Bio101 Assignment No 1 2021 Solution Virtual University

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Bio101 Assignment No 1 2021 Solution By ConceptsBuilder

Q. 1 what is cell theory and describe its importance (5 marks), definition of cell theory:.

The cell theory is a such type of biological theory which states  that all biological organisms are composed of cells ; cells are the unit of life and all life come from preexisting life. This is crucial for us understanding biology because cells form the basis of all life. 

 The cell theory is so established today that it forms one of the centralizing principles of biology.

In biology, cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.

Importance of Cell Theory:

The importance of cell theory lies in the fact that it gives us an idea about the concept of cell as a basic unit of life and its activities and interactions that forms a basis of all living processes.

Cell Theory is a unifying concept that shows direct relationships between single celled organisms and all forms of life up through multicellular plants and animals. Understanding the basic structure and function of the cell explains energy acquisition, use, and storage as well as growth, healing, respiration, reproduction, and all of the other requirements of life.

Q.2  What are the differences between bacteria and viruses ( 5 marks)

Bacteria are  small single-celled organisms . Bacteria are found almost everywhere on Earth and are vital to the planet’s ecosystems. Some species can live under extreme conditions of temperature and pressure. The human body is full of bacteria, and in fact is estimated to contain more bacterial cells than human cells.

Viruses are microscopic particles that exist almost everywhere on Earth. They are present in animals, plants, and other living organisms, and they can sometimes cause diseases.

D ifferences between bacteria and viruses

1.Bacteria are totally living in nature.1. Viruses are present in both living and nonliving form.
2. Cell wall of bacteria is made up of lipopolysaccharide or peptidoglycan.   2. Cell wall is absent but a capsid is present in them.
3. Size of bacteria is between 900-1000nm. 3. Size of the virus is between    30-50nm.
4.They can survive without a host.  4.They cannot survive without a host.
5. Bacteria reproduce mainly by binary fission.    5. They reproduce by lytic fission and produce their similar copies.   
6. Ribosomes are present in bacteria.    6. Ribosome is absent in bacteria.
7. RNA and DNA float freely inside cytoplasm.    7. RNA and DNA are present inside the proteinous covering.
8. Antibiotics are effective for bacterial infections.  8. Antivirals are effective for viral infection.
9. Bacteria causes disease like food poisoning, ulcers, pneumonia,etc.   9. Virus causes infection like AIDS, common cold, chickenpox, etc.  
10.Most of the bacteria can reproduce without a host.  10. viruses need a host for their reproduction process.
11. bacterias are both pathogenic and parasitic in nature.    11. They are only parasitic in nature.
12. Bacterial infections are generally localised.    12. Viral infections are systemic.
13.Incubation period of bacterias is 1-2 weeks.    13. Incubation period of the virus is 20 days-2 months.
14. Example of bacterias: Vibrio cholerae, Staphylococcus, etc.    14. Example of Viruses: HIV, Rhinovirus,etc.

Bio101 Assignment No 1 2021 Complete Solution 2

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BIO101 Assignment 1 Solution and Discussion

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Assignment No. 1 Basic I-Biology Fall 2019

Instructions: • Make sure that you upload the solution file before due date. No assignment will be acceptable through e-mail after the due date. Formatting guidelines • Use the font style “Times New Roman” and font size “12”. • Compose your document in MS-Word, any file created in any format will not be accepted and marked zero. • Use black and blue font colors only. Solution guidelines • To solve this assignment, you should have good command over Topics. • This is not a group assignment, it is an individual assignment so be careful and avoid copying others’ work • Give the answer according to question only and avoid irrelevant details. Please note that your assignment will not be graded if: • It is submitted after due date • The file you uploaded does not open • The file you uploaded is copied from someone else • It is in some format other than .doc • Cheating or copying of assignment from internet, ppt lessons or from each other is strictly prohibited. The cheated or copied assignment will be marked ‘Zero’. • Answers should be précised and clear with no useless material. Assignment topic a) What are bacteria? 2 b) Write down bacterial characteristics 3 c) Describe the shapes of bacteria 3 d). Write at least 4 examples of bacteria 2 For any query about the assignment, contact at [email protected] Note: Submit your solution through your LMS account. Solutions submitted through email will not be acceptable.

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@zareen said in BIO101 Assignment 1 Solution and Discussion :

Write at least 4 examples of bacteria

Here are examples of bacterial infections with the bacteria that cause them: Botulism - Clostridium botulinum. Diphtheria - Corynebacterium diphtheriae. Gonorrhea - Neisseria gonorrhoeae. Legionnaire’s Disease - Legionella pneumophila. Leprosy - Mycobacterium leprae. Leptospirosis - Leptospira interrogans. Examples of Bacteria

Describe the shapes of bacteria

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Write down bacterial characteristics

Bacteria are like eukaryotic cells in that they have cytoplasm, ribosomes, and a plasma membrane. Features that distinguish a bacterial cell from a eukaryotic cell include the circular DNA of the nucleoid, the lack of membrane-bound organelles, the cell wall of peptidoglycan, and flagella. Source

What are bacteria?

Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Wikipedia

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    1.Bacteria are totally living in nature. 1. Viruses are present in both living and nonliving form. 2. Cell wall of bacteria is made up of lipopolysaccharide or peptidoglycan. 2. Cell wall is absent but a capsid is present in them. 3. Size of bacteria is between 900-1000nm.

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