"The Relationship between Microorganisms and Humans" PPT courseware

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"The Relationship between Microorganisms and Humans" PPT courseware

Part One: Microorganisms and Food

In our lives, many foods use microorganisms directly or indirectly. Can you give an example?

1. Yeast is used to make steamed buns and bread to make them soft.

2. Mushrooms and fungus are fungi and can be eaten directly. Some can also make medicine.

3. Vinegar, yogurt, etc.

After reading about the making of kimchi in the activity, please think about:

1. Which microorganism is mainly responsible for making kimchi? Name the origin of this microorganism?

Lactic acid bacteria

Kimchi jar and liquid

2. Why is a considerable amount of sugar added to the ingredients?

Lactic acid bacteria break down sugars to produce lactic acid.

3. Why should the injected liquid submerge the vegetables and seal the pickle jar?

Lactic acid bacteria can only break down sugar to produce lactic acid in the absence of oxygen.

PPT on the relationship between microorganisms and humans, Part 2: Microorganisms and diseases

Human diseases caused by microorganisms fall into three categories: infectious diseases, non-infectious diseases and poisoning.

Infectious diseases, such as AIDS, influenza, bacillary dysentery, etc.

Non-communicable diseases, such as Aspergillus flavus, if Aspergillus flavus produces aflatoxin, it can also cause cancer, etc.

Poisoning, such as poisonous red mushrooms, etc.

PPT on the relationship between microorganisms and humans, part three: Carefully select one

1. Which microorganism causes AIDS? ( )

A Bacteria B Fungi

C yeast D virus

2. When making the following foods, microorganisms are not needed ( )

A steaming steamed buns B brewing rice vinegar

C Make yogurt D Pickle pickles

3. Which of the following substances has carcinogenic effects ( )

A Monascus produced by Monascus B Aflatoxin produced by Aspergillus flavus

C Rhizopus produces amylase and other enzymes D Penicillin produced by Penicillium

Keywords: Beijing Normal University version of the eighth grade biology PPT courseware for the first volume is free to download, the relationship between microorganisms and humans PPT download, .PPT format;

For more information about the PPT courseware "Microorganisms in the Biosphere and the Relationship between Microorganisms and Humans", please click on the "Microorganisms in the Biosphere ppt Relationship between Microorganisms and Humans" ppt tag.

"The Relationship between Microorganisms and Humans" PPT:

"The Relationship between Microorganisms and Humans" PPT Part One: Situation Introduction In our lives, many foods directly or indirectly use microorganisms. Can you give an example? 1. Yeast is used to make steamed buns and bread to make them soft. 2. Mushrooms and fungus are fungi...

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Update Time: 2024-07-23

This template belongs to biology courseware Beijing Normal University Edition Eighth Grade Biology Volume 1 industry PPT template

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