MEDIUM
AS and A Level
IMPORTANT
Earn 100
Make a simple diagram to show the arrangement of the thick and thin filaments in a sarcomere of a resting muscle. Show and label the following: one thick filament, four thin filaments, and two Z lines.
Important Questions on Control and Coordination
EASY
AS and A Level
IMPORTANT
Draw a diagram to indicate and label the following: A band, I band and H band.
HARD
AS and A Level
IMPORTANT
The average length of a sarcomere in a resting muscle is 2.25 . Calculate the magnification of your diagram and state the steps you took in making the calculation.
MEDIUM
AS and A Level
IMPORTANT
LSs and TSs of striated muscle fibres were examined in an electron microscope. In the given picture shows drawings of the structures visible in a sarcomere in LS and TS as seen in a TEM. Explain why an electron microscope rather than a light microscope was used to study these sections.
MEDIUM
AS and A Level
IMPORTANT
Name the structures A, B, and C in the given figure.
MEDIUM
AS and A Level
IMPORTANT
Name the regions of the sarcomere labelled D, E and F in the given figure.
HARD
AS and A Level
IMPORTANT
State the region of the sarcomere where the TS was taken as shown in the given figure.
HARD
AS and A Level
IMPORTANT
Explain how the sliding of filaments in a sarcomere leads to the contraction of a muscle fibre.
MEDIUM
AS and A Level
IMPORTANT
Describe the similarities and differences between the structure and function of interneuronal synapses and neuromuscular junctions.
