Myofilaments or myofibrils are - Vidyadip

MCQ

Myofilaments or myofibrils are

A
Obliquely arranged filaments of muscle fibre
✓
Parallely arranged filaments of muscle fibre
C
Horizontally arranged filaments of muscle fibre
D
Radially arranged filaments of muscle fibre

✓

Answer

Correct option: B.

Parallely arranged filaments of muscle fibre

b
Parallely arranged filament of muscle fibre. Each muscle fibre is lined by the plasma membrane called sarcolemma enclosing the sarcoplasm. Muscle fibre is a syncitium as the sarcoplasm contains many nuclei. The endoplasmic reticulum, $i.e.$, sarcoplasmic reticulum of the muscle fibres is the store house of calcium ions. A characteristic feature of muscle fibre is the presence of large number of parallely arranged filaments in the sarcoplasm called myofilaments or myofibrils

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Factor affecting the Hardy-Weinberg principles are

$I.$ gene flow

$II.$ genetic drift

$III.$ mutation

$IV.$ genetic recombination

$V.$ natural selection

The correct combination is

Human skin colour is the example of

$I.$ multiple gene inheritance

$II.$ three separate genes controlling this trait

$III.$ single gene controlling this trait

$IV.$ two gene controlling this trait

$V.$ environment plays a significant role in this trait

Choose the correct option

Select the correct statement.

Which of the following is an insect

Oxygenated blood is carried by

Which would be the heart rate of a person if the cardiac output is $5\; \mathrm{L},$ blood volume in the ventricles at the end of diastole is $100 \;\mathrm{mL}$ and at the end of ventricular systole is $50\; \mathrm{mL} ?$

Statement I: Ammonia is the most toxic form of nitrogenous waste which require least amount of water for its elimination.
Statement II: Urea is the least toxic form of nitrogenous waste, can be removed with a minimum loss of water.

$QRST$ is related with

$A$ : Castration cannot be considered as a contraception option.
$R$ : It should in no way interfere with the sexual drive, desire and/or the sexual act of the user