HS Bio Units 3-4 Review

Multiple Choice

Which best describes the structure of DNA?

• backbone of bases with sugars on outside

• sugar-phosphate backbone with bases inside

• backbone of bases with sugars on inside

Multiple Choice

What is the of DNA polymerase in DNA replication?

• breaks apart bases

• ties chunks of DNA together

• creates replication fork

• adds nucleotides to growing chain

Multiple Choice

What is the purpose of transcription?

• make DNA

• make RNA

• make protein

• make sugar

Multiple Choice

Which best describes how mRNA is made?

• breaking apart DNA and reusing the pieces

• using DNA as a template

• duplicating RNA from nucleus

Multiple Choice

What is produced by translation?

• chain of nucleotides

• chain of amino acids

• DNA strand

• RNA strand

Multiple Choice

Which amino acid does the mRNA GCU code for?

• Ala

• Pro

• Cys

• Leu

Multiple Choice

How does a mutation in a sex cell affect an organism?

• it will kill it

• only affects offspring

• prevents limb formation

• prevents protein production

Multiple Choice

2 extra guanine (G) bases are added to DNA. What type of mutation is this?

• frameshift

• point

• silent

• chromosomal

Multiple Choice

What is true of adaptations?

• taught by parents

• learned during lifetime

• born with them

• lost during lifetime

Multiple Choice

What best describes the theory of evolution?

• theory supported by evidence

• educated guess

• hypothesis with no evidence