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yang573 wrote:1a. What are obligate intracellular parasites?
1b. Name two cellular examples.
1c. For the two examples, describe how they enter a host cell.

1a. Obligate intracellular parasites are microbes that can not reproduce outside of a host cell
1b. I believe rickettsia and chlymidia
1c. Rickettsia are arthropod borne and chlamydia is sexually transmitted?

The48thYoshi wrote:

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1a. Obligate intracellular parasites are microbes that can not reproduce outside of a host cell
1b. I believe rickettsia and chlymidia
1c. Rickettsia are arthropod borne and chlamydia is sexually transmitted?

The48thYoshi wrote:What is the disease mechanism of Dutch Elm

The two pathogenic species of [i]Ophiostoma[/i] germinate in the xylem and steal nutrients from the host tree.

yang573 wrote:

The48thYoshi wrote:

- (Click to Show Hidden Text)

1a. Obligate intracellular parasites are microbes that can not reproduce outside of a host cell
1b. I believe rickettsia and chlymidia
1c. Rickettsia are arthropod borne and chlamydia is sexually transmitted?

For 1c, I was looking for how the bacteria enter a host cell. Specifically Rickettsia and Chlamydia induce phagocytosis but avoid destruction within the cell.

The48thYoshi wrote:What is the disease mechanism of Dutch Elm

Answer (Click to Show Hidden Text)

The two pathogenic species of [i]Ophiostoma[/i] germinate in the xylem and steal nutrients from the host tree.

The fungus resides in the xylem and the tree kills itself when it blocks its own xylem tissue to prevent the fungus from spreading

allopathie wrote:I'll jump in: what are five specific (think molecular) adaptations of hyperthermophilic archaea?

whythelongface wrote:

allopathie wrote:I'll jump in: what are five specific (think molecular) adaptations of hyperthermophilic archaea?

I did have to Google some of this but oh well, the more you know, the more you know!

1. Heat-stable enzymes (eg. polymerases)
2. High levels of saturated FAs in membrane
3. Ether instead of ester linkages
4. Many HSPs
5. Tetraether monolayers

Okay, I had to search a lot of this up... archaea are hard...

NeilMehta wrote: New question, I guess:
list all of the different types of RNA

Ribosomal RNA (rRNA), Messenger RNA (mRNA), tranfer RNA (tRNA).

whythelongface wrote:Small interfering RNA (siRNA) should also be included, but it's kind of moot.