AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In human cells, DNA:
A
floats freely in the cytoplasm
B
is found in the nucleus
C
is wrapped within the ribosome
D
is circular
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Detailed explanation-3: -It’s in the middle of the cell, and the nucleus contains all of the cell’s chromosomes, which encode the genetic material.

Detailed explanation-4: -The nucleolus contains DNA, RNA and proteins. It is a ribosome factory.

Detailed explanation-5: -DNA stands for deoxyribonucleic acid. It is the genetic material that determines who we are both as individuals and human beings. DNA is found in the nucleus and in the mitochondria of the cell.

There is 1 question to complete.