GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Where is the DNA located in an eukaryotic cell?
A
Inside the nucleus
B
Floating in the cytoplasm
C
Inside the ribosomes
D
Moving along the ER
Explanation: 

Detailed explanation-1: -In eukaryotes, the cell’s genetic material, or DNA, is contained within an organelle called the nucleus, where it is organized in long molecules called chromosomes.

Detailed explanation-2: -The nucleus is particularly important among eukaryotic organelles because it is the location of a cell’s DNA.

Detailed explanation-3: -The DNA of eukaryotes is contained in the nucleus and organized into long strands. Each strand of DNA is called a chromosome. During the non-dividing phase of a cell’s life, called interphase, the DNA is condensed into a form called chromatin. Chromatin is made of DNA wrapped tightly around proteins called histones.

Detailed explanation-4: -DNA is normally found as a loosely contained structure called chromatin within the nucleus, where it is wound up and associated with a variety of histone proteins. When a cell is about to divide, the chromatin coils tightly and condenses to form chromosomes.

Detailed explanation-5: -In eukaryotic cells, genomic DNA is compactly stored in the nucleus by wrapping DNA around histone cores. The nuclear envelope (NE), composed of a double lipid bilayer and a structure called the nuclear lamina, encloses chromatin via the interaction between the nuclear lamina and chromatin.

There is 1 question to complete.