Bio 181 ASU Exam 1 Questions And
Answers 100% Verified.
Primitive prokaryote cell evolved into_________ - correct answer. pro-eukaryotic
cell
Eukaryote - correct answer. single celled organism
Paramecium - correct answer. distant ancestor of our cells, limited by # of
biomolecular machines within itself
What does a paramecium use cilia for? - correct answer. to move
What was the precursor to our kidneys? - correct answer. contractile vacuole
SEM(Scanning Electron Microscopy) - correct answer. cannot view living cells
What can parameciums o as a defense technique against predators? - correct answer.
they can shed their cilia
Cells "walk" with ______ and ________ - correct answer. lamelipodium an
fillapodium
How do you distinguish the front and the back of the cell? - correct answer. the front
has lamelipodium and filapodium, the back has retraction fibers
Focus - correct answer. clump of cancer cells
Phase Contrast Microscopy - correct answer. can watch living cells move, light
microscopy
Retraction Fiber - correct answer. the first lamelipodia, stretches until it breaks and
then releases cytoplasm and is reabsorbed into the cell
, How can a cell stretch their parts so extensively? - correct answer. elasticity and the
plasma membrane
Normal cells are anchorage-_______________ - correct answer. dependent
Cancer cells are anchorage-________________ - correct answer. independent
Anchorage-dependent - correct answer. uses contact inhibition to stop growth
Anchorage-indepedent - correct answer. will keep growing forever given fresh
nutrients and space
Limitations of Cell Culture technique - correct answer. 1) not all cells will grow in a
culture
2) cells lose their histotype in vivoshape and 3d structure of tissue is changed
3)metabolism likely changes
Controlled Experiment - correct answer. scientists manipulate only one of the
variables/factors being tested
Comparative Experiment - correct answer. data is gathered from different sources
and is not manipulated and other variables are held constant
Cell size is limited by________ - correct answer. the diffusion of gas and
nutrients/waste
What does an extant version of a prokaryotic cell have? - correct answer.
cytoplasm, ribosomes, nucleoid, plasma membrane, cell wall and capsule
Endomembrane theory - correct answer. an infolded plasma membrane attached to
a chromosome in an ancestral prokaryote may have led to formation of plasma
membrane. endocytosis would have needed to occur
What was the advantage of losing the cell wall? - correct answer. allowed for
flexibility of the cell
What is the cytoskeleton composed of? - correct answer. actin microtubules
Do we know where the cytoskeleton came from? - correct answer. NO. genes
encoded not found in bacteria or archaea
The first true eukaryote likely possessed: - correct answer. 1) cytoskeleton
2)nuclear envelope
3) may have had an associated endoplasmic reticulum and golgi apparatus
4)one or more flagella possibly
Answers 100% Verified.
Primitive prokaryote cell evolved into_________ - correct answer. pro-eukaryotic
cell
Eukaryote - correct answer. single celled organism
Paramecium - correct answer. distant ancestor of our cells, limited by # of
biomolecular machines within itself
What does a paramecium use cilia for? - correct answer. to move
What was the precursor to our kidneys? - correct answer. contractile vacuole
SEM(Scanning Electron Microscopy) - correct answer. cannot view living cells
What can parameciums o as a defense technique against predators? - correct answer.
they can shed their cilia
Cells "walk" with ______ and ________ - correct answer. lamelipodium an
fillapodium
How do you distinguish the front and the back of the cell? - correct answer. the front
has lamelipodium and filapodium, the back has retraction fibers
Focus - correct answer. clump of cancer cells
Phase Contrast Microscopy - correct answer. can watch living cells move, light
microscopy
Retraction Fiber - correct answer. the first lamelipodia, stretches until it breaks and
then releases cytoplasm and is reabsorbed into the cell
, How can a cell stretch their parts so extensively? - correct answer. elasticity and the
plasma membrane
Normal cells are anchorage-_______________ - correct answer. dependent
Cancer cells are anchorage-________________ - correct answer. independent
Anchorage-dependent - correct answer. uses contact inhibition to stop growth
Anchorage-indepedent - correct answer. will keep growing forever given fresh
nutrients and space
Limitations of Cell Culture technique - correct answer. 1) not all cells will grow in a
culture
2) cells lose their histotype in vivoshape and 3d structure of tissue is changed
3)metabolism likely changes
Controlled Experiment - correct answer. scientists manipulate only one of the
variables/factors being tested
Comparative Experiment - correct answer. data is gathered from different sources
and is not manipulated and other variables are held constant
Cell size is limited by________ - correct answer. the diffusion of gas and
nutrients/waste
What does an extant version of a prokaryotic cell have? - correct answer.
cytoplasm, ribosomes, nucleoid, plasma membrane, cell wall and capsule
Endomembrane theory - correct answer. an infolded plasma membrane attached to
a chromosome in an ancestral prokaryote may have led to formation of plasma
membrane. endocytosis would have needed to occur
What was the advantage of losing the cell wall? - correct answer. allowed for
flexibility of the cell
What is the cytoskeleton composed of? - correct answer. actin microtubules
Do we know where the cytoskeleton came from? - correct answer. NO. genes
encoded not found in bacteria or archaea
The first true eukaryote likely possessed: - correct answer. 1) cytoskeleton
2)nuclear envelope
3) may have had an associated endoplasmic reticulum and golgi apparatus
4)one or more flagella possibly
