NWHSU Histology 1 - Exam 1 Questions Verified Answers Current Update (A+ Pass)
What is the term for a storage of charge across a membrane - Answers - capacitance
what is the difference of charge on the inside of a membrane - Answers - -70mv
what are 5 characteristics of a bilipid layer - A...
NWHSU Histology 1 - Exam 1
Questions Verified Answers
Current Update (A+ Pass)
What is the term for a storage of charge across a membrane - Answers -✔✔
capacitance
what is the difference of charge on the inside of a membrane - Answers -✔✔ -70mv
what are 5 characteristics of a bilipid layer - Answers -✔✔ 1. thin membrane
2. semipereability
3. allows protein to float around (fluid mosaic)
4. membrane proteins control what comes in, and goes out of the cell
5. gycocalyx
what is the function of the glycocalyx - Answers -✔✔ adhesion and communication
give 2 examples of organelles with double unit membranes - Answers -✔✔ nucleus,
mitochondria
give 3 examples of organelles with a single unit membrane - Answers -✔✔ rER, sER,
and lysosomes
what is caused by a decrease in myelenation of axons - Answers -✔✔ Multiple
sclerosis
why does the cell membrane need to be thin - Answers -✔✔ to let necessary chemicals
in/out of the cell
what is the purpose of cell wall thickening - Answers -✔✔ protection
Compare and contrast: Mitochondrion vs. nucleus - Answers -✔✔ 1. both have double
unit membrane
2.Mitochondria makes ATP, Nucleus is the control center of the cell
compare and contrast: centrioles vs. microtubules - Answers -✔✔ 1.centrioles are
organelles and microtubules are modification of the membrane
2. both are involved in forming mitotic spindles
3.both are non-membrane bound
4. centrioles -> basal bodies to anchor microtubules
, compare and contrast : microvilli vs cilia - Answers -✔✔ 1. both are extensions of the
membrane
2.cilia are long and microvilli are short
3.cilia are movement, microvilli are absorption
4. cilia have 9 doublets and 2 singlets
compare and contrast: microtubules vs microfilaments - Answers -✔✔ 1.both are non-
membrane bound
2.microtubules are hollow, microfilaments are solid
3.microtubules are the core of cilia, microfilaments are core of microvilli
4.microtubules are bigger than microfilaments
compare and contrast: ribosomes vs. nucleolus - Answers -✔✔ ribosomes (rER)
translate proteins for export, nucleolus synthesizes ribosomes
2.both are non-membrane bound
3.ribosomes come from nucleolus
compare and contrast centrioles vs cilia - Answers -✔✔ 1.centrioles are organelles,
cilia are not
2. centrioles have 9 triplets, cilia have 9 doublets plus 2
3. both have microtubules
4. cilia=movement. centrioles= organize cell division
compare and contrast: golgi vs. rER - Answers -✔✔ 1. golgi has double membrane,
rER has a single
2.golgi is responsible for packaging and sorting (glycosylation), rER transports protein
components to golgi.
3.rER is a site of translation
2 types of epithelium that act as a primary line of defense - Answers -✔✔ 1.stratified
2.keratinized epithelium
epithelium associated with secretion - Answers -✔✔ glandular epithelium
epithelium associated with diffusion of gases - Answers -✔✔ simple squamous
epithelium
epithelium lining small intestine - Answers -✔✔ simple columnar with microvilli and
goblet cells
epithelium associated with respiratory tissue - Answers -✔✔ pseudostratified columnar
with cilia and goblet cells
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