5-6-7

Q1: Which is the best description of the subunit of tubulin?

• monomer

• Dimer

• octamer

• polymer

Q2: What is the origin of microtubules?

• Peroxisome

• Centrosome

• Centromere

• Chromosome

Q3: Rearrange these types of cytoskeletons below in the increasing diameter:

• Intermediate filament

• Microfilament

• Microtubule

Q4: Microtubule is composed of how many protofilaments?

• 9

• 11

• 13

• 15

Q5: The cytoskeleton of a cell can generate movements such as in cytokinesis, or propulsive forces outside the cell like flagella. Which structures are linked with these two movements?

• Microtubules and intermediate filaments, respectively

• Microfilaments and microtubules, respectively

• Microfilaments and intermediate filaments, respectively

• Intermediate filaments and microtubules, respectively

Q6: DNA duplication happens in which phase?

• G1

• S

• G2

• M

Q7: This figure describes which phase of mitosis?

• Prophase

• Metaphase

• Anaphase

• Telophase

Q8: Which of the following mitosis process – characteristic pairs is true?

• Metaphase of mitosis – crossing over occurs

• Interphase of mitosis – kinetochore microtubules attach at centromeres

• Anaphase of mitosis – sister chromatids separate and move toward opposite poles

• Prophase of mitosis – synapsis occurs

Q9: Human being has how many pairs of chromosomes?

• 24

• 48

• 46

• 23

Q10: The picture depicts what phase of meiosis?

• Prophase I

• Prophase II

• Anaphase I

• Anaphase II