EXAM 3 Flashcards
What is an important characteristic of Secretory Vesicles?
-They fuse w/ the cell membrane during exocytosis
What are the important characteristic of Primary Lysosomes?
- They contain hydrolytic enzymes that gotta be segregated from the rest of the cell
- They bud off the Trans Golgi
What is Receptor-Mediated Endocytosis?
- It is endocytosis mediated by receptors of LDL
- So it brings LDL’s into the cell
What is the role of Chloroplasts?
- They reduce CO2 compounds to make lots of H
- They also have 3 membranes
What are the important characteristics of Intermediate Filaments in the cytoskeleton?
- They have the intermediate thickness
- They also form the Nuclear Lamina
What is the layer that separates epithelial cells from the rest of the body?
-The basil lamina
What is the basil lamina made of?
-Proteins & carbohydrates
What does the basil lamina contain that attaches it to the epithelial cells?
-Hemidesmosomes
What is the order of the compartments of mitochondria going inside out?
Matrix, inner membrane, intermembrane space, outer membrane
What is the permeability of triglycerides due to?
-It is due to the permeability of nonpolar molecules in the phospholipid bilayer
What are the characteristics of integral membrane proteins?
- They include channel proteins
- They also contain a transmembrane domain
What does the Fluid Mosaic Model state?
-It states that membrane lipids & membrane proteins are free to move around the plane of the phospholipid bilayer
What is found in the plasma membrane?
- Phospholipids
- Cholesterol
- Transporter proteins
- Sphingolipids
What is Facilitated diffusion?
-It is the movement of molecules through carries or channels down the concentration gradient
What will the fatty acids of an organism living in warm temperatures do?
-It will make longer & more saturated fatty acids for its membrane than an organism living in cold temps