introduction and recap cellular control

What type of bond holds the DNA strands together?

• hydrogen

• ionic

• nonpolar covalent

• polar covalent

How are the DNA strands arranged?

• parallel

• anti-parallel

• perpendicular

• irregularly

What molecules make up the backbone of DNA?

• nucleotides and phosphates

• nucleotides and sugars

• sugars and nucleotides

• sugars and phosphates

Which of the following are needed for translation?

• mRNA

• tRNA

• rRNA

• codons and anticodons

Which of the following is true of RNA?

• contains ribose

• contains thymine

• is double stranded

• only found in the nucleus

DNA is copied during a process called ______________ which results in an identical copy of itself.

• Photosynthesis
• Transcription
• Replication
• Translation

Which type(s) of RNA is(are) involved in protein synthesis?

• transfer RNA
• messenger RNA
• tRNA and mRNA
• tRNA, mRNA, and rRNA

Genes contain instructions for assembling _______________.

• Nucleosomes
• Proteins
• Purines
• Pyrimidines

Which of the following are found in both DNA and RNA?

• ribose, phosphate groups, and adenine
• phosphate groups, guanine, and cytosine
• phosphate groups, guanine, and thymine
• deoxyribose, phosphate groups, and guanine

Which illustration of a chromosomal change best represents a chromosome mutation known as a deletion?

• ABCDEFG —> ABCDEF
• ABCDEFG —> ABEDCFG
• ABCDEFG —> ABCDEFGH
• ABCDEFG —> ABCDEFGKMN