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Choose true or false. Each right answer scores 1, and each wrong answer scores -1. Not answered questions score 0.
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1) Some cells never divide.
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2) The somatic cells of animals can perform meiosis and produce gametes.
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3) The number of cell divisions of somatic cells in animals is controlled by other cells of the organism, as well as by the features of the somatic cells.
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4) During the cell cycle, the G2 phase takes place before the S phase.
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5) The interphase encompasses the G1, S, and G2 phases of the cell cycle.
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6) Cells choose to divide or not during the G1 phase.
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7) Cells that differentiate to carry out a function quit the cell cycle during the G1 phase.
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8) The progression of the cell cycle is driven by phosphorylation and dephosphorylation processes.
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9) Cyclins are proteins synthesized only during the S phase, together with the DNA.
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10) During the S phase of the cell cycle of eukaryote cells, the replication of DNA starts at one point of the DNA strand.
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11) Primers are DNA sequences needed to separate both DNA strands during replication.
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12) In animal cells, centrosomes are duplicated during the G1 phase.
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13) The M phase is the cell cycle stage where cell division happens. |
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14) The nuclear envelope is disorganized during metaphase. |
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15) Kinetochoric microtubules contact chromosome kinetochores. |
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16) During anaphase, the two centrosomes are duplicated, so there are four centrosomes, and each daughter cell inherits one of the two pairs of centrosomes. |
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17) The division furrow is parallel to the major axis of the mitotic spindle. |
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18) In animal cells, cytokinesis is driven by microtubules. |
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19) In plant cells, the physical separation of the two daughter cells is by assembling a new cell wall between them. |
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20) In plants, the direction of the growth of an organ is determined by the orientation of the mitotic spindle. |
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21) This cell is in metaphase.
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| 22) This cell is in prophase.
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| 23) This cell is in anaphase.
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| 24) This cell in prophase.
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| 25) This cell is in metaphase.
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| 26) This cell is in anaphase.
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| 27) This cell is in metaphase.
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| 28) In this image, 3 telophases, 1 metaphase, and 1 prophase are observed.
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