Table of Contents
- 1 Which of the following organelles always contain DNA?
- 2 Which type of cell contains DNA?
- 3 Do ribosomes contain DNA?
- 4 What type of DNA is found in humans?
- 5 Is DNA a cell organelle?
- 6 Does mitochondria have its own DNA?
- 7 How much DNA is present in a cell?
- 8 What is the difference between DNA and RNA?
- 9 What organelle protects DNA?
- 10 Which structures contain DNA within the cell?
Which of the following organelles always contain DNA?
Answer: Mitochondria always contains DNA. Explanation: Mitochondria is called the Powerhouse of the cell.
Which type of cell contains DNA?
cell nucleus
In eukaryotic cells, most DNA is located in the cell nucleus (though some DNA is also contained in other organelles, such as in the mitochondria and the chloroplast in plants). Nuclear DNA is organized into linear molecules called chromosomes.
Do all organelles contain DNA?
Eucariotic cells contain several organelles. The nucleus contains most of the DNA in a cell and this DNA is called the chromosomal DNA….1. Which organelles contain DNA?
| Type of DNA | Organism | size in base pairs |
|---|---|---|
| chloroplast DNA | green alga | 180 x 103 |
Do ribosomes contain DNA?
Ribosomes do not contain DNA. Ribosomes are composed of 2 main sub-units – the large subunit joins together the mRNA and the tRNA forming polypeptide chains whereas the smaller RNA subunits reads RNA. Hence, ribosomes do not have DNA. DNA is seen in the nucleus, chloroplasts of a cell and mitochondria.
What type of DNA is found in humans?
What type of DNA is found in humans? B-DNA is found in humans. It is a right-handed double-helical structure.
What are the 3 functions of DNA?
DNA now has three distinct functions—genetics, immunological, and structural—that are widely disparate and variously dependent on the sugar phosphate backbone and the bases.
Is DNA a cell organelle?
The three organelles that contain DNA are the nucleus, mitochondria and chloroplasts. Organelles are membrane-bound subunits within a cell — analogous to organs in the body — that perform specific functions. The nucleus is the control center of the cell, and houses genetic information.
Does mitochondria have its own DNA?
Although most DNA is packaged in chromosomes within the nucleus, mitochondria also have a small amount of their own DNA. This genetic material is known as mitochondrial DNA or mtDNA.
Is RNA found in ribosomes?
Ribosomal RNA (rRNA) rRNAs are found in the ribosomes and account for 80% of the total RNA present in the cell. Ribosomes are composed of a large subunit called the 50S and a small subunit called the 30S, each of which is made up of its own specific rRNA molecules.
How much DNA is present in a cell?
Human genome consists of 3.16 billion base pairs present on 23 pairs of chromosomes in each cell. Only 2 percent of genome codes for proteins. Around 30,000 genes are present in human DNA.
What is the difference between DNA and RNA?
There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
Which organelle stores all the genetic information of the cell?
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. Within the nucleus is a smaller structure called the nucleolus,…
What organelle protects DNA?
The cell nucleus is a large organelle in eukaryotic organisms which protects the majority of the DNA within each cell. The nucleus also produces the necessary precursors for protein synthesis.
Which structures contain DNA within the cell?
Humans and many other organisms have eukaryotic cells. This means that their cells have a membrane-bound nucleus and several other membrane-bound structures called organelles. In a eukaryotic cell, DNA is within the nucleus . A small amount of DNA is also found in organelles called mitochondria, which are the powerhouses of the cell.
What part of the cell contains DNA Besides the nucleus?
Yes, A cell can contain DNA in an area other than the nucleus and the mitochondria. The places can be different for different types of cells. For Eukaryotic cell, DNA can be present in the chloroplast of the plant cells.