05: Cell Structure and Function Flashcards
1
Q
Cells
A
Building blocks from which all parts of the human body are formed
2
Q
Plasma Membrane
A
- Selectively permeable
- controls what substances are allowed to enter and exit
- primarily composed of phospholipids
- form a bilayer with nonpolar fatty acid tails facing one another in the center
- polar phosphate heads face the extracellular fluid outside the cell and the intercellular fluid within the cell
3
Q
Cytoplasm
A
- Composed of cytosol
- clear fluid
- Numerous cytoplasmic organelle
4
Q
Microvilli
A
- Increase the surface area of the plasma membrane
5
Q
Cilia
A
- Assist in movement of substances across the plasma membrane
6
Q
Flagella
A
- Involved in cell mobility
7
Q
Glycocalyx
A
- Cell identity marker
- glycolipids
- glycoproteins
8
Q
Nuclear Envelope
A
9
Q
Chromatin
A
- Consist of DNA
- Structural proteins
- Regulatory proteins
- Condenses to form chromosomes during cell division
10
Q
Nucleolus
A
11
Q
Endoplasmic Reticulum (ER)
A
12
Q
Rough Endoplasmic Reticulum (RER)
A
13
Q
Smooth Endoplasmic Reticulum (SER)
A
14
Q
Ribosomes
A
15
Q
Golgi apparatus
A
- Composed of flattened membranous sacs
- site of packaging glycoproteins for transport and secretion
