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What are Z-li...

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What are Z-line, I band, A band, H band

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Q. Differentiate between A-band and I-band.

Q. Identify the events occurring in muscular contraction;

(i) H-zone disappears

(ii) A band widens

(iii) I-band reduces in width

(iv) The width of A band is unaffected

(v) M-line and Z-line come closer

Q. Pick out the number of correct statements regarding muscle contraction-
i) length of

a

band remains
ii) length of

i

band decreases
iii)

Z

line are pulled to centre
iv)

M

line are remaining same

Which of the following statements are true about metals ?

(a) Valence band overlaps with conduction band

(b) The gap between valence band and conduction band is negligible

(c) The gap between valence band and conduction band connot be determined

(d) Valence band may remain partially filled

During muscular contraction, which of the following events occur?

(i) H – zone disappears (ii) A band widens

(iii) I – band reduces in width (iv) Width of A band is unaffected

(v) M line and Z line come closer

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