Difference between myosin and actin filaments, Biology

Assignment Help:

DIFFERENCES BETWEEN MYOSIN AND ACTIN FILAMENTS

 

 

Myosin filaments (primary filaments)

 

Actinfilaments (secondary filaments)

1.

Found only in A-band of sarcomere.

1.

Found in both A and I-bands.

2.

Thicker (0.01 mm) but longer (4.5 mm) than actin filaments.

2.

Thinner (0.005 mm) but shorter (2-2.6 mm)

than myosin filaments.

 

3.

 

More molecular weight.

 

3.

 

Less, molecular weight.

4.

Cross bridges present, hence have rough

4.

Cross bridges absent, hence have smooth

 

surface.

 

surface.

5.

Fewer than actin filaments.

5.

More numerous than myosin filaments, six of

 

 

6.

 

 

Free at both the ends.

 

 

6.

them surround each myosin filament.

 

Free at one end and are joined to Z-line by other end.

7.

Consist of 2 proteins: myosin and meromysm.

7.

Consist of 3 proteins: actin, tropomyosin and troponin.

8.

Do not slide during muscle contraction.

8.

Slide into H-zone during muscle contraction.


Related Discussions:- Difference between myosin and actin filaments

Explain wild-type fruitfly drosophila melanogaster, A cross among wild-type...

A cross among wild-type fruitfly Drosophila melanogaster  [normal bristles and grey body (s+s, e+ e)] with a mutant fly [short bristles and ebony body (ss ee)] produces following p

Explain the physical work capacity tests, Explain The physical work capacit...

Explain The physical work capacity tests? The physical work capacity tests include common tests like running staircases (Step test) or using a bicycle ergo meter or treadmill.

Advanced nervous systems - general trend in evolution, Advanced Nervous Sys...

Advanced Nervous Systems - General Trend In Evolution In higher groups of animals you will observe clear trends towards centralisation of the nervous system, to maximize effe

Explain how inhibition might contribute, We now understand that mutations t...

We now understand that mutations that cause the inhibition of apoptosis are found in tumors. Because proliferation itself is not induced by the inhibition of apoptosis, explain how

Amount of proteins present in the cell, Cells regulate their level of activ...

Cells regulate their level of activity by regulating the amount of proteins present in the cell at any given time, so an up regulation of enzymes would be expected to A. increase t

What is the average duration of each stage in hours, A biologist examines a...

A biologist examines a series of cells and counts 140 cells in interphase, 10 cells in metaphase, 4 cells in anaphase and 7 cells in telophase. if complete cell cycle requires 24 h

Define criteria for assessment of vitamin d status, Define Criteria for Ass...

Define Criteria for Assessment of Vitamin D Status? You may recall the events involved in calcium homeostasis described earlier in this section. We studied that sufficient 25-O

Determine the muscarinic acetylcholine receptors, Which of the following se...

Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Muscarinic Acetylcholine Receptors (mAChRs) in the SA

What are their respective modes of transmission, What are some human diseas...

What are some human diseases caused by bacteria and what are their respective modes of transmission? The major human bacterial infections transmitted by respiratory secretions

Compare different communities for conservation purpose, "Diversity is good"...

"Diversity is good" is one of the axioms of conservation biology. However in absentia of historical information, why is noting higher diversity in a system NOT the best way to eval

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd