Unit 3: Cellular Level Flashcards
Name the 3 principle parts of the cell
Cell membrane, cytoplasm, nucleus
What are the 2 types of membrane proteins and where are they located?
Integral and peripheral proteins. Integral proteins are found in the cell membrane and may even stretch across it (transmembrane). Peripheral proteins are found attached to either surface of integral proteins.
Name at least 3 functions of membrane proteins
Enzymes, transporters, channels, receptors, anchors, identity markers (for immune system
These are found only on the outer surface of a cell and they function for cell recognition and anchoring cells together
Membrane carbohydrates
Small projections of the cell membrane that are designed to increase surface area
Microvilli
What are the 2 aspects of cytoplasm?
Cytosol and organelles
Are centrosomes membranous or non-membranous?
Non-membranous
What is the purpose of a ribosome? What are the different types?
Protein synthesis
Free in the cytosol or attached to rough endoplasmic reticulum
The spindle apparatus is a form of which organelle, and what is its primary purpose?
It is a form of the cytoskeleton and its purpose is to separate sister chromatids during mitosis
This is found within the cell membrane. Its primary purposes are to provide stability to the membrane and synthesize steroids
Cholesterol
Mitochondria and the endoplasmic reticulum are both examples of (membranous/non-membranous) organelles
They are both membranous, meaning they are both surrounded by a membrane that isolates them from the cytosol
The primary role of this organelle is to modify and pack proteins
Golgi apparatus
Provides the clean up function for cells
Lysosomes
The _______ _______ is a double membrane with nuclear pores
Nuclear envelope
True or false: Both DNA and RNA are created in the nucleolus
True
