DNA structure, replication, transcription

In dogs, where does DNA replication take place?

• Ribosome

• Nucleus

• Bone marrow

• Cytoplasm

The monomer of DNA that consists of a phosphate, sugar and nitrogenous base is called a:

• nucleotide

• anti-codon

• codon

• polymer

If RNA from a human was compared with RNA from a lizard, they would both have

• deoxyribose sugar and thymine base

• Ribose sugar and thymine base

• Deoxyribose sugar and uracil base

• Ribose sugar and uracil base

Which of the following is NOT a difference between DNA and RNA

• The four nitrogen bases

• The sugar found in the backbone

• The number of strands

• The type of phosphate

Nitrogen bases are held together by

• Weak covalent bonds

• Strong covalent bonds

• Weak hydrogen bonds

• Strong hydrogen bonds

This enzyme breaks weak hydrogen bonds to separate strands of DNA before replication begins.

• Helicase

• Primase

• DNA Polymerase

• Ligase

If a portion of DNA contains the sequence A-T-C, then the corresponding codon on mRNA is

• A-T-C

• U-U-U

• T-A-G

• U-A-G

During _____________, the cell uses information from DNA to form messenger RNA codons which will code for proteins.

• Replication

• Transcription

• Translation

• Regurgitation

The sequence of ______ in a DNA molecule determines the protein that will made.

• Bonds

• Enzymes

• Nucleotides

• Deoxyribose sugars

How many amino acids are coded for by the strand of mRNA shown here?

A U G U A C

• One

• Two

• Three

• Six