MLT 106 Unit 2 Questions with All Correct Answers
What are the DNA repair systems? - Answer-Photoreactivation, excision repair, recombinational repair, mismatch repair, SOS repair
When can thymine bases be altered and what does it develop? - Answer-After exposure to UV radiation to develop t...
MLT 106 Unit 2 Questions with All
Correct Answers
What are the DNA repair systems? - Answer-Photoreactivation, excision repair,
recombinational repair, mismatch repair, SOS repair
When can thymine bases be altered and what does it develop? - Answer-After exposure
to UV radiation to develop thymine dimers
Photoreactivation repair - Answer-Involves a photoreactivation enzyme (PRE) that
cleaves the bonds between thymine dimers
Supplies correct strand of DNA when an error is deleted - Answer-Recombinational
repair
When are incorrect nucleotides removed and what are they replaced with? - Answer-
Removed during proofreading
Replaced with mismatch pair enzymes
When is SOS repair induced? - Answer-When DNA or cell damage occurs
polymerase chain reaction (PCR) - Answer-A technique for amplifying DNA in vitro by
incubating with special primers, DNA polymerase molecules, and nucleotides.
What is the "go between" or "link" of DNA? - Answer-RNA
What dos RNA store? - Answer-Genetic information and protein
What is the final product of the expression of genetic information? - Answer-Proteins
What replaces thymine in RNA? - Answer-Uracil (prymidine); pairs with Adenine
What substitutes deoxyribose in RNA? - Answer-Sugar ribose
What is at the carbon position in RNA vs DNA? - Answer-Hydroxyl group=RNA
Hydrogen=DNA
mRNA (messenger RNA) - Answer--RNA transcribed from DNA
-Encodes specific genes (determining various blood groups)
-Post synthesis processing before transferring out of the nucleus and translated
-RNA polymerase II transcribes mRNA
tRNA (transfer RNA) - Answer--Brings amino acids to ribosomes mRNA
-Charged with only one species of amino acid
-Hydrogen bonding to acquire formal structure
-Bonding stabilizes
Small RNA molecules (sRNA) - Answer--Silenced RNA molecules
-Altered in amount and type during cellular growth and differentiation
Protein synthesis - Answer-Creation of polypeptide chains based on the genetic info
encoded in the DNA molecule
What are the two processes of protein synthesis? - Answer-1. Transcription
2. Translation
DNA is copied into RNA by ____ and then _____ into protein - Answer-Transcription
Translated
Transcription - Answer--Cellular process which DNA is copied into RNA producing a
complementary RNA strand
-The transfer of genetic info from DNA into mRNA
-Begins when RNA Polymerase II binds to the region upstream (left of the 5' start site)
of a gene
What are the two regions in the transcription process? - Answer--Promoter region
-Enhancer region
Parental Pure - Answer-The first generation of a study
Consisted of all red or all white flowers
Either homozygous for red flowers or for white flowers
What is science concerned with regarding genetics? - Answer-The chemical and
physical nature of genes and the mechanism by which genes control development of an
organism
Genetics is the _____ of information among many different levels - Answer-Transfer
What is the foundation level of a molecule and backbone of heredity called? - Answer-
DNA
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Scholarsstudyguide. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R233,90. You're not tied to anything after your purchase.
