HSC Biology Progression (3 Viewers)

[Candidate]

Lmao

._.


Did our school do it in the wrong order?

So fail.

In other news, just looked over MaB's 8 pracs.

If the kidney one comes up, i will say I used a "visual resource" as it says we can in the syllabus point.

 

[Menomaths]

._.


Did our school do it in the wrong order?

So fail.

Doesn't really matter as long as you complete the course, something we couldn't do haha

 

[Candidate]

Doesn't really matter as long as you complete the course, something we couldn't do haha

Hahahah

dw we didn't finish either. We skipped 3 MaB pracs and 1 Blueprint prac ( the effect of light on plants) and didn't finish communications til the second last lesson.

 

[bedpotato]

Question: If Polio is a virus, how come the immune response is the production of B cells?

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I don't quite get you lol.

 

[Cleverusername5321]

Question: If Polio is a virus, how come the immune response is the production of B cells?

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They both defend against viruses except B cells do it outside of cells and T cells do it inside of cells. Source: HSC Biology in focus, p291.

 

[DJ696]

looks I'll be winging bio! anyone with me?

 

[bedpotato]

looks I'll be winging bio! anyone with me?

You've still got today to cram lol.

 

[DJ696]

You've still got today to cram lol.

i haven't touched communication haha

 

[Queenroot]

They both defend against viruses except B cells do it outside of cells and T cells do it inside of cells. Source: HSC Biology in focus, p291.

What do you mean by inside and outside of cells?

 

[Cleverusername5321]

What do you mean by inside and outside of cells?

Cell-mediated immunity vs antibody-mediated immunity.
This says that cell-mediated immunity is used by T cells and is effective against: bacteria and viruses that are inside cells; protozoa, fungi, flatworms and roundworms; cancerious cells and transplanted foreign tissue.
Antibody mediated (humoral) immunity is used by B cells and defends against: bacteria and viruses outside of cells; toxins produced by bacteria.
This is on page 290 of Biology in focus textbook.

I'm horrible at explaining, I suggest just going to a library and reading the textbook tomorrow.

 

[leesh95]

Question: If Polio is a virus, how come the immune response is the production of B cells?

o_____________________O

o_____________________O

 

[obliviousninja]

looks I'll be winging bio! anyone with me?

Sorry, state rankers simply don't wing.

 

[leesh95]

What do you mean by inside and outside of cells?

B cell make antibodies that bind to antigen to deactivate it.

There are many types of T cells and cytotoxic/killer T cell actually combine with the cell displaying antigen to release chemicals that will destroy the cell.

They will both function together to overcome a viral infection

 

[obliviousninja]

Outline processes used to produce transgenic organisms +examples. 3m.

 

[planino]

T-cells control cell-mediated immunity
B-cells control antibody-mediated immunity

So basically, the (killer) T-cells will destroy infected cells by binding to the antigens on the cells, and then releasing chemicals into the cells to kill it and any pathogens (which includes viruses) within.

B cells basically, when activated (by interleukin-2), they clone themselves. Some form plasma cells whilst others form memory B cells. The plasma cells release antibodies ---> travel to site of infection ---> form an antigen-antibody complex by binding to the viruses ---> immobilises it ----> can be destroyed via phagocytosis (the final destruction of the pathogen is variable)

When viruses enter, the antibodies (produced by plasma cells) will directly attack the virus, whilst the killer T cells will (release chemicals into) the infected cells, killling the cells and the virus within.

Of course this isn't in full detail, and I'm not terribly sure about the T-cell cloning thingo and what happens there

 

[leesh95]

T-cells control cell-mediated immunity
B-cells control antibody-mediated immunity

So basically, the (killer) T-cells will destroy infected cells by binding to the antigens on the cells, and then releasing chemicals into the cells to kill it and any pathogens (which includes viruses) within.

B cells basically, when activated (by interleukin-2), they clone themselves. Some form plasma cells whilst others form memory B cells. The plasma cells release antibodies ---> travel to site of infection ---> form an antigen-antibody complex by binding to the viruses ---> immobilises it ----> can be destroyed via phagocytosis (the final destruction of the pathogen is variable)

When viruses enter, the antibodies (produced by plasma cells) will directly attack the virus, whilst the killer T cells will (release chemicals into) the infected cells, killling the cells and the virus within.

Of course this isn't in full detail, and I'm not terribly sure about the T-cell cloning thingo and what happens there

Don't Helper T cell release cytokines that stimulates Killer T cell and B cell cloning

 

[planino]

Yep, I omitted that to keep it "brief"

You (and anybody else of course) can help me with this thingo though:

When Helper T-cells (Th cells) are activated, do the Th cells become cloned as well?
- And if they do, then do some Th cells become killer T cells whilst others become memory T cells?
Interleukin-2 (a cytokine) is released by the activated Th cell and this stimulates B cell cloning. Most B cells become plasma cells whilst some become memory B cells. Is this correct?
Also, when the killer T-cells are activated, they clone themselves. Memory T cells are produced simulataneously, but where do they come from? With B cells, some B cells become the memory B cells, but memory T cells seem to appear out of nowhere.

 

[planino]

I'm going to post these questions in my other thread so others looking through don't have to look between 2 threads.

 

[Queenroot]

T-cells control cell-mediated immunity
B-cells control antibody-mediated immunity

So basically, the (killer) T-cells will destroy infected cells by binding to the antigens on the cells, and then releasing chemicals into the cells to kill it and any pathogens (which includes viruses) within.

B cells basically, when activated (by interleukin-2), they clone themselves. Some form plasma cells whilst others form memory B cells. The plasma cells release antibodies ---> travel to site of infection ---> form an antigen-antibody complex by binding to the viruses ---> immobilises it ----> can be destroyed via phagocytosis (the final destruction of the pathogen is variable)

When viruses enter, the antibodies (produced by plasma cells) will directly attack the virus, whilst the killer T cells will (release chemicals into) the infected cells, killling the cells and the virus within.

Of course this isn't in full detail, and I'm not terribly sure about the T-cell cloning thingo and what happens there

Ah okay. I thought Bcells replicated when it was a bacterial infection and tcells activated for viral infections.

 

[Candidate]

Up to Blueprint now. So exhausting...