Bacteria General Study

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Questions and Answers

What is the purpose of the toxoids in the vaccines?

  • To provide immunity against future attacks
  • To weaken the bacteria
  • To kill the bacteria
  • To stimulate the production of antibodies (correct)

What is the role of nitrogen-fixing bacteria in the soil?

  • To provide oxygen to plants
  • To break down organic matter
  • To produce toxins that kill plants
  • To convert atmospheric nitrogen into amino acids (correct)

What is the main difference between BCG and TAB vaccines?

  • One is used for bacterial infections and the other for viral infections
  • One is used for tuberculosis and the other for typhoid (correct)
  • One is used for typhoid and the other for diphtheria
  • One is made from living bacteria and the other from dead bacteria

What is the limitation of plants in terms of nitrogen?

<p>They cannot make use of nitrogen in the atmosphere (C)</p> Signup and view all the answers

What is the name of the bacteria that lives in small nodules on the roots of legume plants?

<p>Special category of soil bacteria (C)</p> Signup and view all the answers

What is the cellular structure of bacteria?

<p>Prokaryotic (B)</p> Signup and view all the answers

What can some bacteria obtain from animal wastes?

<p>Nitrates (D)</p> Signup and view all the answers

What is the process by which some bacteria obtain nitrates?

<p>Abson (C)</p> Signup and view all the answers

What is the economic importance of bacteria?

<p>They are used in food production (A)</p> Signup and view all the answers

What is the general characteristic of bacteria?

<p>They are found everywhere (D)</p> Signup and view all the answers

What type of organisms are referred to in the passage?

<p>F bacteria (B)</p> Signup and view all the answers

Where do some bacteria obtain nitrates from?

<p>Wastes of animals (A)</p> Signup and view all the answers

What is unique about the cell structure of bacteria?

<p>They are single-valved (B)</p> Signup and view all the answers

What is the general classification of bacteria?

<p>Prokaryotes (B)</p> Signup and view all the answers

What is the study of the biology of these organisms called?

<p>CUNCTII BIOLOGY (D)</p> Signup and view all the answers

What is the role of high concentration of sugar and salt in jams and pickles?

<p>To prevent spoilage (C)</p> Signup and view all the answers

What is the purpose of adding preservatives like sodium benzoate to tinned foods and squashes?

<p>To prevent spoilage (B)</p> Signup and view all the answers

What is the name of the disease caused by the bacterium Bacillus anthracis?

<p>Anthrax (A)</p> Signup and view all the answers

What is the name of the bacterial disease that affects the lungs of cattle?

<p>Bovine tuberculosis (C)</p> Signup and view all the answers

What is the shape of the bacterium Vibrio?

<p>Comma-shaped (B)</p> Signup and view all the answers

What are bioweapons capable of doing?

<p>Causing widespread death (D)</p> Signup and view all the answers

What method is used to preserve vegetables and fruits?

<p>Chilling in cold storage (D)</p> Signup and view all the answers

What is the primary characteristic of bacteria?

<p>They are variously shaped (C)</p> Signup and view all the answers

What is the purpose of adding bacteria to certain foods?

<p>To prevent spoilage (B)</p> Signup and view all the answers

What is the effect of bacteria on certain animals?

<p>They can be both beneficial and harmful (D)</p> Signup and view all the answers

What is the purpose of antibiotics in the treatment of bacterial diseases?

<p>To kill bacteria (C)</p> Signup and view all the answers

Flashcards

Purpose of Toxoids

To stimulate the production of antibodies, providing immunity without causing disease.

Role of Nitrogen-Fixing Bacteria

To convert atmospheric nitrogen into amino acids, which plants can use for growth.

BCG vs. TAB Vaccines

BCG is used for tuberculosis prevention, while TAB is for typhoid fever prevention.

Nitrogen Limitation in Plants

Plants cannot directly utilize nitrogen gas in the atmosphere; they need it in a fixed form.

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Bacteria in Legume Nodules

These bacteria live in symbiosis with legumes, converting nitrogen into a usable form for the plant.

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Cellular Structure of Bacteria

Bacteria have a simple cell structure lacking a nucleus or other membrane-bound organelles.

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Bacteria and Animal Wastes

Some bacteria can convert animal wastes into nitrates, a form of nitrogen usable by plants.

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Abson

This is the process by which some bacteria obtain nitrates.

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Economic Importance of Bacteria

Bacteria are used in the production of various foods like yogurt, cheese, and vinegar.

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General Characteristic of Bacteria

Bacteria are ubiquitous and can be found in virtually every environment on Earth.

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F Bacteria

Bacteria.

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Source of Nitrates for Bacteria

Some bacteria obtain nitrates from the wastes of animals, converting organic matter into usable nutrients.

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Unique Cell Structure of Bacteria

Bacteria are prokaryotic, meaning their cells lack a nucleus and other membrane-bound organelles; they are single celled.

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General Classification of Bacteria

Bacteria are classified as prokaryotes, organisms whose cells lack a nucleus.

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CUNCTII BIOLOGY

CUNCTII BIOLOGY is a term that is not a real term so there is no study of biology.

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Sugar and Salt in Preservation

High concentrations of sugar and salt create a hypertonic environment, inhibiting bacterial growth and preventing spoilage.

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Purpose of Preservatives

Preservatives like sodium benzoate inhibit the growth of microorganisms, extending the shelf life of foods.

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Disease Caused by Bacillus anthracis

Anthrax is a disease caused by the bacterium Bacillus anthracis, which can affect humans and animals.

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Bacterial Lung Disease in Cattle

Bovine tuberculosis is a bacterial disease affecting the lungs of cattle, caused by Mycobacterium bovis.

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Shape of Vibrio Bacteria

Vibrio bacteria are comma-shaped, which is a characteristic feature aiding in their identification.

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Capability of Bioweapons

Bioweapons are capable of causing widespread death and disease by intentionally releasing harmful biological agents.

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Preservation Method for Produce

Chilling in cold storage slows down microbial growth and enzymatic activity, preserving vegetables and fruits.

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Primary Characteristic of Bacteria

Bacteria have diverse shapes, including cocci (spherical), bacilli (rod-shaped), and spirilla (spiral).

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Adding Bacteria To Foods

The addition of specific bacteria to certain foods makes foods like yougurt.

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Effect of Bacteria on Animals

Bacteria can be beneficial by aiding digestion or harmful by causing diseases in animals.

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Purpose of Antibiotics

Antibiotics work to kill bacteria or inhibit their growth, aiding the body in fighting off bacterial infections.

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