GCSE OCR 21st Century Biology

A quiz for GCSE triple science students studying the OCR 21st Century Biology course.

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An autotroph
Makes its own food
1 of 16
A decomposer...
Feeds on and decays dead organisms
2 of 16
There is usually no fifth trophic level for a food chain because...
Not enough energy would be passed on to sustain a fifth stage
3 of 16
Why is starch a better storage molecule than glucose?
It is insoluble, so unlike glucose, it has little effect on the osmotic balance of the cell
4 of 16
How do plant roots absorb nitrates?
Active transport
5 of 16
When do plants respire?
Continuously
6 of 16
What is a symbiotic relationship?
One that benefits both organisms
7 of 16
DNA samples for genetic testing come from....
White blood cells
8 of 16
A gene probe...
Has bases that pair with the bases on the fault allele
9 of 16
What is an "oxygen debt"?
The amount of oxygen needed to break down the lactic acid after anaerobic respiration?
10 of 16
What does plasma NOT contain?
Lactic acid
11 of 16
What do platelets do?
Help to clot a wound
12 of 16
What is a sprain?
An overstretched ligament
13 of 16
What does RICE stand for?
Rest Ice Compress Elevate
14 of 16
What does a doctor NOT need to know before they diagnose or treat a problem?
Your marital status
15 of 16
Why might treatment be continued despite side effects?
If the benefits are greater than the problems
16 of 16

Other cards in this set

Card 2

Front

A decomposer...

Back

Feeds on and decays dead organisms

Card 3

Front

There is usually no fifth trophic level for a food chain because...

Back

Preview of the front of card 3

Card 4

Front

Why is starch a better storage molecule than glucose?

Back

Preview of the front of card 4

Card 5

Front

How do plant roots absorb nitrates?

Back

Preview of the front of card 5
View more cards

Comments

maryam

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is that olivia.

Husna

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This was very helpful in telling me that i still need to revise, like seriously revise. So thanks ever so much!

Coffee-loving-revision-weirdo

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Isn't question 11 incorrect? As a symbiotic relationship is a relationship that includes two or more organisms that do not necessarily, benefit each member.

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