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Decklan
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The unofficial markscheme for 16th May 2017 AQA Biology Unit 1 GCSE paper is here




2016 Biology 1 GCSE markscheme is here.



Thalidomide & Drug testing

What's thalidomide now used for? (1 mark)

Leprosy

What's the minimum years? (1 mark)

6 years.

Minimum range? (1 mark)

1120-5600

Why do legal non-prescribed drugs have the greatest affect on the population? (2 marks)
-Because most of the population take legal non prescribed drugs
-Due to it being easily available over counter.

Why are trials done? (1 mark)

-Check dosage
-Check for toxicity
-Check to see if the drug actually does what it was made to do.

Blah blah blah something about why do you get dependant on a drug or on those lines was last question of the page (1 mark)

Changes body chemistry, making you addicted which makes you dependant on that drug.

Carbon cycle

Process x? (1 mark)

Photosynthesis.

Tonne of carbon from respiration released to air? (1 mark)

140

Why are scientists concerned? (1 mark)

Because there's an overall increase in carbon.

Weed killer

Control variable (1 mark)
-Volume of solution
-Type of weed killer
-Type of flower?
-10m^2 lawn he used.
-Time period.

Why does he think it was anomalous?(1 mark)

Because there was an increase of number of daisies after using the weed killer.

Why did he use 0 arbitrary units of concentration?(1 mark)

Acts as a control.

Why is his conclusion about using 100 arbitrary units of concentration seemingly wrong? (1 mark)

Because using a lower concentration of 80 gave the same result.

Auxins (6 mark)
-Shoots grow towards light, auxins accumulate on darker side and bend the shoot towards the light.
-Shoots grow against gravity, auxins accumulate on lower side and bend the shoot upwards.
-Roots grow towards gravity, so roots grow downwards
.-Roots, hydrotropism, grow towards moist areas.

Sea Weed (3 marks)

Air in the bladder contain carbon dioxide which is needed for photosynthesis, so more photosynthesis can be done and therefore more growth. This answer is closer to the spec as it gets but the other alternative which most people put:

Air means less dense and can float on the surface taking light energy for photosynthesis.

Birds

Three reasons why shallow sparrows are not as common as blackbirds? (3 marks)
-There was a greater percentage of blackbirds seen in a garden.
-Blackbirds may come at different times so not counted.
-May not be the season for blackbird.

Two reasons why goldfinch birds increased in 2012? (2 marks)
-Less predators.
-More prey.
-Migrated from a different place.

Percentage change (2 mark)

33.5 x 1.8 = 60.3

Immune system

What's a pathogen? (1 mark)

a bacterium, virus, or other microorganism that can cause disease.How do doctors stop resistance of bacteria?( 2 marks)

Advice patients to not overuse antibiotics and complete their course, to prevent mutation of bacteria to become resistant.

Temperature (2 marks)

40 degrees.Because at this temperature there will be the fastest growth of bacteria.

The nervous system

What's a receptor? (2 marks)

Detects stimuli which sends impulses to neurones.

Table (4 marks)
Effector: Muscle, response: Contract
Effector: Gland, response: secretes hormone.

Genetics

What's a gene? (2 mark)

A gene codes for a specific protein which concurs to a characteristic.

Similar and differences between adult cell cloning and iPA (4 marks)

Similar: Both use a skin cell, and a suroogate mother.
Difference: Adult cell cloning takes a nucleus out and needs an eletric shock as opposed to fertilisation in iPA.

Menstrual Cycle

Where is Oestrogen produced? (1 mark)

Ovaries

What does Oestrogen do in the cycle? (1 mark)

Inhibits further production of FSH.

Fish (2 marks)

-light makes it easier to see in the dark, so can easily catch prey to survive.
-Makes fish attracted to the light and therefore, can easily find it's nemo.

Which cell in the liver produces enzyme? (1 mark)

Control - Nucleus
Produce - Ribsome.

How does stains help? (1 mark)

By lowering the LDL produced by the liver.

Healthy Diet

What's a healthy diet (2 marks)

A healthy diet contains the right balance of the foods you need and the correct amount.

Describing the graph of cholesterol (2 marks)

As cholesterol intake from diet increases, production of cholesterol from liver decreases, this needs to be supported by figures from the graph.

Why do we save endangered species? (1 mark)

-Keeps damage to food chains and food webs to a minimum.
-Protects our future food supply.
-For future generations to see.




Credits go to Gecko242 in helping once again. Have a good day.
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gecko242
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If anyone has other potential marks, rather than complaining that they are not all here it would be helpful if you could PM either me or Decklan (OP) with any info.

