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Biology 117 Pretest 2 with 100- correct answers(verified for accuracy).
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Biology 117 Pretest 2 with 100- correct answers(verified for accuracy).
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Biology 117 Pretest 2 with100% correct
answers(verified for
accuracy)
Which of the following traits do archaea and bacteria share? -
answer lack of a nuclear envelope and presence of a plasma
membrane
Prokaryotes are classified as belonging to two different domains.
What are the domains? - answer bacteria and archaea
What organisms are most numerous on Earth? - answer
prokaryotes
Why are Archaea considered a monophyletic group according to the
three-domain hypothesis? - answer because this group involves an
ancestral population and all of it's descendants
Imagine that you are given some chemoorganotrophic bacteria to
grow. What should you use as a source of energy for this type of
bacteria? - answer sugar
Cyanobacteria are thought to be the first organisms to evolve ____. -
answer oxygenic photosynthesis
When pathogenic fungi are found growing on the roots of grape
vines, grape farmers sometimes respond by covering the ground
around their vines with plastic sheeting and pumping a gaseous
fungicide into the soil. The most important concern of grape farmers
, who engage in this practice should be that the _____. - answer fungi
might also kill the mycorrhizae
Lignin and cellulose provide rigidity to the cell walls of plants. But in
most fungi, chitin performs this role. Why is it logical that most
fungi don't have lignin or cellulose in their cell walls? - answer
Fungi produce enzymes that degrade cellulose and lignin.
In most fungi, karyogamy does NOT immediately follow
plasmogamy, which consequently ________. - answer results in
heterokaryotic or potentially even dikaryotic cells
Which of the following best describes the physical relationship of
the partners involved in lichens? - answer Photosynthetic cells are
surrounded by fungal hyphae.
Which of the following is major characteristic of fungi that
distinguishes them from other eukaryotes? - answer Nutrient
acquisition via external digestion
The main trait that animals have in common with plants and fungi is
that they are all multicellular eukaryotes. Which of these traits
distinguishes animals from plants and fungi? - answer Animals
usually ingest their food first, before they digest it.
You find a new species of worm and want to classify it. Which of the
following lines of evidence would allow you to classify the worm as a
nematode and not an annelid? - answer It sheds its external cuticle
to grow.
What synapomorphy (shared, derived trait) distinguishes animals as
a monophyletic group, distinct from choanoflagellates? - answer
multicellularity
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