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GCSE EDEXCEL BIOLOGY June 2024 - PAPER 2 Higher Tier Question Paper (1BI0/2H) [VERIFIED]
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GCSE EDEXCEL BIOLOGY June 2024 - PAPER 2 Higher Tier Question Paper (1BI0/2H) [VERIFIED]
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GCSE EDEXCEL BIOLOGY June 2024 - PAPER 2 Higher TierQuestion Paper (1BI0/2H) [VERIFIED]
In which type of cell would you find a cell wall, chloroplasts and a vacuole? - Answer;
plant cell
What does an animal cell have? - Answer; - cytoplasm
- nucleus
- ribosomes
- cell membrane
- mitochondria
What does the nucleus do? - Answer; contains genetic material that controls the
activities of the cell
What is the cytoplasm? - Answer; gel-like substance where most of the chemical
reactions happen. It contains enzymes which control these chemical reactions
What is the cell membrane - Answer; holds the cell together and controls what goes in
and out
What happens in the mitochondria? - Answer; these are where most of the reactions for
respiration take place. Respiration releases energy that the cell needs to work
What happens in the ribosomes? - Answer; these are where proteins are made in the
cell
What does a bacterial cell NOT have? - Answer; a nucleus- genetic material floats in the
cytoplasm
What is a yeast cell an example of? - Answer; a single cell organism
What does a yeast cell have? - Answer; - nucleus
- cytoplasm
- cell membrane
- surrounding cell wall
How is a leaf cell different from a yeast cell? - Answer; leaf cells have chloroplasts and
a cellulose cell wall. yeast cells have neither
What is the definition of diffusion? - Answer; the SPREADING OUT of PARTICLES from
an area of HIGH CONCENTRATION to an area of LOW CONCENTRATION
or
the NET MOVEMENT of PARTICLES down a CONCENTRATION GRADIENT
, GCSE EDEXCEL BIOLOGY June 2024 - PAPER 2 Higher Tier
Question Paper (1BI0/2H) [VERIFIED]
What substances can diffuse through cell membranes? - Answer; small molecules like
oxygen, glucose, amino acids and water
What substances can't diffuse through cell membranes? - Answer; big molecules like
starch and proteins
What are some examples of diffusion? - Answer; - the diffusion of oxygen into the cells
of the body from the bloodstream as the cells are respiring (and using up oxygen)
- the diffusion of carbon dioxide into actively photosynthesising plant cells
- the diffusion of simple sugars and amino acids for the gut through cell membranes
When, and in which direction, will diffusion take place in solutions and in gases? -
Answer; - if two solutions are separated by a cell membrane, particles will move from a
region of high concentration to a region of low concentration
- gases will also diffuse through the air from a region of high concentration to a region of
low concentration
How is a leaf cell adapted to carry out photosynthesis? - Answer; - the leaf has
mesophyll tissue
- the mesophyll cells contain chloroplasts which can photosynthesise
How are palisade cells adapted for photosynthesis? - Answer; - packed will chloroplasts
for photosynthesis
- tall shape means a lot of surface area exposed down the side for absorbing carbon
dioxide from the air in the leaf
- they are grouped together at the top of the leaf so that they can absorb more sunlight
How are red blood cells adapted to carry oxygen? - Answer; - concave shape gives a
big surface area for absorbing oxygen. it also helps them pass smoothly through
capillaries to reach body cells
- packed with haemoglobin which absorbs oxygen
- they have no nucleus to leave even more room for haemoglobin
How are sperm cells adapted for swimming to the egg? - Answer; - streamlined head
and flagella to help it swim to the egg
- there are a lot of mitochondria in the cell to provide the energy needed
- carry enzymes in their heads to digest through the egg cell membrane
If a cell has many mitochondria... - Answer; it must need a lot of energy, e.g. muscle
cell, sperm cell
, GCSE EDEXCEL BIOLOGY June 2024 - PAPER 2 Higher Tier
Question Paper (1BI0/2H) [VERIFIED]
If a cell has many ribosomes... - Answer; it is making a lot of protein, e.g. gland cells
which produce enzymes
If a cell has flagella.. - Answer; it must be able to move, e.g. sperm cells
What is the process by which cells become specialised? - Answer; differentiation
What is meant by the term differentiation of cells? - Answer; - when cells start to divide
they are very similar
- as the tissues develop the cells change to form particular function
What is a tissue? - Answer; a group of similar cells that work together to carry out a
particular function
What sort of tissue can you find in mammals? - Answer; - Epithelial tissue: covers some
parts of the body, e.g. the inside and outside of the gut
- Muscular tissue: contracts to move whatever its attached to
- Glandular tissue: makes and secretes chemicals like hormones and enzymes
What is an organ? - Answer; a group of different tissues that work together to perform a
certain function, e.g. stomach
What tissues are the stomach made up of and what are their purposes? - Answer; -
Epithelial tissue: covers the inside and outside of the stomach
- Muscular tissue: contracts the stomach wall to churn up the food
- Glandular tissue: produces digestive juices to digest food
What is an organ system? - Answer; a group of organs working together to perform a
particular function, e.g. the digestive system breaks down food
What organs does the digestive system include? - Answer; - glands
- the stomach
- the liver
- the small intestine
-the large intestine
What two glands produce digestive juices? - Answer; pancreas and salivary glands
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