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MICROBIOLOGY EXAM 5- METZLER
Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -59 Questions and Answers
-Format: Multiple-choice / Flashcard
Question 1: is to promote transcription
Answer:
promoter Question 2: Uptake of naked DNA: floating around DNA.Useful in the lab.Cells called competent.
Answer:
transformation
Question 3: Making a copy
Answer:
Transcribe Question 4: Give the bacterium the ability to cause more damage when they infect us (ex: strep throat and scarlet fever)
Answer:
Virulence
Question 5: Bacterial DNA is transferred by a bacteriophage.
The virus does not mean to do this, it just accidentally happens.When they affect a bacteria they insert their DNA Sometimes the DNA is mixed up.
Answer:
Transduction Question 6: A test to determine the mutagenic activity of chemicals by observing whether they cause mutations in sample bacteria
Answer:
Ames test
Question 7: ribosomal RNA- proteins that make ribosomes
Answer:
rRNA Question 8: Adding bases to the new DNA chain; proofreading the chain for mistakes
Answer:
DNA polymerase 3
Question 9: in certain cases, the letter in the 3rd position doesn't matter
Answer:
Wobble
Question 10: happen to their one; DNA polymerase made a mistake
Answer:
spontaneous Question 11: Complimentary to the codon that is in the mRNA, in translation, they will have to match up
Answer:
Anticodons
Question 12: A to U and G to C
Answer:
RNA Question 13: DNA polymerase binds to other template strand and synthesizing discontinues segments (Okazaki fragments) of nucleotides on 3' OH- generating lagging strand
Answer:
Step 3 in DNA replication
Question 14: At the 3' end, there is a _____ group
Answer:
Hydroxyl
Question 15: 1. Separate strands
- Copy template
- Produce new DNA strands
- Involves many enzymes
- Bidirectional
- Asymmetrical
Answer:
Replication Question 16: A type of conjugation that involves fertility plasmid. Does not transfer any chromosomal info.
Answer:
F factor
Question 17: How many feet long if you held a DNA structure up?
Answer:
6
Question 18: same as bacteria but slightly different
Answer:
Almost Universal
Question 19: when the process ends
Answer:
termination
Question 20: Core belief system in molecular biology
Answer:
Central Dogma
Question 21: Made of rRNA and proteins
Actually builds the protein Contains ribozymes Made of two subunits
- sites: A (tRNA), P (growing protein is held here), E (exit site, where empty RNA are)
Answer:
Ribosomes Question 22: DNA polymerase binds to one strand of DNA and begins using it as a template for assembling/ synthesizing a leading strand of nucleotides on 3' OH
Answer:
Step 2 in DNA replication
Question 23: A way to share genetic information.
Bacteria do not use sexual recombination.Provides genes for AB resistance, nutritional and metabolic abilities, increased virulence and adaptability.
Answer:
genetic recombination
Question 24: transfer RNA
Answer:
tRNA
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