Biology Lab: Mitosis Flashcards
The stage of the cell cycle where each chromosome is composed of two chromatids in
preparation for mitosis?
G2
The class of enzymes that are involved in triggering events in the cell cycle are called:
Kinases
Which sequence of the cell cycle is common to eukaryotes?
G1 to S to G2 to M to cytokineses
The stage of the cell cycle where the cell is preparing to begin DNA replication is called:
G1
The proteins which complex with DNA producing the “beads on a string” or nucleosomes are called:
His tones
Which of the following features of cell division are very different for animal and plant cells?
Cytokinesis
Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called
Sister chromatids
The first stage of mitosis when chromosomes start becoming visible in the microscope is called:
Prophase
The sputum (fluid coughed up from the lungs) of many smokers contain cells with mutations (errors) in the genes for p53. The smoking induced mutations appear to be an
early signal showing that cancer of the lungs will follow. What is the likely relationship between early p53 mutation and the development of lung cancer?
Mutations in p53 would prevent abnormal cells from dying by apoptosis.
Which of the following statements is NOT true of mitosis?
Homologous chromosomes synapse in prophase.
Cytokinesis in a plant cell is characterized by:
the formation of a cell plate in the cytoplasm
What is the purpose of the mitosis lab?
To understand the sages of mitosis and what they look like under a microscope.
What are some differences between cell division in plant and animal cells?
Animals cells have centrioles, cytokinesis and cleavage furrow. Plant cells do not have centrioles but instead microtubules and cell plate
What can you under about the time a cell spends in each stage of cell division based on the number of cells found in that stage.
The stage with the most cells has the longest time spect and vice versa
Do cells spend an equal time in each stage of cell division?
It varies but most cells spend the most time in interphase
