Bio 181 ASU Exam 1 Questions & Answers
2024
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
2024
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
