DNA, RNA, and Protein Synthesis

Which is the function of DNA helicase enzyme in DNA replication...?

• coils new DNA strands

• joins DNA to RNA primer

• matches nucleotide pairs

• unwinds the double helix

What is the complementary mRNA sequence to A-T-T-G-C-A

• T-A-A-C-G-T

• U-A-A-C-G-T

• U-A-A-C-G-U

• T-A-A-G-C-U

Why can the deletion of a single nitrogen base in DNA due to a mutation be harmful?

• deletion causes chromosomes to join wrong chromosome

• nearly every amino acid after the the deletion will change

• causes a gamete to have an extra chromosome

• one chromosome breaks off and becomes fragile

What supervises the production of proteins and travels from nucleus to cytoplasm (ribosomes)?

• DNA

• tRNA

• mRNA

• rRNA

In which part of the cell does the process shown take place?

• nucleus

• food vacuole

• ribosomes

• chromosome

What two main parts make up a chromosome?

• DNA AND PROTEIN

• RNA AND PHOSPHATE

• DNA AND RNA

• SUGAR AND PHOSPHATE

Why is the presence of DNA important for cellular metabolic activities?

• DNA DIRECTS THE PRODUCTION OF ENZYMES

• DNA IS A COMPONENT OF CELL MEMBRANE

• DNA INCREASES SOLUBILITY OF NUTRIENTS

• DNA IS A MAJOR COMPONENT OF THE CYTOPLASM

WHAT IS THE FUNCTION OF DNA POLYMERASE DURING REPLICATION?

• bonds mRNA to parent strand

• unwinds replicated DNA

• bonds new nucleotides to parent strand

• winds the replicated DNA

FIGURE III REPRESENTS?

• GENE

• AMINO ACID

• CODON

• DNA MOLECULE

WHICH IS THE CENTRAL DOGMA OF BIOLOGY?

• DNA CODES FOR RNA WHICH GUIDES ENZYME SYNTHESIS.

• RNA CODES FOR DNA WHICH GUIDES ENZYME SYNTHESIS

• DNA CODES FOR RNA WHICH GUIDES PROTEIN SYNTHESIS.

• RNA CODES FOR DNA WHICH GUIDES PROTEIN SYNTHESIS.