Actin filament is made up of - Vidyadip

MCQ

Actin filament is made up of

✓
Actin, troponin and tropomyosin
B
Actin, troponin
C
Myosin, troponin
D
Actin, tropomyosin

✓

Answer

Correct option: A.

Actin, troponin and tropomyosin

a
(a) One thin filament probably contains $300-400$ actin molecules about $50$ tropomyosin and $50$ troponin.

It is said that tropomyosin plays a vital role in sensitizing the contractile proteins $(actin\ and\ myosin) $ to calcium ions.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 11 - 17. Locomotion and movement→STD 11 - 17. Locomotion and movement — all question types→BIOLOGY STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Match the Column$-I$ with Column$-II$

Column$-I$	Column$-II$
$(a)$ Golgi apparatus	$(i)$ Synthesis of protein
$(b)$ Lysosomes	$(ii)$ Trap waste and excretory products
$(c)$ Vacuoles	$(iii)$ Formation of glycoproteins and glycolipids
$(d)$ Ribosomes	$(iv)$ Digesting biomolecules

Choose the right match from options given below

Which one of the following is a $C_4$ plant?

If a person exhales out forcefully by applying all his efforts. What will the pulmonary volume inhaled by him immediately under normal condition without applying any extra effort?

Collenchyma differs from parenchyma in having.

Sexual reproduction in algae results in the formation of

Assertion : Cyclic pathway of photosynthesis first appeared in some eubacterial species.

Reason : Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved.

Scientific name of wheat.

Which of the following occurs only in meiosis:

Which of the following statements is correct?

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.