Question

match the items.

a. protein myosin
b. z lines or z discs
c. proteins actin, tropomyosin, and troponin
d. myosin only

1. thin myofilament is made of
2. a thick myofilament is made of
3. a sarcomere is located betwwen 2
4. h zome is made of

Explanation:

Identify thin myofilament composition

Using the Sarcomere Structure knowledge point

• Thin filaments consist of actin, tropomyosin, and troponin.
• This corresponds to item c.

Identify thick myofilament composition

Using the Sarcomere Structure knowledge point

• Thick filaments consist primarily of the protein myosin.
• This corresponds to item a.

Determine sarcomere boundaries

Using the Sarcomere Structure knowledge point

• A sarcomere is defined as the region between two adjacent Z lines (or Z discs).
• This corresponds to item b.

Identify H zone composition

Using the Sarcomere Structure knowledge point

• The H zone is the central region of the A band containing only thick filaments (myosin) without overlapping thin filaments.
• This corresponds to item d.

Answer:

Question 1

• (a) Protein myosin
• (b) Z lines or Z discs
• (c) Proteins actin, tropomyosin, and troponin (Correct answer)
• (d) Myosin only

Question 2

• (a) Protein myosin (Correct answer)
• (b) Z lines or Z discs
• (c) Proteins actin, tropomyosin, and troponin
• (d) Myosin only

Question 3

• (a) Protein myosin
• (b) Z lines or Z discs (Correct answer)
• (c) Proteins actin, tropomyosin, and troponin
• (d) Myosin only

Question 4

• (a) Protein myosin
• (b) Z lines or Z discs
• (c) Proteins actin, tropomyosin, and troponin
• (d) Myosin only (Correct answer)