GCSE BIOLOGY (9–1): HIGHER TIER
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ What must you have for the GCSE Biology Higher Tier Paper 1H?.
Answer: A ruler and a scientific calculator.
◍ What should you use to write your answers in the exam?.
Answer: Black ink or black ball-point pen; pencil should only be used for
drawing.
◍ What is the maximum mark for the GCSE Biology Higher Tier Paper 1H?.
Answer: 100 marks.
◍ Cell.
Answer: The basic unit of life in all living organisms.
◍ Eukaryotic Cell.
Answer: A cell with a nucleus and membrane-bound organelles (e.g., plant
and animal cells).
◍ What is a tissue in the context of plant biology?.
Answer: A group of cells that work together to perform a specific function.
◍ What type of tissue in plants contains stem cells?.
Answer: Meristematic tissue.
◍ From which plant does aspirin originate?.
Answer: Willow tree.
◍ Prokaryotic Cell.
Answer: A cell without a nucleus, where the DNA is free in the cytoplasm
(e.g., bacteria).
,◍ Cytoplasm.
Answer: A jelly-like substance where most chemical reactions occur.
◍ Why do scientists usually extract chemical A from the berries of the deadly
nightshade plant?.
Answer: Berries contain a higher concentration of chemical A compared to
leaves or roots.
◍ Ribosome.
Answer: The site of protein synthesis.
◍ What is the mass of chemical A found in the leaves of the deadly nightshade
plant if it is 60% of the mass shown in Table 1?.
Answer: 0.72 grams (since leaves contain 1.2 grams in 100g of plant tissue).
◍ How do you calculate the mass of chemical A in 200 g of leaves with
chlorosis?.
Answer: Calculate 60% of 1.2 grams (0.72 grams) and then find the amount
in 200 grams: (0.72g/100g) * 200g = 1.44 grams or 1440 mg.
◍ What is chlorosis in plants?.
Answer: A condition where leaves produce insufficient chlorophyll, leading
to yellowing.
◍ Why is it important for drugs to be tested in clinical trials before public
use?.
Answer: To ensure safety and efficacy.
◍ What is one reason a report about chemical A may be biased?.
Answer: It may be funded by a company with a vested interest in the drug.
◍ How can scientists validate claims about new drugs?.
Answer: Through rigorous clinical trials and peer-reviewed studies.
◍ Cell Wall.
Answer: A rigid structure made of cellulose in plant cells that provides
support and shape.
◍ What should you do if you need extra space for your answers in the exam?.
, Answer: Use the lined pages at the end of the exam book and write the
question number against your answers.
◍ Vacuole.
Answer: A large, central sac in plant cells filled with cell sap for storage and
support.
◍ What should you do with any rough work in the exam?.
Answer: Do all rough work in the exam book and cross through any work
you do not want marked.
◍ What is the significance of showing your work in calculations during the
exam?.
Answer: It allows examiners to follow your reasoning and award partial
credit if necessary.
◍ What is the time allowed for the GCSE Biology Higher Tier Paper 1H?.
Answer: 1 hour and 45 minutes.
◍ Specialised Cells.
Answer: Cells adapted to perform a specific function, such as red blood cells
or root hair cells.
◍ Stem Cell.
Answer: An undifferentiated cell that can divide and develop into different
types of cells.
◍ What is the candidate expected to declare in the exam?.
Answer: That the work submitted is their own.
◍ Microscope.
Answer: An instrument used to magnify small objects like cells.
◍ What is chlorosis a symptom of in plants?.
Answer: Nutrient deficiency or environmental stress.
◍ What is the role of stem cells in plant tissue?.
Answer: They can differentiate into various types of cells needed for growth
and repair.
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ What must you have for the GCSE Biology Higher Tier Paper 1H?.
Answer: A ruler and a scientific calculator.
◍ What should you use to write your answers in the exam?.
Answer: Black ink or black ball-point pen; pencil should only be used for
drawing.
◍ What is the maximum mark for the GCSE Biology Higher Tier Paper 1H?.
Answer: 100 marks.
◍ Cell.
Answer: The basic unit of life in all living organisms.
◍ Eukaryotic Cell.
Answer: A cell with a nucleus and membrane-bound organelles (e.g., plant
and animal cells).
◍ What is a tissue in the context of plant biology?.
Answer: A group of cells that work together to perform a specific function.
◍ What type of tissue in plants contains stem cells?.
Answer: Meristematic tissue.
◍ From which plant does aspirin originate?.
Answer: Willow tree.
◍ Prokaryotic Cell.
Answer: A cell without a nucleus, where the DNA is free in the cytoplasm
(e.g., bacteria).
,◍ Cytoplasm.
Answer: A jelly-like substance where most chemical reactions occur.
◍ Why do scientists usually extract chemical A from the berries of the deadly
nightshade plant?.
Answer: Berries contain a higher concentration of chemical A compared to
leaves or roots.
◍ Ribosome.
Answer: The site of protein synthesis.
◍ What is the mass of chemical A found in the leaves of the deadly nightshade
plant if it is 60% of the mass shown in Table 1?.
Answer: 0.72 grams (since leaves contain 1.2 grams in 100g of plant tissue).
◍ How do you calculate the mass of chemical A in 200 g of leaves with
chlorosis?.
Answer: Calculate 60% of 1.2 grams (0.72 grams) and then find the amount
in 200 grams: (0.72g/100g) * 200g = 1.44 grams or 1440 mg.
◍ What is chlorosis in plants?.
Answer: A condition where leaves produce insufficient chlorophyll, leading
to yellowing.
◍ Why is it important for drugs to be tested in clinical trials before public
use?.
Answer: To ensure safety and efficacy.
◍ What is one reason a report about chemical A may be biased?.
Answer: It may be funded by a company with a vested interest in the drug.
◍ How can scientists validate claims about new drugs?.
Answer: Through rigorous clinical trials and peer-reviewed studies.
◍ Cell Wall.
Answer: A rigid structure made of cellulose in plant cells that provides
support and shape.
◍ What should you do if you need extra space for your answers in the exam?.
, Answer: Use the lined pages at the end of the exam book and write the
question number against your answers.
◍ Vacuole.
Answer: A large, central sac in plant cells filled with cell sap for storage and
support.
◍ What should you do with any rough work in the exam?.
Answer: Do all rough work in the exam book and cross through any work
you do not want marked.
◍ What is the significance of showing your work in calculations during the
exam?.
Answer: It allows examiners to follow your reasoning and award partial
credit if necessary.
◍ What is the time allowed for the GCSE Biology Higher Tier Paper 1H?.
Answer: 1 hour and 45 minutes.
◍ Specialised Cells.
Answer: Cells adapted to perform a specific function, such as red blood cells
or root hair cells.
◍ Stem Cell.
Answer: An undifferentiated cell that can divide and develop into different
types of cells.
◍ What is the candidate expected to declare in the exam?.
Answer: That the work submitted is their own.
◍ Microscope.
Answer: An instrument used to magnify small objects like cells.
◍ What is chlorosis a symptom of in plants?.
Answer: Nutrient deficiency or environmental stress.
◍ What is the role of stem cells in plant tissue?.
Answer: They can differentiate into various types of cells needed for growth
and repair.
