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EleoNora [17]
2 years ago
9

HELP PLEASE//40POINTS AND I GIVE BRAINLIEST

Biology
2 answers:
Lisa [10]2 years ago
7 0

Answer:

I will put the answer in the Explanation.

Explanation:

  • Number of Normal Cells: 30 trillion
  • Shape of Cells of Normal Cells: Uniform
  • Number of Nuclei of Normal Cell: Spheroid shape, single nucleus
  • Amount of Cytoplasm of a Normal Cell:  Large cytoplasmic volume

  • Number of Cancerous Cells: We don't all have cancer cells in our bodies. Our bodies are constantly producing new cells, some of which have the potential to become cancerous. At any given moment, we may be producing cells that have damaged DNA, but that doesn't mean they're destined to become cancer.
  • Shape of Cancerous Cells: Irregular
  • Number of Nuclei in a Cancerous Cells: Multiple, enlarged nucleoli
  • Amount of Cytoplasm in a Cancerous Cell: Small cytoplasmic volume
ddd [48]2 years ago
7 0

Answer:

I will put the answer in the Explanation

Explanation:

  • Number of Normal Cells: 30 trillion
  • Shape of Cells of Normal Cells: Uniform
  • Number of Nuclei of Normal Cell: Spheroid shape, single nucleus
  • Amount of Cytoplasm of a Normal Cell:  Large cytoplasmic volume

  • Number of Cancerous Cells: We don't all have cancer cells in our bodies. Our bodies are constantly producing new cells, some of which have the potential to become cancerous. At any given moment, we may be producing cells that have damaged DNA, but that doesn't mean they're destined to become cancer.
  • Shape of Cancerous Cells: Irregular
  • Number of Nuclei in a Cancerous Cells: Multiple, enlarged nucleoli
  • Amount of Cytoplasm in a Cancerous Cell: Small cytoplasmic volume
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In rest, the tropomyosin inhibits the attraction strengths between myosin and actin filaments. Contraction initiates when an action potential depolarizes the inner portion of the muscle fiber. Calcium channels activate in the T tubules membrane, releasing <u>calcium into the sarcolemma.</u> At this point, tropomyosin is obstructing binding sites for myosin on the thin filament. When calcium binds to troponin C, troponin T alters the tropomyosin position by moving it and unblocking the binding sites. Myosin heads join to the uncovered actin-binding points forming cross-bridges, and while doing so, ATP turns into ADP and inorganic phosphate, which is released. Myofilaments slide impulsed by chemical energy collected in myosin heads, producing a power stroke. The power stroke initiates when the myosin cross-bridge binds to actin. As they slide, ADP molecules are released. A new ATP links to myosin heads and breaks the bindings to the actin filament.  Then ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, which starts a new binding cycle to actin. Finally, Z-bands are pulled toward each other, shortening the sarcomere and the I-band, producing muscle fiber contraction.

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