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lawyer [7]
3 years ago
11

The cross bridge cycle starts when _________.

Biology
1 answer:
docker41 [41]3 years ago
6 0
The cross bridge cycle starts when myosin attaches to actin in a muscle cell. The process involves the initial loading of myosin with potential energy, allowing it to bind to actin. Once myosin binds, potential energy is released and the myosin's head shape changes, causing the filament to be pulled to the sacromere. This is known as the working stroke in muscular contraction.
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Which air mass often originates as a different air mass in siberia and is subsequently altered?
podryga [215]
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3 years ago
The bones in the wings of birds and bats are _______ because they derived from a _______ ancestor, while the wings are _______ t
dolphi86 [110]
The answer is: homologous; common; homoplastic.

<span>The bones in the wings of birds and bats are <u>homologous</u> because they derived from a <u>common</u> ancestor, while the wings are <u>homoplastic</u> traits. Homologous structures are similar structures shared by different groups and that are derived from a common ancestor. The similar anatomy of bones in the wings of birds and bats is inherited from a common ancestor of tetrapods (to which birds and bats belong). However, wings are not inherited from the common ancestor of birds and bats. Therefore, wins are homoplastic traits (analogous structures) because they have similar function but they are not inherited from the common ancentor.</span>
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3 years ago
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Natali [406]
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5 0
3 years ago
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What is the function of mRNA (messenger RNA)?(1 point)
ivanzaharov [21]

Answer:

Messenger RNA(mRNA) carries the genetic information of a portion of DNA needed to make a protein. Transfer RNA(tRNA) is also important for protein formation, as it binds to mRNA and amino acids and is crucial for translation.

Explanation:

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