What is true about genetic material of a prokaryotic cell ? (A) Lacks histones (B) Not enceloped by nuclear membrane (C) Composed of a single circular DNA molecule (D) All of these
Answer: D In prokaryotes, the genetic material consists ofd single circular DNA molecule lying entanglend in nucleoid. It is not bounded by a definite nuclear membrane. Histones are water-solble proteins rich in arginine and lysine that help in DNA packaging in chromosomes. Prokaryotic cells lack histone proteins.
Select the correct pair out of the following (A) Hypostomatic leaf-dicots (B) epistomatic leaf-monocots (C) amphistomatic leaf-free-floating hydrophytes (D) presence of sunken stomata in leaf-submerged hydrophytes
The type of muscle present in our (A) heart is involuntary and unstirated smooth (B) intestine is striated and involuntary (C) thigh is striated and voluntary (D) upper arm is smooth muscle and fusiform in