Pearson Chapter 1 Flashcards

Questions and Answers

In which of the following groups will this microorganism be classified?

Algae

Protozoa

Bacteria (correct)

Fungi

Bacteria lack a membrane-bound nucleus.

True

Which of the following types of microorganism and its description are NOT correctly matched?

Viruses—living organisms

Fungi—decomposers

Protozoa—small animals (correct)

Bacteria—single-celled organisms

Both bacteria and viruses use a molecule of nucleic acid to determine heredity.

True Signup and view all the answers

What is a scientific name example?

Legionella pneumophila Signup and view all the answers

Microbes are NOT responsible for __________.

antibody production Signup and view all the answers

Why are viruses not classified as prokaryotes or eukaryotes?

They need a host to survive, thus are not considered alive. Signup and view all the answers

The scientific name is always underlined or italicized.

True Signup and view all the answers

All of the following are eukaryotes EXCEPT __________.

Bacteria Signup and view all the answers

All living organisms can be classified into three domains: __________.

Bacteria, Archaea, and Eukarya Signup and view all the answers

Biofilms are commonly found in which of the following environments?

All of the listed responses are correct Signup and view all the answers

Both bacteria and archaea are characterized as prokaryotes.

True Signup and view all the answers

Algae are __________.

photosynthetic and classified as eukaryotes Signup and view all the answers

Only a small percentage of microbes __________.

cause disease Signup and view all the answers

What is the study of protozoa called?

Parasitology Signup and view all the answers

All of the following describe a major feature used to classify organisms into three domains (Bacteria, Archaea, and Eukarya) EXCEPT __________.

presence or absence of DNA Signup and view all the answers

Which of the following processes are beneficial activities of microorganisms?

All of the listed responses are correct Signup and view all the answers

In the scientific name Escherichia coli, Escherichia is the __________.

genus name Signup and view all the answers

Which of the following is NOT a characteristic of Archaea?

Use of a harmless virus to insert a gene in a host cell Signup and view all the answers

Which of the following best describes gene therapy?

Use of a harmless virus to insert a gene in a host cell Signup and view all the answers

Study Notes

Microorganisms and Classification

A newly isolated microorganism from Yellowstone lacks a nucleus and shows DNA and RNA presence in the cytoplasm, indicating it belongs to the Bacteria kingdom.
Bacteria are characterized by the absence of a membrane-bound nucleus.
Protozoa are incorrectly matched with their description as small animals; they are single-celled eukaryotic organisms.
Both bacteria and viruses utilize nucleic acids for heredity determination, despite their biological differences.

Scientific Naming and Classification

Scientific names, such as Legionella pneumophila, are italicized or underlined for proper identification.
Living organisms are classified into three domains: Bacteria, Archaea, and Eukarya.
A significant distinction in classification is that Bacteria do not fall under eukaryotes.

Microbial Environments and Characteristics

Biofilms can be found in diverse environments including rocks in lakes, dental plaque, water pipes, and medical devices.
Both bacteria and archaea share characteristics as prokaryotes.
Algae are recognized as photosynthetic organisms classified as eukaryotes, crucial to ecosystems.

Microbial Impact and Disease

A small percentage of microbes are pathogenic; most are beneficial, recycling elements, decomposing sewage, and aiding in food and chemical production.
Parasitology is the study of protozoa, shedding light on their role in ecosystems and human health.

Gene Therapy and Archaea Distinctions

Gene therapy is described as the use of a harmless virus to introduce a gene into a host cell, showcasing an application of microorganisms in medical advancements.
Characteristics of Archaea do not include the use of harmless viruses for gene insertion; they are known for bioremediation and nitrogen recycling, highlighting their environmental roles.

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Description

Test your knowledge on the characteristics and classification of microorganisms from Pearson Chapter 1. These flashcards cover key concepts, including the classification of bacteria and their defining traits. Perfect for students aiming to strengthen their understanding of microbiology.