BIO 101 prokaryotes

Prokaryotes

Quiz Type

Practice

Subject

Biology

Level

Level 100

Questions

10 questions

Created By

Vincentia Adjah

Quick Rules

Time limit: 10 minutes
Multiple attempts are not allowed
All questions must be answered to submit

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Question 1 of 10

Question 1

True false Understanding

Prokaryotes are organisms that lack a true nucleus.

True

Correct

False

Explanation

This statement is true because prokaryotes, which include bacteria and archaea, do not have a membrane-bound nucleus. Instead, their genetic material is located in a region called the nucleoid.

Question 2

True false Understanding

All prokaryotes are multicellular organisms.

True

False

Correct

Explanation

This statement is false because prokaryotes are primarily unicellular organisms. While some can form colonies, they do not exhibit true multicellularity like eukaryotes.

Question 3

True false Understanding

Prokaryotes reproduce primarily through a process called binary fission.

True

Correct

False

Explanation

This statement is true because binary fission is the asexual reproduction method used by prokaryotes, allowing them to divide and form two identical daughter cells.

Question 4

Assertion reason Analyzing

Assertion (A): Prokaryotes are unicellular organisms without a membrane-bound nucleus. Reason (R): The absence of a membrane-bound nucleus allows prokaryotes to reproduce more quickly than eukaryotes.

Both A and R are true, and R is the correct explanation of A

Correct

Both A and R are true, but R is NOT the explanation of A

A is true but R is false

A is false but R is true

Explanation

Prokaryotes being unicellular alongside the lack of a membrane-bound nucleus contributes to their simple and rapid reproduction, thereby allowing them to reproduce more quickly than eukaryotes. This makes both statements true, with the reason correctly explaining the assertion.

Question 5

Basic multiple choice Remembering

What type of cell is classified as prokaryotic?

Bacterial cells

Correct

Plant cells

Animal cells

Fungal cells

Explanation

Bacterial cells are the primary examples of prokaryotic cells, which lack a nucleus and membrane-bound organelles.

Question 6

Basic multiple choice Understanding

Which of the following is a characteristic feature of prokaryotes?

Lack of nucleus

Correct

Presence of mitochondria

Presence of lysosomes

Formation of multicellular organisms

Explanation

Prokaryotes are characterized by the absence of a true nucleus, distinguishing them from eukaryotic cells.

Question 7

Basic multiple choice Remembering

What is the typical size range of prokaryotic cells?

1-10 micrometers

Correct

10-100 micrometers

100-1000 micrometers

0.1-1 micrometers

Explanation

Prokaryotic cells typically range from 1 to 10 micrometers, which is much smaller than most eukaryotic cells.

Question 8

Basic multiple choice Understanding

Which of the following best describes prokaryotic DNA?

Circular and not enclosed in a nucleus

Correct

Linear and inside a nucleus

Double-stranded and associated with histones

Found in multiple chromosomes

Explanation

Prokaryotic DNA is typically circular and is not enclosed within a nucleus, differentiating it from eukaryotic DNA.

Question 9

Complex multiple choice Understanding

In the study of microbiology, you are examining two types of cells: one with a defined nucleus and membrane-bound organelles, and another without a defined nucleus. Which characteristic best describes the second type of cell, often referred to as prokaryotes?

They contain complex organelles like mitochondria.

They are unicellular organisms without compartmentalized structures.

Correct

They have a well-defined nucleus containing their DNA.

They exhibit complex multicellular organization.

Explanation

Prokaryotes are unicellular organisms that lack a defined nucleus and membrane-bound organelles, which is why option B is correct. Options A, C, and D are misconceptions, as they incorrectly attribute characteristics of eukaryotic cells to prokaryotes.

Question 10

Complex multiple choice Analyzing

Consider a laboratory environment where researchers are analyzing two types of bacteria: one that thrives in high-temperature environments and another that prefers moderate temperatures. What would be a plausible conclusion regarding their classification into prokaryotes?

Both types of bacteria can be classified as eukaryotes due to their varying temperature preferences.

The bacteria that thrive in high temperatures are likely thermophilic prokaryotes.

Correct

Neither type of bacteria can be prokaryotes as they show diverse temperature adaptations.

The bacteria showing preference for moderate temperatures must be multicellular prokaryotes.

Explanation

The correct conclusion is B, as thermophilic bacteria are a subset of prokaryotes that can thrive at elevated temperatures. Options A, C, and D present misconceptions regarding the classification of bacteria and the nature of prokaryotes.