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MCB3020 Final Exam Questions and Answers 100% Verified
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MCB3020 Final Exam Questions and Answers 100% VerifiedMCB3020 Final Exam Questions and Answers 100% VerifiedMCB3020 Final Exam Questions and Answers 100% Verified Unlike members of the Bacteria, most archaeans have linear chromosomes. - ANSWER - False The cell membrane is a rigid structure that...

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  • August 13, 2024
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  • 2024/2025
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  • mcb3020 final exam questions and answers 100 veri
  • mcb3020 final exam questions and answers
  • unlike members of the bacteria most archaeans hav
  • the cell membrane is a rigid structure that provid

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MCB3020 Final Exam Questions and
Answers 100% Verified
Unlike members of the Bacteria, most archaeans have linear chromosomes. - ANSWER - False


The cell membrane is a rigid structure that provides bacteria with their characteristic shapes. -
ANSWER - False


The major site of cell membrane synthesis is the - ANSWER - endoplasmic reticulm


The Golgi apparatus is responsible for the - ANSWER - packaging of materials for excretion


Chemotaxis is a process by which bacteria - ANSWER - move toward an attractant or away
from a repellent


The plasma membrane of eukaryotes contains all of the following EXCEPT - ANSWER -
peptidoglycan


External structures that are found in Archaea but not Bacteria are _________. - ANSWER -
hami


Which acellular agent is composed of RNA only? - ANSWER - viroids
The concept that living organisms arise from nonliving material is called - ANSWER -
spontaneous generation


Extrachromosomal DNA in Bacteria and Archaea are commonly found in the form of - ANSWER
- plasmids


Which of the following structures are external to both Bacterial and Archaeal cells? - ANSWER -
pili

, Which cytoplasmic structures in bacteria provide regulate buoyancy of the cell? - ANSWER -
gas vacuoles


Which of the following describes an organism that lacks linear chromosomes and peptidoglycan
cell walls? - ANSWER - Archaea


Which is the most common cell wall in most Archaea? - ANSWER - S layer


Membrane delimited intracellular structures that perform specific functions in cells are called -
ANSWER - organelles


Which of the following microscopes typically uses dyes or antibodies? - ANSWER -
Fluorescence Microscopes


Which external structure appears like a grappling hook used for adhesion? - ANSWER - hami


Antiseptic surgery was pioneered by - ANSWER - Lister


The first direct evidence of primitive cellular life was the 1977 discovery of _________ fossils in
the Swartkoppie chert, a type of granular sedimentary rock rich in silica. - ANSWER - microbial


The term used to describe bacteria that are intermediate in shape between spherical and rod-
shaped is - ANSWER - coccobacilli


All of the following statements about the periplasmic space are true except: - ANSWER - It is
only found in gram-positive bacteria


The cell wall of bacteria are typically composed of ______. - ANSWER - cellulose, pectin,
peptidoglycan


Enzymes needed to digest all types of macromolecules are found in - ANSWER - lysosomes


An external structure unique to archaea are the ______. - ANSWER - cannulae

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