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ASU Bio 181 Exam 1- Questions & Answers
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ASU Bio 181 Exam 1- Questions & Answers
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ASU Bio 181 Exam 1- Questions &Answers
Where is the histone H1 found? Correct Ans-they are found in eukaryotic cell nuclei
T/F the diameter of an intermediate filament is 25 nm. Correct Ans-false
T/F the actin filament system is present in the nucleus Correct Ans-false
T/F to get into the nucleus a component has to have the correct signal sequence and pass
through a nuclear pore. Correct Ans-True
which cytoskeleton filament system lines the inside of the nucleus to protect it? Correct Ans-
microtublues
T/F cilia and microvilli contain a similar number of parallel actin filaments Correct Ans-false
T/F naked DNA does not exist in nature of parallel actin filaments Correct Ans-false
T/F naked DNA does not exist in Nature but scientists can make naked DNA in a test
tube. Correct Ans-true
what does the nucleosomal core have in it (ie the basketball like structure on the
slides)? Correct Ans-histones
T/F molecular motor use ATP as the energy source to power the molecular motor. Correct
Ans-true
, T/F the actin filament system extends outside of the cell Correct Ans-false
T/F heterochromatin does not exist in interphase nuclei Correct Ans-false
T/F many chemotherapy drugs act by arresting the cell in m phase of the cell cycle. Correct
Ans-true
T/F gap 1 of the cell cycle represents the time when the cell is doing what its suppose to do as
part of its cell type. in other words, that is when a liver cell is doing it function as a liver
cell. Correct Ans-true
list the three categories of cells in the body with regard to the cell cycle: Correct Ans-1) cells
that never go through the cell cycle again once you're born (neurons, muscles)
2) cells that can be induced to go through the cell cycle by injury (liver)
3) cells that are constantly going through the cell cycle. (skin, blood cells, intestine/enterocytes)
T/F cytoplasmic signal transduction controls the checkpoints of the cell cycle. Correct Ans-
true
T/F in your body not all cells go through the cell cycle Correct Ans-true
T/F at these checkpoints a cyclin works with a cyclin-dependent kinase (i.e cdk) to regulate the
checkpoint. Correct Ans-true
T/F cancer can be described as a loss of cell cycle regulation. Correct Ans-true
the activation of both MPF and MAPK results in _______ _______ (two words) of the cytoplasm
during M-phase. Correct Ans-setting down
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