AQA biology combined higher paper 1

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lolyrmum
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AQA biology combined higher paper 1
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lolyrmum
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stuff that came up -

which vessel carries blood from the heart to the lungs?

where is the pacemaker situated in the heart

calculation for stroke volume(they give the equation in the paper)

The effect of beta blockers( which slow heart rate) on breathing during exercise (6 marker)

where does digitalis originate from? (infection and response- discovery of drugs)

what type of disease is malaria(virus, protists..)

describe two methods to prevent malaria and explain them

test for starch and sugar

experiment testing digestion( starch and amylase are put into a partially permeable membrane, which is then put into a beaker of water). The membrane and water represent parts of the digestive system. you have to describe what is happening at each of 4 stages.

describe the differences between prokaryotes and eukaryotes

limitations of diffusion in multicellular organisms vs a bacterial cell. you have to calculate surface area too (5 marker)

a experiment where scientists grow bacteria in a culture bottle. at the beginning enough nutrients are provided.
the bottle is placed sideways and there are holes in the cap.
why are there holes in the cap of the culture bottle?
there is a graph showing the growth of bacteria over time. it stays the same, then increases, then stays the same for a bit, and then decreases. describe what is happening at each part of the graph(labelled A,B,C and D)

potometer experiment on water intake in plant shoot (photosynthesis and root cells)
calculate the rate of water intake (mm3/min)

a magnification question and then a bunch of 3&4 markers on magnification

there is a plotting data and line of best fit question somewhere in there.

q5- experiment on the uptake of nitrate ions by seedling with oxygen provide and just air(w/ oxygen)
active transport
how do nitrate ions help plants grow
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Matthew Griffy
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What did you guys do for the cube question
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GCSE2021234
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I’m currently doing this paper as revision for my mocks (I’m in year 10)I am unsure on Few questions of someone would might helping.
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