Hydrogen bonds form between the partially charged atoms of two polar molecules, such as the slightly positively charged hydrogen atom of one water molecule and the slightly negatively charged oxygen atom of another.
Answer the following statement true (T) or false (F)
True
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Groups of adjacent fibers bundled together into units are called ________. These bundles are surrounded by the proteins ________ and elastin as well as ________ that deliver nutrients to the muscle cells.
What will be an ideal response?
The structures within the muscle fiber that shorten to cause skeletal muscle fiber contraction are (the)
A) myofibrils. B) sarcoplasm. C) myoneural junctions. D) All of the answers are correct. E) None of the answers are correct.
Which of the following muscles is involved in inversion at the ankle joint?
A) extensor digitorum longus B) tibialis anterior C) fibularis (peroneus) longus D) fibularis (peroneus) tertius
Atoms in a covalent molecule
A) share electrons in triple pairs. B) share electrons in double pairs. C) can share electrons in single pairs, double pairs, or triple pairs. D) share electrons in single pairs. E) share electrons singly, never in pairs.