AQA GCSE BIOLOGY Higher Tier Paper 1 JUNE 2024
QUESTION PAPER with good questions
,Specialised Cells - <<answer>>..sperm, nerve and
muscle cells
Tissues - <<answer>>..a group of cells with a similar
structure and function that all work together to do a job
Organs - <<answer>>..a group of tissues which work
together to perform a specific function
Organ Systems - <<answer>>..a group of organs that
work together to do a specific job
Organism - <<answer>>..a group of organ systems
working together
Enzymes - <<answer>>..Catalysts for chemical reactions
in living things
Lock and Key Theory - <<answer>>..Theory of enzyme
catalysis stating that the active site's structure is
complementary to the structure of the substrate.
Denaturing - <<answer>>..changing the conformation of a
protein through, pH, temperature, or salt concentration
changes
Left and Right Atria - <<answer>>..receive blood from the
veins
,Left and Right Ventricles - <<answer>>..pump the blood
out into the arteries
Passage of the Blood through the heart - <<answer>>..-
blood enters the heart through the atria
-the atria contract and force blood into the ventricles
-the ventricles then contract and force blood out of the
heart
-valves then make sure the blood is flowing in the right
direction
Pacemakers - <<answer>>..the natural resting heart rate
is controlled by a group of cells (in the right atrium) which
act like a pacemaker. artificial pacemakers are electrical
devices used to correct irregularities in heart rate.
Gaseous Exchange - <<answer>>..The heart sends blood
to the lungs via the pulmonary artery.
Air obtained by breathing reaches the lungs through the
trachea (windpipe).
The trachea divides into two tubes - the bronchi.
The bronchi divide to form bronchioles.
The bronchioles divide until they end in tiny air sacs called
alveoli.
There are millions of alveoli and they are adapted to be
very efficient at exchanging oxygen and carbon dioxide:
- they have a large, moist surface area
- they have a very rich blood supply
- they are very close to the blood capillaries, so the
distance for gases to diffuse is small.
, The blood is taken back to the lungs through the
pulmonary vein.
Specialised Cells - <<answer>>..sperm, nerve and
muscle cells
Tissues - <<answer>>..a group of cells with a similar
structure and function that all work together to do a job
Organs - <<answer>>..a group of tissues which work
together to perform a specific function
Organ Systems - <<answer>>..a group of organs that
work together to do a specific job
Organism - <<answer>>..a group of organ systems
working together
Enzymes - <<answer>>..Catalysts for chemical reactions
in living things
Lock and Key Theory - <<answer>>..Theory of enzyme
catalysis stating that the active site's structure is
complementary to the structure of the substrate.
Denaturing - <<answer>>..changing the conformation of a
protein through, pH, temperature, or salt concentration
changes
QUESTION PAPER with good questions
,Specialised Cells - <<answer>>..sperm, nerve and
muscle cells
Tissues - <<answer>>..a group of cells with a similar
structure and function that all work together to do a job
Organs - <<answer>>..a group of tissues which work
together to perform a specific function
Organ Systems - <<answer>>..a group of organs that
work together to do a specific job
Organism - <<answer>>..a group of organ systems
working together
Enzymes - <<answer>>..Catalysts for chemical reactions
in living things
Lock and Key Theory - <<answer>>..Theory of enzyme
catalysis stating that the active site's structure is
complementary to the structure of the substrate.
Denaturing - <<answer>>..changing the conformation of a
protein through, pH, temperature, or salt concentration
changes
Left and Right Atria - <<answer>>..receive blood from the
veins
,Left and Right Ventricles - <<answer>>..pump the blood
out into the arteries
Passage of the Blood through the heart - <<answer>>..-
blood enters the heart through the atria
-the atria contract and force blood into the ventricles
-the ventricles then contract and force blood out of the
heart
-valves then make sure the blood is flowing in the right
direction
Pacemakers - <<answer>>..the natural resting heart rate
is controlled by a group of cells (in the right atrium) which
act like a pacemaker. artificial pacemakers are electrical
devices used to correct irregularities in heart rate.
Gaseous Exchange - <<answer>>..The heart sends blood
to the lungs via the pulmonary artery.
Air obtained by breathing reaches the lungs through the
trachea (windpipe).
The trachea divides into two tubes - the bronchi.
The bronchi divide to form bronchioles.
The bronchioles divide until they end in tiny air sacs called
alveoli.
There are millions of alveoli and they are adapted to be
very efficient at exchanging oxygen and carbon dioxide:
- they have a large, moist surface area
- they have a very rich blood supply
- they are very close to the blood capillaries, so the
distance for gases to diffuse is small.
, The blood is taken back to the lungs through the
pulmonary vein.
Specialised Cells - <<answer>>..sperm, nerve and
muscle cells
Tissues - <<answer>>..a group of cells with a similar
structure and function that all work together to do a job
Organs - <<answer>>..a group of tissues which work
together to perform a specific function
Organ Systems - <<answer>>..a group of organs that
work together to do a specific job
Organism - <<answer>>..a group of organ systems
working together
Enzymes - <<answer>>..Catalysts for chemical reactions
in living things
Lock and Key Theory - <<answer>>..Theory of enzyme
catalysis stating that the active site's structure is
complementary to the structure of the substrate.
Denaturing - <<answer>>..changing the conformation of a
protein through, pH, temperature, or salt concentration
changes
