AP BIOLOGY

THE CELL

STRUCTURE AND FUNCTION OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This organelle stores and protects the DNA that contains information for the cell. It is covered by a double membrane.
A
Nucleolus
B
Mitochondria
C
Nucleus
D
Cytoskeleton
Explanation: 

Detailed explanation-1: -The nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell’s chromosomes and is the place where almost all DNA replication and RNA synthesis occurs. The nucleus is spheroid in shape and separated from the cytoplasm by a membrane called the nuclear envelope.

Detailed explanation-2: -Nucleus. Known as the cell’s “command center, ” the nucleus is a large organelle that stores the cell’s DNA (deoxyribonucleic acid). The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information.

Detailed explanation-3: -Mitochondria is a double membrane-bound cell organelle. It is present in all eukaryotic cells including the plant and the animal cell. It plays an important role in cellular respiration and also has its own DNA.

Detailed explanation-4: -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-5: -The double membrane-bound organelles are mitochondria, chloroplasts and the nucleus.

There is 1 question to complete.