Cytoskeleton and Mitosis/Meiosis Flashcards
What are the 3 Components of the Cytoskeleton?
Microfilaments
Intermediate Filaments
Microtubules
What protein are microfilaments made of?
Actin
What protein are microtubules made of?
Tubulin
What is the function of the microfilaments?
Cell movement support
Process extension
What is the primary function of the microtubules?
Formation of the mitotic spindle
Individual tubules help with intracellular transport
What is the job of the intermediate filaments
Support
What makes up the core of cilia and flagella?
Microtubules
What is the centriole?
One half of the diplosome
Made of microtubules
What organelle is the diplosome usually found near?
Golgi
What type of filaments are the spindles coming from the diplosomes during cell division?
Microtubules
In general, what is the shortest phase of the cell cycle?
M Phase
What phase does the cell grow?
G1
What phase of the cell cycle does DNA synthesis occur?
S Phase
During what phase does the cell division machinery get synthesized?
G2
True/False: A cell in mitosis has 23 pairs of chromoses at all times (always diploid)?
True. Right before division, the cell has 23 replicated pairs, but it is still diploid because the “twins” are still connected as sister chromatids
During what phase of mitosis does the cleavage furrow form?
Anaphase
During what phase does the nucleolus and nuclear envelope reform?
Telophase
What is the point of meiosis?
To create haploid gametes (Ovum/Sperm)
Which phase of meiosis is called reductional division?
I
When does the cell become haploid, meiosis I or II?
Daughter cells of Meiosis I
