Bacteria and Viruses by Omer Tahir https://padlet.com/tahiroe/ce285it7uxj8 A2 Biology en-us 2016-10-06 13:57:57 UTC 2025-11-25 09:12:28 UTC hello@padlet.com Bacteria. tahiroe https://padlet.com/tahiroe/ce285it7uxj8/wish/128817019 Bacteria are prokaryotic cells; much simple than eukaryotic cells.]]> 2016-10-06 14:02:20 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128817019 Size of Virus thomas_mccloskey https://padlet.com/tahiroe/ce285it7uxj8/wish/128826892 Often 100 nanometres. Can vary between 10 and 300 nm.]]> 2016-10-06 14:23:28 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128826892 Structure of Viruses thomas_mccloskey https://padlet.com/tahiroe/ce285it7uxj8/wish/128827751 Viruses contain capsids made up of cashmere proteins. 
Genetic material is stored inside the capsid and the genetic material is made up of single/double stranded DNA and RNA. Partial strands can too exist, in viruses such as hepatitis b. 
Some Viruses have envelope made up of lipid bilayer. 
The envelope is useful because it fuses with the host cell and releases genetic material.
Virulence factors on the outer side of the virus targets certain types of cells.]]> 2016-10-06 14:25:15 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128827751 Viruses Video adamsabri8 https://padlet.com/tahiroe/ce285it7uxj8/wish/128829542 https://www.youtube.com/watch?v=s8jhJXgC-bk]]> 2016-10-06 14:29:08 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128829542 tahiroe https://padlet.com/tahiroe/ce285it7uxj8/wish/128829766
Bacteria come in three main shapes:

1) Spherical (like a ball)
These are usually the simplest ones. Bacteria shaped like this are called cocci (singular coccus).

2) Rod shaped
These are known as bacilli (singular bacillus).
Some of the rod-shaped bacteria are curved; these are known as vibrio.

3) Spiral
These known are as spirilla (singular spirillus).
If their coil is very tight they are known as spirochetes.
There are many variations within each shape group.

Most bacteria multiply by a process called binary fission. A single bacterial cell, the "parent," makes a copy of its DNA and grows large in size by doubling its cellular content.
]]> 2016-10-06 14:29:37 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128829766 Types of Viruses adamsabri8 https://padlet.com/tahiroe/ce285it7uxj8/wish/128830144 Bacteriophage - this virus only attacks and replicates in bacteria.
Herpesvirus
Picornarvirus]]> 2016-10-06 14:30:24 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128830144 tahiroe https://padlet.com/tahiroe/ce285it7uxj8/wish/128830534
]]> 2016-10-06 14:31:14 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128830534 tahiroe https://padlet.com/tahiroe/ce285it7uxj8/wish/128830810
]]> 2016-10-06 14:31:54 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128830810 Shapes of Virus adamsabri8 https://padlet.com/tahiroe/ce285it7uxj8/wish/128831304 Isocohedral Capsid
Helical Capsid]]> 2016-10-06 14:32:58 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128831304 Bacteria Video adamsabri8 https://padlet.com/tahiroe/ce285it7uxj8/wish/128833107 2016-10-06 14:36:51 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128833107 thomas_mccloskey https://padlet.com/tahiroe/ce285it7uxj8/wish/128833630 Viruses classified in groups depending on nucleic acid, shape, structure and method of replication.]]> 2016-10-06 14:38:14 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128833630 thomas_mccloskey https://padlet.com/tahiroe/ce285it7uxj8/wish/128835921 Viruses can only replicate inside other living cells. ]]> 2016-10-06 14:43:19 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128835921 tahiroe https://padlet.com/tahiroe/ce285it7uxj8/wish/128836475
]]> 2016-10-06 14:44:25 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128836475 adamsabri8 https://padlet.com/tahiroe/ce285it7uxj8/wish/128837664 2016-10-06 14:46:53 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128837664 kippaxkudu https://padlet.com/tahiroe/ce285it7uxj8/wish/128841474 2016-10-06 14:54:30 UTC https://padlet.com/tahiroe/ce285it7uxj8/wish/128841474