"Magical Microorganisms" PPT

Description

"Magical Microorganisms" PPT

Part One: Objectives of this Section

Describe the main characteristics of bacteria and fungi

Describe the main characteristics of viruses

Give examples of the relationship between viruses, bacteria, and fungi and human life

Magical microorganisms PPT, part 2: theme exploration

Exploration Topic 1 Bacteria

1. According to the different forms of bacteria, bacteria are divided into _____ (such as Staphylococcus aureus), _____ (such as Bacillus subtilis) and _____ (such as Helicobacter spp.).

2. Bacteria are all single-celled. Bacterial cells are generally composed of _____, _____, _____ and _____. There is no formed _____, only _____, _____ is naked, and there is no _____ coating. Some have structures such as _____ and _____.

3. Cells with only a nuclear region are called _____, and organisms composed of _____ are called prokaryotes.

Bacterial nutrition

Bacteria generally do not contain chloroplasts and can only rely on readily available organic matter to maintain life. This nutritional method is called heterotrophy.

1. The nutritional method that relies on decomposing the remains of plants and animals to obtain nutrients is called (such as _____, methanogens, etc.).

2. The nutritional method of absorbing nutrients from living organisms is called (such as Shigella dysenteriae _____, etc.).

Autotrophy refers to the nutritional method that can synthesize inorganic substances into organic substances to maintain life.

The relationship between bacteria and humans

1. Most bacteria are beneficial to humans. For example: people use ______ to make MSG, ___ to produce yogurt, ___ to produce biogas, and vinegar to make

Acetic acid bacteria, etc.

2. There are a few bacteria that are harmful to humans. For example, tuberculosis and pneumonia are caused by _____ and _____ respectively.

Magical microorganisms PPT, part three: summary

1. Bacteria

1. According to the morphology of bacteria, bacteria can be divided into cocci, bacilli, and spiral bacteria.

2. Single cell without a formed nucleus. Parasitic or saprophytic.

2. Fungi

Single or multicellular, with formed nuclei. Parasitic or saprophytic.

3. Viruses

1. There is no cell structure, only a protein shell and genetic material inside. Unable to live independently, parasitic.

2. According to the different infecting organisms, they are divided into bacterial viruses, plant viruses and animal viruses.

Magical microorganisms PPT, part 4: training to meet standards

1. Among the following, which one is not a characteristic of bacterial cells?

A. They are all single cells B. Have cell wall, cell membrane and cytoplasm

C. With formed nucleus D. Without formed nucleus

2. Compared with bacteria, the main difference is that bacteria do not

A. Cell membrane B. Cytoplasm C. Formed nucleus D. Cell wall

3. Which of the following statements about viruses is incorrect?

A. No cellular structure

B. Does not have the basic characteristics of living things

C. Composed of a protein shell and genetic material inside

D. Can only reproduce by parasitizing in living cells

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For more information about the "Colorful Biological World and Magical Microorganisms" PPT courseware, please click on the Colorful Biological World PPT and Magical Microorganisms PPT tag.

"Magical Microorganisms" PPT courseware:

The first part of the "Magical Microorganisms" PPT courseware content: The goal of this section is to describe the main characteristics of bacteria and fungi, describe the main characteristics of viruses, and give examples of the relationship between viruses, bacteria, and fungi and human life... ... ... Magical Microbiology PPT, Part 2...

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Update Time: 2024-10-07

This template belongs to biology courseware Jiangsu Education Edition 8th Grade Biology Volume 1 industry PPT template

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