BSC 108 University of Alabama Test 3 Review Exam Questions & Answers.
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Course
BSC 108
Institution
BSC 108
BSC 108 University of Alabama Test 3 Review Exam Questions & Answers.BSC 108 University of Alabama Test 3 Review Exam Questions & Answers.BSC 108 University of Alabama Test 3 Review Exam Questions & Answers.
BSC 108 University of Alabama Test 3 Review Exam
Questions & Answers.
What are the differences between RNA and DNA? - ANS DNA is double-stranded,
forming a double helix, while RNA is usually single-stranded
What are the four nucleotide bases for DNA and RNA? - ANS DNA contains thymine
(T), cytosine (C), adenine (A), and guanine (G). RNA- Uracil instead of thymine
How do the bases pair in a DNA strand? RNA strand? - ANS DNA (A-T), (C-G), RNA
(A-U)
What is a mutation? What can cause a mutation? - ANS Is any change in the nucleotide
sequence of DNA. Errors in DNA replication. Physical or chemical agents called
mutagens.
Know where the sugar, phosphates, and nucleotides are located on the double helix -
ANS They consist of chemical units called nucleotides. The nucleotides are joined by a
sugar-phosphate backbone.
How can a mutation be good, bad or cause no obvious difference? - ANS Mutations are
the basis of cancer, many genetic diseases and evolution.
Who won the Nobel Prize for the structure of DNA? - ANS James Watson and Francis
Crick
Who is Rosalind Franklin? - ANS Discovered the Double Helix
What is DNA Replication? - ANS When a cell or whole organism reproduces, a
complete set of genetic instructions must pass from one generation to the next
What is Transcription? - ANS DNA to RNA
What is Translation - ANS RNA to Protein
Where does DNA Replication, Transcription and Translation take place in the cell? -
ANS Transcription occurs in the nucleus. Translation occurs in the cytoplasm. Specific
sites for DNA replication along double helix.
. How can a mutation in DNA result in a protein not functioning correctly? - ANS By
changing a gene's instructions for making a protein, a variant can cause a protein to
malfunction or to not be produced at all.
What is a mutagen? Know some examples of mutagens. - ANS a chemical or physical
agent capable of inducing changes in DNA called mutations. Cancer
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