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marusya05 [52]
2 years ago
10

Edpuzzle: Fermentation - Amoeba Sisters

Biology
1 answer:
kirill115 [55]2 years ago
4 0

Answer:

=amoeba sisters

Explanation:

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DNA is the genetic materail in ?
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A: Viruses, Prokaryotic, and eukaryotic cell all have dna as their genetic material

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Definition of surface tension and high specific heat​
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Explanation:

first one in the dictionary and the second one from reference.com

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A student wonders whether removing the nucleus from a cell would result in a new prokaryotic cell. Why would this procedure fail
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3 years ago
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You measure levels of Ca2+ in various locations within a motor neuron and a skeletal muscle fiber when the motor neuron is NOT d
gogolik [260]

Answer:

The correct answer is 3: "<em>High levels of Ca2+ are expected to be found </em><em>within the sarcoplasmic reticulum</em>".

Explanation:

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When a nerve impulse reaches the membrane of a muscle fiber, through acetylcholine release,  the membrane depolarizes producing the entrance of calcium from <u>extracellular space</u>. The impulse is transmitted along the membrane to the sarcoplasmic reticulum, from where calcium is released.  At this point, <em>tropomyosin is obstructing binding sites for myosin on the thin filament</em>. The calcium channel in the sarcoplasmic reticulum controls the ion release, that activates and regulates muscle contraction, by increasing its cytoplasmic levels. When <em>calcium binds to the troponin C</em>, <em>the troponin T alters the tropomyosin by moving it and then unblocks the binding sites,</em> making possible the formation of <em>cross-bridges between actin and myosin filaments.</em> When myosin binds to the uncovered actin-binding sites, ATP is transformed into ADP and inorganic phosphate.

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3 years ago
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