-Gek
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Alexanfiorenza
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Second to last question is nucleus not ribosome
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Alexanfiorenza
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Receptor question was about role of skin receptors
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Alexanfiorenza
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The last question was that it inhibited the enzyme production
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willetts99
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It wasn't because ribosomes synthesis proteins and an enzyme is a protein
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Whatwhy
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There was a question about fertility if anyone can remember what it was?
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partallaboutme
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(Original post by Decklan)
Thalidomide & Drug testing

What's thalidomide now used for? (1 mark)

Leprosy

What's the minimum years? (1 mark)

6 years.

Minimum range? (1 mark)

1120-5600

Why do legal non-prescribed drugs have the greatest affect on the population? (2 marks)
-Because most of the population take legal non prescribed drugs
-Due to it being easily available over counter.

Why are trials done? (1 mark)

-Check dosage
-Check for toxicity
-Check to see if the drug actually does what it was made to do.

Blah blah blah something about why do you get dependant on a drug or on those lines was last question of the page (1 mark)

Changes body chemistry, making you addicted which makes you dependant on that drug.

Carbon cycle

Process x? (1 mark)

Photosynthesis.

Tonne of carbon from respiration released to air? (1 mark)

140

Why are scientists concerned? (1 mark)

Because there's an overall increase in carbon.

Weed killer

Control variable (1 mark)
-Volume of solution
-Type of weed killer
-Type of flower?

Why does he think it was anomalous?(1 mark)

Because there was an increase of number of daisies after using the weed killer.

Why did he use 0 arbitrary units of concentration?(1 mark)

Acts as a control.

Why is his conclusion about using 100 arbitrary units of concentration seemingly wrong? (1 mark)

Because using a lower concentration of 80 gave the same result.

Auxins (6 mark)
-Shoots grow towards light, auxins accumulate on darker side and bend the shoot towards the light.
-Shoots grow against gravity, auxins accumulate on lower side and bend the shoot upwards.
-Roots grow towards gravity, so roots grow downwards
.-Roots, hydrotropism, grow towards moist areas.

Sea Weed (3 marks)

Air in the bladder contain carbon dioxide which is needed for photosynthesis, so more photosynthesis can be done and therefore more growth. This answer is closer to the spec as it gets but the other alternative which most people put:

Air means less dense and can float on the surface taking light energy for photosynthesis.

Birds

Three reasons why shallow sparrows are not as common as blackbirds? (3 marks)
-There was a greater percentage of blackbirds seen in a garden.
-Blackbirds may come at different times so not counted.
-May not be the season for blackbird.

Two reasons why goldfinch birds increased in 2012? (2 marks)
-Less predators.
-More prey.
-Migrated from a different place.

Percentage change (2 mark)

33.5 x 1.8 = 60.3

Immune system

What's a pathogen? (1 mark)

a bacterium, virus, or other microorganism that can cause disease.How do doctors stop resistance of bacteria?( 2 marks)

Advice patients to not overuse antibiotics and complete their course, to prevent mutation of bacteria to become resistant.

Temperature (2 marks)

40 degrees.Because at this temperature there will be the fastest growth of bacteria.

The nervous system

What's a receptor? (2 marks)

Detects stimuli which sends impulses to neurones.

Table (4 marks)
Effector: Muscle, response: Contract
Effector: Gland, response: secretes hormone.

Genetics

What's a gene? (1 mark)

A gene codes for a specific protein which concurs to a characteristic.

Similar and differences between adult cell cloning and iPA (4 marks)

Similar: Both use a skin cell, and a suroogate mother.
Difference: Adult cell cloning takes a nucleus out and needs an eletric shock as opposed to fertilisation in iPA.

Menstrual Cycle

Where is Oestrogen produced? (1 mark)

Ovaries

What does Oestrogen do in the cycle? (1 mark)

Inhibits further production of FSH.

Fish (2 marks)

-light makes it easier to see in the dark, so can easily catch prey to survive.
-Makes fish attracted to the light and therefore, can easily find it's nemo.

Which cell in the liver produces enzyme? (1 mark)

Ribosome.

How does stains help? (1 mark)

By lowering the LDL produced by the liver.

Credits go to Grecko242 in helping once again. Have a good day.
For the sea weed one, could you not say how it was due to respiration as the air in the sea weed would be used in respiration to produce energy and then could be used for growth and movement ?
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snowiexo
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Is that the whole thing
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gecko242
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(Original post by Dave_PETERPHILE)
Oi listen dickface, there is a few answers that are not even close to the correct answers, what are you a massive cuntface?
Hey, calm down. Either clear troll or just arrogant, we are here to help.
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snowiexo
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(Original post by Dave_PETERPHILE)
Oi listen dickface, there is a few answers that are not even close to the correct answers, what are you a massive cuntface?
Which ones
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Alexanfiorenza
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(Original post by willetts99)
It wasn't because ribosomes synthesis proteins and an enzyme is a protein
The question was what CONTROLS the production of the enzyme. Therefore it is the NUCLEUS
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willetts99
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(Original post by Alexanfiorenza)
The question was what CONTROLS the production of the enzyme. Therefore it is the NUCLEUS
It asked where they were made in the liver cell
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eza11
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(Original post by Decklan)
Thalidomide & Drug testing

What's thalidomide now used for? (1 mark)

Leprosy

What's the minimum years? (1 mark)

6 years.

