BIO 446L Exam 1 Study Questions and Correct Answers
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Course
BIO 446
Institution
BIO 446
Cholesterol in the plasma membrane can gather together to form a _______ lipid raft
What's the purpose of the folding of the inner membrane crustal? to increase surface area
This organelle has a role for assembling polypeptides
A. Golgi apparatus B. Ribosomes C. Nucleus b. Ribosomes
In erad, wh...
BIO 446L Exam 1 Study Questions and
Correct Answers
Cholesterol in the plasma membrane can gather together to form a _______ ✅lipid raft
What's the purpose of the folding of the inner membrane crustal? ✅to increase surface
area
This organelle has a role for assembling polypeptides
A. Golgi apparatus
B. Ribosomes
C. Nucleus ✅b. Ribosomes
In erad, what's the target protein and what attaches onto the target protein? ✅target
protein = badly folded protein
Ubiquitin
T or f: the free aa that's generated from erad can't be reused ✅f; they can be reused
Four functions of the er ✅1. Synthesis
2. Transport
3. Storage
4. Detoxification
Describe the different types of signaling in cell communication ✅1. Endocrine -->
involves hormones
2. Paracrine --> signals to neighboring cells
3. Synaptic --> involves nts
3 functions of the cytoskeleton ✅1. Determine shape of cell
2. Movement of organelles
3. Movement of cell
Which cytoskeleton structure does this describe?
"important for anchorage, movement of the cell, and forms the structural core of
microvilli" ✅microfilaments
Which cytoskeleton structure does this describe?
"important for support and structure of the cell" ✅intermediate filaments
, Which cytoskeleton structure does this describe?
"important in cell division" ✅microtubules
Among the intermediate filaments, ____________ is found in epithelial cells ✅keratin
Among the intermediate filaments, _______ are medoderm-derived cells like muscle
and glial cells ✅vimentin
T or f: epithelial tissue is composed of closely packed cells with lots of extracellular
material b/w cells ✅f; there's little extracellular material b/w cells
Compare and contract epithelial tissue and connective tissue ✅epithelial: avascular,
has nerve supply, has free surface
Connective: vascular, has nerve supply, no free surface
Epithelial lining the cavity of internal organs rest on the __________
A. Hypodermis
B. Basal membrane
C. Lamina propria ✅c. Lamina propria
What's the equivalent to lamina propria for the skin?
A. Dermis
B. Hypodermis
C. Epidermis ✅dermis
Since epithelial cells rest on connective tissue, what are the evaginations in the
connective tissue called and why is it important? ✅papillae; important for maximizing
diffusion and anchoring the connective tissue and epithelium together
The basement membrane is formed by
A. Two nuclei
B. Two laminae
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