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vladimir1956 [14]
3 years ago
10

I need help on the second one

Biology
1 answer:
lubasha [3.4K]3 years ago
8 0

Answer:

preganglionic postganglionic neurons

Explanation:

carry impulses  throughout the body

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Myofibrils are made primarily of
Nadusha1986 [10]

Answer:

A) actin and myosin  is a correct answer.

Explanation:

  • Myofibrils are the contractile fiber and they are made of actin and myosin.
  • Myofibrils are made of thick myofilaments and thin myofilaments.
  • Thick myofilaments are made up of myosin whereas thin     myofilaments are composed of actin.
  • The functional unit of muscle is Myofibrils and contraction of muscle occurs due to myofibril, when the filaments actin and myosin interact with each other.

Thus Myofibrils are made primarily of (A) actin and myosin.

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Cytokinesis divides the two cells into four daughter cells.

Explanation:

Meiosis is a type of cell division in which a single cell is divided into four daughter cells. These daughter cells are haploid i. e. half number of chromosomes. This type of cell division occurs only in sex cells of male and female organisms. There are two phases of meiosis. In meiosis 1, a single cell is divided into two daughter cells while in meiosis 2, these two daughter cells again divided into four daughter cells.

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