AQA Alevel Biology Paper 3 Essay Plans
Give 5 bullet points on the essay for the importance of nitrogen-containing substances in
biological systems. - correct answer-- Photosynthesis (Nitrogen is a major component of
chlorophyll)
- Nitrogen cycle
- Proteins and enzymes
- Regulation of transcription and translation.
- Control of blood glucose (and peptide/protein hormones).
Give 5 bullet points on the essay for the importance of diffusion in organisms. - correct
answer-- Synaptic transmission.
- Homeostasis (Control of blood water potential/glucose)
- Respiration.
- Gas exchange.
- Photosynthesis (Diffusion of carbon dioxide into the stomata)
Give 5 bullet points on the essay for the importance of the control of movement in cells and
organisms. - correct answer-- Control of heart rate.
- Synaptic transmission.
- Control of blood glucose/water potential.
- Photosynthesis.
- Respiration.
Give 5 bullet points on the essay for the importance of interactions between cells and
between organisms. - correct answer-- Species and taxonomy (Courtship behaviour).
- Synaptic transmission.
- Receptors (Eyes).
- Mass transport in plants (Xylem and phloem).
- Control of blood glucose/water potential.
Give 5 bullet points on the essay for the importance of DNA as an information-carrying
molecule and its use in gene technologies. - correct answer-- Recombinant DNA technology.
- Genetic fingerprinting.
- Gene expression and cancer.
- DNA replication in interphase and binary fission.
- Structure of DNA.
Give 5 bullet points on the essay for the importance of bonds and bonding in organisms. -
correct answer-- Recombinant DNA technology.
- Mass transport in plants.
- Synaptic transmission.
- Respiration.
- Gene expression and cancer.
Give 5 bullet points on the essay for the importance of nitrogen-containing substances in
biological systems. - correct answer-- Photosynthesis (Nitrogen is a major component of
chlorophyll)
- Nitrogen cycle
- Proteins and enzymes
- Regulation of transcription and translation.
- Control of blood glucose (and peptide/protein hormones).
Give 5 bullet points on the essay for the importance of diffusion in organisms. - correct
answer-- Synaptic transmission.
- Homeostasis (Control of blood water potential/glucose)
- Respiration.
- Gas exchange.
- Photosynthesis (Diffusion of carbon dioxide into the stomata)
Give 5 bullet points on the essay for the importance of the control of movement in cells and
organisms. - correct answer-- Control of heart rate.
- Synaptic transmission.
- Control of blood glucose/water potential.
- Photosynthesis.
- Respiration.
Give 5 bullet points on the essay for the importance of interactions between cells and
between organisms. - correct answer-- Species and taxonomy (Courtship behaviour).
- Synaptic transmission.
- Receptors (Eyes).
- Mass transport in plants (Xylem and phloem).
- Control of blood glucose/water potential.
Give 5 bullet points on the essay for the importance of DNA as an information-carrying
molecule and its use in gene technologies. - correct answer-- Recombinant DNA technology.
- Genetic fingerprinting.
- Gene expression and cancer.
- DNA replication in interphase and binary fission.
- Structure of DNA.
Give 5 bullet points on the essay for the importance of bonds and bonding in organisms. -
correct answer-- Recombinant DNA technology.
- Mass transport in plants.
- Synaptic transmission.
- Respiration.
- Gene expression and cancer.
