Cytological examination of resting and contracted muscle provides important support for our current model for how skeletal muscle contracts. This evidence includes the observation that during contraction the

A) Z lines move farther apart.
B) lengths of the thick and thin filaments change significantly.
C) microtubules disassemble.
D) muscle fibers change color.
E) H zone becomes smaller.


E) H zone becomes smaller.

Biology & Microbiology

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If cell walls or are not perforated,

a. xylem and phloem will not be able to function as vascular tissue. b. gas exchange will not occur across the stomata. c. water will not enter the epidermal cells of the root. d. the terminal bud will not cause the stem to elongate. e. all of these will occur.

Biology & Microbiology

All life is made up of complex molecules built on a framework of ________ atoms

Fill in the blank(s) with correct word

Biology & Microbiology

The species within a guild are unlikely to interact with one another

Indicate whether the statement is true or false

Biology & Microbiology

Developed the vaccine for small pox

What will be an ideal response?

Biology & Microbiology