Minimum range? (1 mark)

1120-5600

Why do legal non-prescribed drugs have the greatest affect on the population? (2 marks)
-Because most of the population take legal non prescribed drugs
-Due to it being easily available over counter.

Why are trials done? (1 mark)

-Check dosage
-Check for toxicity
-Check to see if the drug actually does what it was made to do.

Blah blah blah something about why do you get dependant on a drug or on those lines was last question of the page (1 mark)

Changes body chemistry, making you addicted which makes you dependant on that drug.

Carbon cycle

Process x? (1 mark)

Photosynthesis.

Tonne of carbon from respiration released to air? (1 mark)

140

Why are scientists concerned? (1 mark)

Because there's an overall increase in carbon.

Weed killer

Control variable (1 mark)
-Volume of solution
-Type of weed killer
-Type of flower?

Why does he think it was anomalous?(1 mark)

Because there was an increase of number of daisies after using the weed killer.

Why did he use 0 arbitrary units of concentration?(1 mark)

Acts as a control.

Why is his conclusion about using 100 arbitrary units of concentration seemingly wrong? (1 mark)

Because using a lower concentration of 80 gave the same result.

Auxins (6 mark)
-Shoots grow towards light, auxins accumulate on darker side and bend the shoot towards the light.
-Shoots grow against gravity, auxins accumulate on lower side and bend the shoot upwards.
-Roots grow towards gravity, so roots grow downwards
.-Roots, hydrotropism, grow towards moist areas.

Sea Weed (3 marks)

Air in the bladder contain carbon dioxide which is needed for photosynthesis, so more photosynthesis can be done and therefore more growth. This answer is closer to the spec as it gets but the other alternative which most people put:

Air means less dense and can float on the surface taking light energy for photosynthesis.

Birds

Three reasons why shallow sparrows are not as common as blackbirds? (3 marks)
-There was a greater percentage of blackbirds seen in a garden.
-Blackbirds may come at different times so not counted.
-May not be the season for blackbird.

Two reasons why goldfinch birds increased in 2012? (2 marks)
-Less predators.
-More prey.
-Migrated from a different place.

Percentage change (2 mark)

33.5 x 1.8 = 60.3

Immune system

What's a pathogen? (1 mark)

a bacterium, virus, or other microorganism that can cause disease.How do doctors stop resistance of bacteria?( 2 marks)

Advice patients to not overuse antibiotics and complete their course, to prevent mutation of bacteria to become resistant.

Temperature (2 marks)

40 degrees.Because at this temperature there will be the fastest growth of bacteria.

The nervous system

What's a receptor? (2 marks)

Detects stimuli which sends impulses to neurones.

Table (4 marks)
Effector: Muscle, response: Contract
Effector: Gland, response: secretes hormone.

Genetics

What's a gene? (1 mark)

A gene codes for a specific protein which concurs to a characteristic.

Similar and differences between adult cell cloning and iPA (4 marks)

Similar: Both use a skin cell, and a suroogate mother.
Difference: Adult cell cloning takes a nucleus out and needs an eletric shock as opposed to fertilisation in iPA.

Menstrual Cycle

Where is Oestrogen produced? (1 mark)

Ovaries

What does Oestrogen do in the cycle? (1 mark)

Inhibits further production of FSH.

Fish (2 marks)

-light makes it easier to see in the dark, so can easily catch prey to survive.
-Makes fish attracted to the light and therefore, can easily find it's nemo.

Which cell in the liver produces enzyme? (1 mark)

Ribosome.

How does stains help? (1 mark)

By lowering the LDL produced by the liver.

Credits go to Grecko242 in helping once again. Have a good day.


for the control variable could you not say same one field was tested on?
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Not_a_horse
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For the Goldfinch question, you could also say the other birds decreased so the finches had less competitors.
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Alexanfiorenza
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(Original post by willetts99)
It asked where they were made in the liver cell, douche
Well considering every cell has a nucleus.
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Decklan
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(Original post by Not_a_horse)
For the Goldfinch question, you could also say the other birds decreased so the finches had less competitors.
That's what it means when "Less competitors" is said.
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snowiexo
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Guys how many ums do you think 48 will be
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partallaboutme
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(Original post by Not_a_horse)
For the Goldfinch question, you could also say the other birds decreased so the finches had less competitors.
The thing is it never said there was a decrease in ever of the other birds I said they could have developed another adaptation or an increase in food
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qwerzxcv1234569
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(Original post by willetts99)
It asked where they were made in the liver cell, douche
they asked where it would be controlled in a cell
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