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Exam- BIOS 1108 Module 1 Test 1Learning Catalytics Content (100% Solved)
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Exam- BIOS 1108 Module 1 Test 1Learning Catalytics Content (100% Solved)
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Exam- BIOS 1108 Module 1 Test 1Learning CatalyticsContent (100% Solved)
the term prokaryote is: a) monophyletic b) paraphyletic CORRECT ANS-b) paraphyletic
the terms Archaea and Eukaryota are: a) monophyletic b) paraphyletic CORRECT ANS-a)
monophyletic
archaea and bacteria share the following traits in common:
A plasma membranes containing organelles
B cell type is prokaryotic (lacks a nucleus)
C cell morphology is variable
D cell membrane is organized as a lipid bilayer
E cell wall contains peptidoglycans
F unicellularity CORRECT ANS-B, C, F
Prokaryotes are much smaller than unicellular eukaryotes, and lack specialized cell organelles.
As a result of their simpler structure, prokaryotes are more sensitive (or less tolerant) of
stressful environmental conditions, including high temperature, acidic or alkaline conditions,
and high salt content, than eukaryotic cells.
, Exam- BIOS 1108 Module 1 Test 1Learning Catalytics
Content (100% Solved)
true/false CORRECT ANS-false
A prokaryote that derives its energy from chemical oxidation and obtains carbon from
biological sources is best classified as what kind of organism?
A photoautotroph
B photoheterotroph
C chemoautotroph
D chemoheterotroph CORRECT ANS-D chemoheterotroph
Phylogenetic trees of the three domains of life show Eukarya are more closely related to
Archaea than to Bacteria. Bacteria have a carbohydrate called peptidoglycan present in their
cell walls which is absent from all Archaea and Eukarya. What is the simplest explanation for
this pattern? CORRECT ANS-Peptidoglycan in cell walls evolved after the split between the
ancestors to modern bacteria and ancestors to Archaea and Eukarya
Organisms that are able to synthesize organic compounds from inorganic precursors are called
_________.
chemoautotrophs
, Exam- BIOS 1108 Module 1 Test 1Learning Catalytics
Content (100% Solved)
photoautotrophs
heterotrophs
autotrophs
photoheterotrophs
chemoheterotrophs
phototrophs
chemotrophs CORRECT ANS-autotrophs
Organisms which can capture energy from the sun to synthesize organic molecules, but
require carbon already in an organic form, are called______________.
heterotrophs
autotrophs
chemoautotrophs
photoautotrophs
chemotrophs
phototrophs
photoheterotrophs
, Exam- BIOS 1108 Module 1 Test 1Learning Catalytics
Content (100% Solved)
chemoheterotrophs CORRECT ANS-photoheterotrophs
The genetic information of a prokaryote is organized into a circular, single strand of DNA.
True
False CORRECT ANS-false (if it is one piece, it is circular generally but double-stranded)
Nothing happens on this planet without significant involvement of prokaryotes, they are
indeed the most important group of living organisms as without them large, complex
organisms could not survive.
True
False CORRECT ANS-true
Bacteria are sources of many serious diseases in humans (e.g. bubonic plague, Lyme disease,
C. diff infections). The development of a "universal antibiotic" that would eliminate all
bacteria from the body would be greatly beneficial to promoting human health.
True
False CORRECT ANS-false
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