ACSM 030-444 Exam - Topic 5 Question 9 Discussion

Actual exam question for ACSM's 030-444 exam

Question #: 9
Topic #: 5

[All 030-444 Questions]

Which muscle protein contains many cross-bridges?

AMyofibril.

BSarcomere.

CTroponin.

DMyosin.

Show Suggested Answer

Suggested Answer: D

by Justine at May 06, 2025, 01:39 AM

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Abel

5 months ago

Really? I thought troponin played a bigger role in that.

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Tamie

5 months ago

Totally agree, it's all about those myosin heads.

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Erick

6 months ago

Wait, isn't it the sarcomere that has the cross-bridges?

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Jacquelyne

6 months ago

Nope, definitely myosin. Can't believe that's even a question!

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Dorthy

6 months ago

Myosin has the most cross-bridges!

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Dannette

6 months ago

I keep mixing up troponin and myosin. I know troponin regulates contraction, but does it have cross-bridges too?

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Georgiann

7 months ago

I practiced a question like this before, and I think it was myosin that had the most cross-bridges. It makes sense with how muscle contraction works.

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Devora

7 months ago

I’m not entirely sure, but I remember something about sarcomeres being the functional units of muscle fibers. Could they be involved?

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Laurel

7 months ago

I think the answer might be myosin because it’s known for forming cross-bridges during muscle contraction, right?

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Carlene

7 months ago

The question is asking about the muscle protein with the cross-bridges, so I'm pretty confident the answer is D. Myosin.

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Fannie

7 months ago

Myosin is the muscle protein that has the cross-bridges, so I'm going to go with D.

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Frankie

8 months ago

Hmm, I'm not sure about this one. I'll have to think it through carefully before answering.

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Ben

8 months ago

I think the answer is B. Sarcomeres contain the cross-bridges that allow muscle contraction.

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Paul

11 months ago

Actually, the correct answer is D) Myosin because it forms the cross-bridges in muscle contraction.

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Stephane

12 months ago

I'm not sure, but I think it's B) Sarcomere.

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Valda

12 months ago

I agree with Gwenn, myosin has many cross-bridges.

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Patria

1 year ago

Seriously, if you don't know Myosin is the answer, you might as well just hang up your lab coat and become a professional couch potato.

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Franchesca

11 months ago

No doubt about it, Myosin is the one with many cross-bridges.

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Lemuel

11 months ago

Exactly, Myosin is a key muscle protein with cross-bridges.

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Kattie

11 months ago

Myosin is the answer. It contains many cross-bridges.

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Sarah

11 months ago

D) Myosin.

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Boris

11 months ago

C) Troponin.

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Jodi

11 months ago

B) Sarcomere.

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Nguyet

12 months ago

A) Myofibril.

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Gwenn

1 year ago

I think the answer is D) Myosin.

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Beckie

1 year ago

Myosin, no doubt. It's like the muscle's secret weapon, with all those cross-bridges ready to go.

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Evelynn

1 year ago

Is this a trick question? Myosin is the answer, hands down. Who doesn't know that?

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Haydee

11 months ago

I agree, Myosin is the answer without a doubt.

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Maile

11 months ago

Yeah, it's not a trick question. Myosin is the correct answer.

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Raina

12 months ago

Myosin is definitely the muscle protein with many cross-bridges.

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Claudia

1 year ago

Myosin, of course! That's the thick filament that forms all those cross-bridges. Easy peasy.

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Alecia

11 months ago

I always remember it by thinking of myosin as the 'mighty' protein with all those cross-bridges.

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Eric

11 months ago

Yes, you're right! Myosin is the muscle protein that contains many cross-bridges.

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Brande

11 months ago

Myosin, of course! That's the thick filament that forms all those cross-bridges. Easy peasy.

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Arthur

11 months ago

That's right! Myosin is the muscle protein that contains many cross-bridges.

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Mammie

1 year ago

Yes, myosin is the correct answer. It contains many cross-bridges.

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Tori

1 year ago

Myosin, of course! That's the thick filament that forms all those cross-bridges. Easy peasy.

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