Multiple choice

Histone proteins are present in:

  1. nucleus

  2. mitochondria

  3. plastids

  4. endoplasmic reticulum

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A Correct answer
Explanation

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The chromatin reticulum is made up of DNA which is the genetic material and  associated histone proteins. The nucleoplasm consists of more than 90% proteins, RNA and phospholipids.