut of a cow.

Explanation

The genetic analysis of the bacterium indicates it has prokaryotic features, specifically being a single-celled organism without a nucleus. This evidence directly supports its classification as a prokaryote. The other options misinterpret the genetic characteristics needed for classification.

Question 10

Case based multiple choice Understanding

[Case Scenario] During a research expedition, a biologist examines a colony of bacteria that were found in the acidic environment of an abandoned mine. The biologist notes that these bacteria survive in pH levels that would be lethal to most known life forms, and they play a crucial role in the biogeochemical cycle of metals. Question: How should these bacteria be classified within the kingdom Prokaryotes based on their ability to survive in extreme conditions?

These bacteria are likely classified as acidophiles because they thrive in acidic environments.

Correct

They are probably classified as alkaliphiles since they interact with metals.

These are likely methanogens given their role in biogeochemical cycles.

This bacterium would be classified as a halophile, as it is found in a unique niche.

Explanation

The bacteria's adaptation to highly acidic conditions identifies them as acidophiles, a subset within prokaryotes. This ability to perform essential biogeochemical processes in such conditions underscores their ecological significance. The distractors represent alternative adaptations that don't apply to the described scenario.