Question 1
Identify which of the following joints allows abduction and adduction movement.
Shoulder
Knuckle
Knee
Elbow
0%
DP IB Biology: HL
Topic Questions
11.2 Movement
Question 2
The diagram shows the structures in a human elbow.
Which numbers represent a pair of antagonistic muscles?
I and II
V and IV
VI and II
II and III
Question 3
Which row correctly identifies the features of the myofibril shown in the diagram.
| I. | II. | III. | IV. | |
| A | Z-line | Sarcomere | A-band | H-zone |
| B | H-zone | A-band | Z-line | I-band |
| C | Sarcomere | H-zone | I-band | Z-line |
| D | Sarcomere | I-band | A-band | Z-line |
Question 4
Which of the given options accurately identifies molecule X and describes its function?
X is troponin which provides binding sites for calcium ions
X actin which provides binding sites for myosin allowing cross-bridges to form
X is tropomyosin which changes shape to expose binding sites on actin filaments
X is ATP hydrolase enzyme used to release energy through hydrolysis of ATP to ADP and inorganic phosphate
Question 5
Which of the following explains the use of fluorescence to study muscle contraction?
- Fluorescent proteins can be injected into the muscles of organisms easily
- Fluorescent dyes can be attached to myosin fibres to demonstrate sliding filament theory
- Aequorin proteins bind to calcium ions and so are more visible during muscle contraction
I and III
I and II
I, II and III
II only
