aqa biology unit 1 POP QUIZ!!!!!!!

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Tissue culture is used to grow rare and important plants. Tissues are scraped off the parent plant and placed in agar jelly in a petri dish with nutrients and Auxin. These grow into little plantlets which are then planted into compost. Tissue culture is more expensive than cuttings but it causes less harm to the parent plant.

You got it right :smile:

Reply 61

rheaj44

What is a vaccine? Sorry if it's already been asked aha

Reply 62

username2043477

Original post by rheaj44

What is a vaccine? Sorry if it's already been asked aha

An injection/substance contaning a dead/inactive form of the virus

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Reply 63

MollieT3

Original post by rheaj44

What is a vaccine? Sorry if it's already been asked aha

Injecting a dead or inactive pathogen so the white blood cells can produce anti bodies to fight the virus if it enters the body again

Reply 64

JakeAntonyBrown

Original post by MollieT3

Injecting a dead or inactive pathogen so the white blood cells can produce anti bodies to fight the virus if it enters the body again

Perfect

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Reply 65

JakeAntonyBrown

Original post by Sneakerhead

An injection/substance contaning a dead/inactive form of the virus

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Perfect

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Reply 66

dhruvap

Compare LDL with HDL.
Also how can cholesterol be reduced + advantages and disadvantages of the method.

Reply 67

randomperson11

Original post by dhruvap

Compare LDL with HDL.
Also how can cholesterol be reduced + advantages and disadvantages of the method.

LDL = bad cholesterol
HDL= good cholesterol (also prevents build up of plaques in blood vessels)
Lowering cholesterol by doing more exercise.. This increases metabolic rate and breaks down fat.
Reducing food intake.
Using statins (drugs) which reduce blood cholesterol level, however there are some side effects and there is a chance of developing type 2 diabetes.