AP BIOLOGY

THE CELL

STRUCTURE AND FUNCTION OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a eukaryotic cell, where is the DNA?
A
in the nucleus
B
floating freely in the cytoplasm
C
in the chloroplasts
D
in the ribosomes
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 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-3: -Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.

There is 1 question to complete.