Question 1

Which of the following is not a component of DNA structure?

Accepted Answer

Chlorine

Answer

Thymine

Answer

Adenine

Answer

Cytosine

Question 2

What is the primary function of chromatin in the cell?

Accepted Answer

Regulate gene expression

Answer

Synthesize proteins

Answer

Produce ATP

Answer

Maintain cell structure

Question 3

Which nitrogenous base is complementary to adenine in DNA?

Accepted Answer

Thymine

Answer

Guanine

Answer

Uracil

Answer

Cytosine

Question 4

What is the structure of DNA referred to as?

Accepted Answer

Double helix

Answer

Single strand

Answer

Triple helix

Answer

Zigzag structure

Question 5

Which chromosomal structure holds the sister chromatids together during cell division?

Accepted Answer

Centromere

Answer

Telomere

Answer

Nucleosome

Answer

Histone

Question 6

Which of the following is a correct pairing of nitrogenous bases in DNA?

Accepted Answer

Guanine-Cytosine

Answer

Adenine-Thymine

Answer

Cytosine-Adenine

Answer

Thymine-Uracil

Question 7

What is the building block of DNA?

Accepted Answer

Nucleotide

Answer

Protein

Answer

Carbohydrate

Answer

Lipid

Question 8

What is the function of DNA in living organisms?

Accepted Answer

Storing genetic information

Answer

Facilitating cellular respiration

Answer

Regulating cell functions

Answer

Producing proteins

Question 9

What is the function of chromatin in the cell nucleus?

Accepted Answer

Packaging and organizing DNA

Answer

Producing proteins

Answer

Generating energy for the cell

Answer

Transporting genetic information

Question 10

Which of the following is true about chromatin?

Accepted Answer

It is a complex of DNA and proteins

Answer

It is a type of RNA molecule

Answer

It is a single-stranded form of DNA

Answer

It is a cellular organelle

Question 11

Which of the following is NOT a nitrogenous base found in DNA?

Accepted Answer

Uracil

Answer

Thymine

Answer

Guanine

Answer

Adenine

Question 12

What is the sugar component in DNA?

Accepted Answer

Deoxyribose

Answer

Glucose

Answer

Ribose

Answer

Fructose

Question 13

Which of the following is a characteristic of meiosis?

Accepted Answer

Four haploid daughter cells are produced

Answer

No daughter cells are produced

Answer

One haploid daughter cell is produced

Answer

Two diploid daughter cells are produced

Question 14

Which of the following is a key difference between mitosis and meiosis?

Accepted Answer

Meiosis involves two rounds of cell division

Answer

Mitosis results in the formation of four daughter cells

Answer

Meiosis results in the formation of diploid cells

Answer

Meiosis results in the formation of two identical daughter cells

Answer

Mitosis involves the exchange of genetic material

Question 15

Which of the following is a characteristic of cytokinesis?

Accepted Answer

Division of the cytoplasm

Answer

Separation of sister chromatids

Answer

Division of the nucleus

Answer

Formation of spindle fibers

Answer

Alignment of chromosomes

Question 16

Which phase of the cell cycle involves the division of the nucleus?

Accepted Answer

Mitosis

Answer

Metaphase

Answer

Prophase

Answer

Interphase

Question 17

Which phase of the cell cycle is responsible for DNA replication?

Accepted Answer

S phase

Answer

G1 phase

Answer

G2 phase

Answer

M phase

Question 18

Which phase of mitosis does the spindle apparatus form?

Accepted Answer

Prophase

Answer

Metaphase

Answer

Anaphase

Answer

Telophase

Question 19

What is the purpose of the G1 phase in the cell cycle?

Accepted Answer

Cell growth and metabolism

Answer

Cell division

Answer

Chromosome alignment

Answer

DNA replication

Question 20

What is the purpose of the G2 phase in the cell cycle?

Accepted Answer

Preparation for cell division

Answer

DNA replication

Answer

Chromosome alignment

Answer

Protein synthesis

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