Question

Match the skeletal muscle protein on the left with its function on the right.

A) binds along the length of thin filaments to regulate myosin head association
B) links thick filaments to Z line
C) stabilizes thin filaments
D) major component of thin filaments
E) bundles parallel arrays of actin filaments at Z line
F) major component of thick filaments
G) M line myosin filament-binding protein
H) mediates Ca₂₊ regulation of contraction
I) major protein of sarcoplasmic reticulum
J) attaches actin filaments to Z line

11) actin
12) myosin
13) tropomyosin
14) troponin
15) titin
16) nebulin
17) myomesin
18) α-actinin
19) Ca₂₊ -ATPase
20) CapZ

Answer 1

The skeletal muscle proteins can be matched with their functions by understanding their roles in muscle structure and contraction. For example, tropomyosin regulates myosin head association, while actin is a major component of thin filaments.

Step-by-step explanation:

To match the skeletal muscle proteins with their functions, we need to understand the roles these proteins play in muscle contraction and structure. Here's the correct association:

• A) tropomyosin - binds along the length of thin filaments to regulate myosin head association (13)
• B) myomesin - links thick filaments to Z line (17)
• C) nebulin - stabilizes thin filaments (16)
• D) actin - major component of thin filaments (11)
• E) α-actinin - bundles parallel arrays of actin filaments at Z line (18)
• F) myosin - major component of thick filaments (12)
• G) myomesin - M line myosin filament-binding protein (17)
• H) troponin - mediates Ca₂⁺ regulation of contraction (14)
• I) Ca₂⁺-ATPase - major protein of sarcoplasmic reticulum (19)
• J) CapZ - attaches actin filaments to Z line (20)