Molecular Biology Basics

Question 1

True or false: DNA is double-stranded

Accepted Answer

True

Question 2

Epigenetics is regulation of gene expression ________ altered DNA sequence

Accepted Answer

Not caused by

Question 3

What is the role of DNA ligase in replication?

Accepted Answer

Seals Okazaki fragments

Question 4

Which of the following are non-coding RNAs?

Accepted Answer

rRNA, miRNA, LncRNA

Question 5

What is the main function of topoisomerases?

Accepted Answer

Relieving torsional strain during DNA replication

Question 6

Which of the following is not an epigenetic mechanism?

Accepted Answer

RNA splicing

Question 7

DNA and RNA use the same four letter code

Accepted Answer

False

Question 8

Which RNA type carries amino acids to the ribosome?

Accepted Answer

tRNA

Question 9

DNA polymerase can initiate a new strand on its own.

Accepted Answer

False

Question 10

The spliceosome contains both RNA and protein components.

Accepted Answer

True

Question 11

Which enzyme unzips the DNA double helix during replication?

Accepted Answer

Helicase

Question 12

The genetic code is degenerate, meaning that multiple codons can code for the same amino acid.

Accepted Answer

True

Question 13

What is DNA's primary function?

Accepted Answer

Store genetic info

Question 14

What is a promotor?

Accepted Answer

A regulatory feature for genes

Question 15

What enzyme synthesizes RNA during transcription?

Accepted Answer

RNA polymerase

Questions 15