Question 1

What type of RNA copies the genetic instructions from DNA in the nucleus and carries them to the cytoplasm?

Accepted Answer

Messenger RNA (mRNA)

Answer

Ribosomal RNA (rRNA)

Answer

Transfer RNA (tRNA)

Answer

DNA

Question 2

Which nitrogen base is found in RNA instead of thymine?

Accepted Answer

Uracil (U)

Answer

Guanine (G)

Answer

Adenine (A)

Answer

Cytosine (C)

Question 3

Which RNA type brings amino acids to ribosomes during protein synthesis?

Accepted Answer

Transfer RNA (tRNA)

Answer

Messenger RNA (mRNA)

Answer

Ribosomal RNA (rRNA)

Answer

DNA

Question 4

What is the sugar found in RNA?

Accepted Answer

Ribose

Answer

Glucose

Answer

Fructose

Answer

Deoxyribose

Question 5

What does mRNA do in the process of protein synthesis?

Accepted Answer

Copies the genetic instructions from DNA and carries them to the cytoplasm

Answer

Helps form ribosomes

Answer

Contains the genetic message

Answer

Brings amino acids to ribosomes

Question 6

What is the main difference between DNA and RNA?

Accepted Answer

RNA consists of one nucleotide chain instead of two

Answer

DNA contains ribose instead of deoxyribose

Answer

RNA is double-stranded

Answer

DNA contains uracil instead of thymine

Question 7

What are the two nitrogen bases that always bond together in DNA?

Accepted Answer

Adenine and thymine

Answer

Adenine and cytosine

Answer

Cytosine and thymine

Answer

Guanine and cytosine

Question 8

What enzyme breaks the bonds between complementary bases in DNA during replication?

Accepted Answer

DNA helicase

Answer

RNA polymerase

Answer

DNA polymerase

Answer

Ligase

Question 9

What type of bonds hold together the two polynucleotide chains of DNA in the double helix?

Accepted Answer

Hydrogen bonds

Answer

Peptide bonds

Answer

Covalent bonds

Answer

Ionic bonds

Question 10

What is the structure of a DNA nucleotide?

Accepted Answer

Sugar (deoxyribose), phosphate group, nitrogen-containing base

Answer

Glucose, ribose, nitrogen base

Answer

Glycerol, fatty acid, nitrogen base

Answer

Amino acid, sugar, phosphate group

Question 11

Which process results in two daughter DNA molecules that are identical to the parent molecule?

Accepted Answer

DNA replication

Answer

Translation

Answer

Mutation

Answer

Transcription

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