What are the 4 components to the cell membrane?
phospholipid bilayer, microvilli, filaments, microtubules
microvilli, transport proteins, phospholipid bilayer, carbohydrates
Membrane carbohydrates, microvilli, phospholipid bilayer, membrane proteins
The trans-membrane proteins are on the outer or inner membrane surfaces and do not penetrate the membrane itself.
What is NOT contained in the Cytosol?
Inclusions such as Melanin
Steroids
Dissolved ions
Protein Fibers
The function of the Ribosome is to synthesize RNA.
Centrioles are composed of ...
Microfilaments
Microtubules
Tubulin
Actin
Both B & C
Both A & B
Which is NOT a function of the Cytoskeleton?
Functions to anchor organelles in place
Functions in muscle contraction, cell locomotion & maintenance of cell shape
Functions to move things throughout the cell
Functions in cell to cell recognition
Both B & D
Microtubules compromise...
Centrioles, Flagella, Cilia, and Spindle Apparatus
Centrioles, Ribosomes, Flagella, and Microvilli
Centrosomes, Ribosomes, Cilia, and Spindle Apparatus
None of these are correct
Which does NOT have a double membrane?
The Nucleus
Golgi Apparatus
Mitochondria
All of these have double membranes!
What is NOT contained in the Mitochondria?
Water
Protein
DNA
All of these are contained inside the Mitochondria
What was the origin of the Mitochondria?
Bacteria
Developed from the Golgi Apparatus
Space!!
What a stupid question... the mitochondria has always been the mitochondria
What is NOT true about the Smooth Endoplasmic Reticulum?
There is nothing bound to it
Important for detoxification
Stores Calcium
Creates lipids
Has Ribosomes bound to it
Both C & E
The Golgi Apparatus is stacks of membranous disks
Where do the packaged protein vesicles from the Golgi Apparatus NOT move to...
Lyzosomes
Cell Membrane
The vesicles are suspended in the Cytosol
Both C & D
In the Golgi Apparatus, the Protein is mixed with Carbohydrate groups before it is packed into a vesicle.
Lyzosomes function to destroy...
Old cells
worn out organelles
bacteria
all of the above
A & C
The outer nuclear membrane is attached to the Golgi Apparatus.
The Nucleolus is membraneous.
Cells that naturally make a lot of protein have a lot of...
Ribosomes
Rough ER
Vesicles from the Golgi Apparatus
None of the above, these cells just contain more protein.
Coiled DNA is called Chromatin.
Males & Females contain 23 homologous chromosomal pairs.
The haploid number is ...
referred to as n
the number of different chromosomes that a given species will have
the number of chromosomes an individual will have from BOTH parents
All of these are correct
A & B
Cytokinesis only occurs in Mitosis
G1 phase is...
7 hours long
8-10 hours long
6-8 hours long
1 hour long
At the end of G1 phase...
Centrosomes replicate
DNA is replicated, creating Sister Chromatids
Kinetochore proteins are formed
Nuclear envelope dissapears
Cells that do not divide again once they reach maturity do not proceed on to S phase, but rather remain in G1 phase.
What is NOT true about the Kinetochore protein?
They attach to the centromere of ONE tetrad
They attach to the centromere of ONE chromosome
They are a DNA/Protein complex
Occur before both Meiosis and Mitosis
A & D
All of these are true
G2 phase lasts roughly 3 hours
During Metaphase, In humans it shows we have HOW MANY chromosomes lined up?
46
23
92
During Prophase, Kinetochore proteins attach to spindle microtubules which are then called Kinetochore microtubules.
During Metaphase, the chromosomes lined up are called what...
The cell equator
The Metaphase plate
The cleavage furrow
There is no name for these chromosomes
Meiosis creates 4 diploid cells.
What is NOT true about Meiosis 2?
Resembles Mitosis
Takes a diploid cell and turns it into a haploid cell
Separates homologous pairs
None of these are true!
Both A and C
Both B and C
A tetrad is...
A sister chromatid
6 Chromosomes lined up
2 Sister chromatids lined up
A tetrad does not imply to this unit
Crossing over takes place in both Meiosis and Mitosis.
Interphase may take place during Meiosis 1 and Meiosis 2.
How many tetrads are lined up on the Cell Equator?
12
The key difference between Mitosis and Meiosis 2 is that Mitosis works with a haploid cell and Meiosis 2 works with a diploid cell.