Functional anatomy of cells
What is the function of muscle cells?
allow movement of body parts
Where is the cell membrane located?
Outside boundary of cell.
What kind of molocueles does a nucleus contain?
DNA.
What organelle extracts energy from nutrient molecules to build ATP (Adenosine Triphosphate)
What is the main macromolecule component of the cytoskeleton?
Proteins
What is the function of immune cells?
recognize and destroy "nonself" cells such as cancer cells and invading bacteria (protective function)
What does chloesterol help the bilayer with?
Stabalization.
Where is the nucleus located in a cell?
The center.
What animal-cell organelles are double-membrane bound?
Nucleus & Mitochondria
What are the smallest cell fibers of the cytoskeleton?
Microfilaments
What are the 3 main cell structures?
1. the plasma membrane
2. cytoplasma including the organelles
3. the nucleus
How are the molecules that make up cell membrane arranged?
In a sheet pattern.
What does NPC stand for, in terms of a nucleus?
Nuclear Pore Complexes.
What are attached to the membranous sacs of the Rough ER?
Ribosomes
What do centrosomes do in mitosis/meiosis?
Spindle fibers of the centrosome attach to the kinetochores of duplicated chromosomes.
Describe Ribosomes
Small particles assembled from two tiny subunits of rRNA and protein
What are the forces that hold a membrane together?
Ester bonds.
What do all nuclei have in common?
The same density.
What functions do the golgi apparatus perform?
The golgi apparatus modifies and packages proteins into membranous vesicles for either secretion or storage.
What are any of the three types of cell extensions?
What does an Angstrom (unit) equal to in meters and what do you usually measure with this unit?
it equals to 1/10.000.000 meters and it's used to measure molescules and atoms
What do the "rafts" of the cell do?
They organize functions at the surfaces of the cells and organelles.
What is the double membrane structure that encloses the nucleus?
What is the process known as "self eating," where lysosomes break down unused proteins and molecules.
Autophagy
What is the significance of molecular motors?