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✨🗒 community gcse note thread

Hi there!

i'm in y10 and i was inspired by @𝕷𝖆𝖎𝖇𝖆 and a few others to start a note thread! i'll be posting some notes from my subjects and anyone can add their own, a kind off community note/help space!

enjoy!

Scroll to see replies

Reply 1

my subjects:



My Subjects:

Reply 2

:danceboy:

Reply 3

monoclonal antibodies

how are they made?

Lymphocytes from a healthy person who previously had the disease are extracted (they can produce the antibody)

Tumor cells from mice are extracted (they can divide quickly)

They're merged to form 'hybridoma cells' which divide quickly AND produce antibodies

These are cloned in bioreactor

The clones produce the antibody


what are they used for?

disease / pregnancy testing

treating disease & infections

Reply 4

Original post
by udon1098
monoclonal antibodies
how are they made?

Lymphocytes from a healthy person who previously had the disease are extracted (they can produce the antibody)

Tumor cells from mice are extracted (they can divide quickly)

They're merged to form 'hybridoma cells' which divide quickly AND produce antibodies

These are cloned in bioreactor

The clones produce the antibody


what are they used for?

disease / pregnancy testing

treating disease & infections


Awesome - well done on these notes :smile:

Reply 5

Original post
by udon1098
monoclonal antibodies
how are they made?

Lymphocytes from a healthy person who previously had the disease are extracted (they can produce the antibody)

Tumor cells from mice are extracted (they can divide quickly)

They're merged to form 'hybridoma cells' which divide quickly AND produce antibodies

These are cloned in bioreactor

The clones produce the antibody


what are they used for?

disease / pregnancy testing

treating disease & infections


Question: are the tumor cells called myeloma cells? Also love the notes!!

Reply 6

Original post
by Anonymously321
Question: are the tumor cells called myeloma cells? Also love the notes!!

thank you!

yep i think they can be called either - we call them tumor cells

Reply 7

Original post
by udon1098
thank you!
yep i think they can be called either - we call them tumor cells

:heart::yep:

Reply 8

vaccines
A vaccine is a dead, weakened or inactive form of a pathogen that is injected into a patient

1.

The pathogen is introduced to the patient (thru the vaccine)

2.

White blood cells produce lots of different antibodies (trial & error) until it finds one that works

3.

It saves this as a memory

4.

The next time the patient gets the disease, lots of the correct antibody is produced quickly.

Herd immunity is when enough of the population is immune so the disease can no longer spread

btw sorry for so much biology, but i have an exam on wed! see you soon :smile:

Reply 9

Original post
by udon1098
vaccines
a vaccine is a dead, weakened or inactive form of a pathogen that is injected into a patient

1.

the pathogen is introduced to the patient (thru the vaccine)

2.

white blood cells produce lots of different antibodies (trial & error) until it finds one that works

3.

it saves this as a memory

4.

the next time the patient gets the disease, lots of the correct antibody is produced quickly.

herd immunity is when enough of the population is immune so the disease can no longer spread
btw sorry for so much biology, but i have an exam on wed! See you soon :smile:

good luck!

Reply 10

Original post
by udon1098
vaccines
A vaccine is a dead, weakened or inactive form of a pathogen that is injected into a patient

1.

The pathogen is introduced to the patient (thru the vaccine)

2.

White blood cells produce lots of different antibodies (trial & error) until it finds one that works

3.

It saves this as a memory

4.

The next time the patient gets the disease, lots of the correct antibody is produced quickly.

Herd immunity is when enough of the population is immune so the disease can no longer spread
btw sorry for so much biology, but i have an exam on wed! see you soon :smile:

Good luck and nice notes!

Reply 11

acceleration
acceleration is the rate of change of speed
measured in m/s²
(v - u) / t
v is the final velocity (m/s), u is the initial velocity (m/s) & t is time (s)

Reply 12

Why hello there :biggrin:
I’m currently curating my own notes as well, I’d thought I’d share it here :]
You’re doing really well! Keep up the momentum and thank you for providing a space for everyone to share!
https://www.thestudentroom.co.uk/showthread.php?t=7644943

Reply 13

exchange rates

An exchange rate is the price of one currency in another.

If the value of the £ appreciates (goes up), you can get more $ per £.
If the £ depreciates (goes down), you can get less $ per £.

Strong
Pound
Imports
Cheaper
Exports
Dearer (more expensive)

If the pound is strong, it is worth more in foreign currencies, making imports cheaper
Also, exports cost more because more foreign currency is needed to buy the item from the UK

Reply 14

YOU'RE BAcK!!

Reply 15

Original post
by maybe-laiba
YOU'RE BAcK!!

yes i am!

Reply 16

Penetration testing
Penetration testing is attempting to gain access to resources without knowledge of credentials or normal means of access.
Companies use penetration testing to identify flaws in a network so they can fix any issues found.

Malicious insider / white box
A malicious insider is a penetration tester who has knowledge of the system and possibly basic credentials. This is used to simulate an attack from inside the network (eg a double agent)

External attack
A penetration tester has no knowledge of any credentials of the system - simulating an attack from outside

Reply 17

Newton’s 1st law

Objects will remain at rest, or move with a constant velocity unless acted on by a resultant force

This means that if forces are balanced on the object it will either not move or move at constant velocity (speed and direction).

eg. If a car has 100N of thrust and 100N of air resistance (balanced forces), it moves at a constant velocity.

When there is a resultant force (unbalanced) then Newton’s 1st law no longer applies. Then the object can change speed, shape and direction.

Reply 18

just-in-time production

just-in-time / JIT production means that items are created as they are demanded.
This means that no excess products are stored (less warehouse costs), and no extra materials are ordered.

Benefits:

less warehousing cost

order confirmed before parts are ordered

stock doesn't become damaged or obsolete


Drawbacks:

products take longer to arrive

relies on a high-quality supply chain

less benefits from economies of scale (bulk discounts)

Reply 19

business risks

Cyber attacks - loss of data & reputation

Changes in taste & trends

Negative media attention - bad publicity, loss of sales

Risk from competition

Financial risks

Weather / natural disasters - storms, floods, volcano, COVID

Staffing issues - staff who are not reliable or go on strike

How to minimize risk: write a business plan, do market research, risk assessment, sell in the right location
Uncertainty is when businesses are unable to predict external shocks or future events
(edited 1 month ago)

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