Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
28 Cards in this Set
- Front
- Back
A cell with 10 chromosomes undergoes mitosis and cell division. How many daughter cells are produced and what number of chromosomes do they have? |
Two Daughter Cells and ten chromosomes each. |
|
Which eukaryotic cell cycle event is missing in binary fission? |
Karyokinesis
|
|
A duplicated chromosome typically has how many molecules of DNA? |
2 |
|
A mutated gene that codes for an altered version of Cdk that is active in the absence of cyclin is a(n) _____. |
Proto-Oncogene |
|
A gene that codes for a positive cell cycle regulator is called a(n) _____. |
Proto-Oncogene |
|
A human cell fails to undergo cytokinesis while performing mitosis so that they daughter cells do not form. How many chromosomes will be in the resulting cell? |
92 |
|
Which negative regulatory molecule can trigger cell suicide (apoptosis) if vital cell cycle events do not occur? |
p53 |
|
The genes that malfunction in cancer normally |
Regulate cell division |
|
If cells in the process of dividing are subjected to colchicine, a drug that interferes with the functioning of the spindle apparatus, at which stage will mitosis be arrested? |
Anaphase |
|
The fusing of Golgi vesicles at the metaphase plate of dividing plant cells forms what structure? |
Cell plate |
|
Which protein is a positive regulator that phosphorylates other proteins when activated? |
cyclin-dependent kinase (Cdk)
|
|
Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis? |
Telophase |
|
Separation of the sister chromatids is a characteristic of which stage of mitosis? |
Anaphase |
|
A plant cell has 12 chromosomes at the end of mitosis. How many chromatids would this plant cell have in the G2 phase of its cell cycle? |
24 |
|
Which of the following events does not occur during some stages of interphase? |
separation of sister chromatids
|
|
One of the major differences in the cell division of prokaryotic cells compared to eukaryotic cells is that |
the chromosomes do not separate along a mitotic spindle in prokaryotic cells. |
|
During which phase do chromosomes become visible? |
Prophase |
|
DNA synthesis happens during mitosis.
|
False |
|
If there are 20 centromeres in a cell, how many chromosomes are there? |
20 |
|
Identical copies of chromatin held together by cohesin at the centromere are called _____. |
Sister chromatids |
|
A plant cell has 12 chromosomes at the end of mitosis. How many chromosomes would it have in the G2 phase of its next cell cycle? |
12 |
|
What is the main prerequisite for clearance at the G2 checkpoint? |
accurate and complete DNA replication |
|
The mitotic spindles arise from which cell structure? |
centrosome |
|
Which of these events occurs during anaphase? |
centromeres divide
|
|
How many sets of chromosomes does a normal human cell have? |
46 |
|
Attachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis? |
Prometaphase |
|
The first level of DNA organization in a eukaryotic cell is maintained by which molecule? |
Histone |
|
A cell is in metaphase if |
the chromosomes are aligned at the midplane of the cell. |