Structure Of Dna

Question 1

What does DNA stand for?

Answer 1

Deoxyribonucleic Acid

DNA is the molecule that carries genetic information in living organisms.

Question 2

What is the structure of DNA?

Answer 2

Double-stranded

DNA consists of two long strands that form a double helix.

Question 3

What are the components of a nucleotide?

Answer 3

• A deoxyribose sugar
• A base
• A phosphate

Nucleotides are the building blocks of DNA.

Question 4

Name the four bases found in DNA.

Answer 4

• Cytosine
• Thymine
• Adenine
• Guanine

These bases pair specifically to form the rungs of the DNA ladder.

Question 5

Which base pairs with Cytosine?

Answer 5

Guanine

In DNA, C pairs with G through hydrogen bonds.

Question 6

Which base pairs with Adenine?

Answer 6

Thymine

In DNA, A pairs with T through hydrogen bonds.

Question 7

What type of bonds hold the complementary base pairs together?

Answer 7

Hydrogen bonds

These bonds are crucial for the stability of the DNA structure.

Question 8

Fill in the blank: The sugar in DNA is _______.

Answer 8

deoxyribose

Deoxyribose is a five-carbon sugar essential for the structure of DNA.

Question 9

What are the ends of a DNA strand called?

Answer 9

5’end and 3’end

These designations refer to the carbon numbers in the sugar backbone.

Question 10

What is the organization of DNA in prokaryotes?

Answer 10

Prokaryotes have a nucleoid region where DNA is organized as a single circular chromosome.

Question 11

What is the organization of DNA in eukaryotes?

Answer 11

Eukaryotes have linear chromosomes found in the nucleus, tightly coiled and packed with associated proteins.

Question 12

What are examples of prokaryotes?

Answer 12

Bacteria are examples of prokaryotes.

Question 13

What are examples of eukaryotes?

Answer 13

Animals, plants, and fungi are examples of eukaryotes.