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BIO 446L Exam 1 Study Questions and Correct Answers
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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...

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  • August 17, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bio 446l exam 1 study questions and correct answer
  • cholesterol in the plasma membrane can gather toge
  • whats the purpose of the folding of the inner mem

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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 tissue functions (5) ✅mechanical protection
Absorption
Lubrication
Diffusion
Secretion

Mnemonic: malds

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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