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BIO 280 Exam 2 – Questions & Answers | Biology Study Guide

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BIO 280 Exam 2 – Questions & Answers | Biology Study Guide

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Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@




Bio 280 Exam 2 Questions
and Answers


How many chromosomes are found in prokaryotes?


Answer> one




What is another place that can have DNA in prokaryotes?


Answer> plasmid




Bacteria generally have a?


Answer> single large chromosome




Super Coiled DNA is


Answer> DNA packed and coiled which is held together by proteins. It is not

bounded by a membrane.




Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@

,Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@




Plasmids


Answer> -Extrachromosomal circular DNA


-Contain genes which are not necessary for the organism's survival but which

may be useful to it (e.g antibiotic resistance genes, genes for enzymes which

degrade pollutants for consumption by the cell, etc.).


-Can be transferred 'horizontally' (from mature cell to mature cell)


- Used as vectors for transferring DNA in genetic engineering




Ribosomes


Answer> - Used for constructing proteins from messenger RNA (mRNA) (more

on this later)


- In two parts and made up of proteins and ribosomal RNA (rRNA)




Poly beta-hydroxybutyrate (PHB) granules


Answer> a chemical some bacteria produce to store carbon and energy, much

like we do with fats. Its significance to humans is that it is essentially

biodegradable plastic.




Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@

,Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@




Storage bodies and inclusions are?


Answer> PHB, glycogen, sulfur, magnetosomes




Endospores


Answer> -Formed for survival, not reproduction


- Toughest, most resistant life form of all, partially due to the presence of

dipicolinic acid in the spore coat.Can come back to life, only way to kill them is

autoclaving.


- Formed within cell (endo = inside) unlike fungal spores


- Two major genera have them: Bacillus and Clostridium.


- Have been found as far back as 40 million years ago.




Raul Cano


Answer> extracted endospores out of wasp and it grew




Clostridium tetani and C. perfringens is




Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@

,Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@




Answer> obligated anaerobic




C. Botulinum is


Answer> found in canned food, causal agent of botulism




Bacillus anthracis


Answer> causal agent of anthrax




Clostridium tetani


Answer> causal agent of tetanus




C. perfringens


Answer> causal agent of gas gangrene




Bacterial Motility


Answer> bacteria have either polar or peritrichous flagella, they run and tumble




Bio 280
Bio exam
280
Bio exam
280
2 questions
exam
2 questions
2 questions
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@
and answers.pdf!!!!!!!!!!!!!!!!!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@@@@@@@@@@@@@@@@@@@@@@@@

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