BioA U7 Review

How can you tell by looking at a cell if it is in anaphase?

• the chromosomes are pulling apart

• the chromosomes are lined up in the middle

• the chromosomes are in a circular blob

• you can't tell by looking at it

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Place the phases of a stem cell into the correct order

• mitosis, specialization, gene expression

• mitosis, gene expression, differentiation

• differentiation, mitosis, specialization

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Which general type of cell do fibroblasts make?

• heart

• blood

• tissue

• neural

During mitosis, what happens to the parent cell?

• it produces 3 daughter cells

• it produces 1 daughter cell

• it produces 4 daughter cells

• it produces 2 daughter cells

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Which is true about mitosis?

• takes one cell and replicates it into two genetically identical cells

• takes one cell and replicates it into four cells, each splitting parents genes

• takes one cell and replicates it into two unique cells

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Immediately after an embryo forms, it begins to replicate new cells. What is the most likely type of cells that form during the first few divisions?

• pluripotent

• totipotent

• multipotent

• unipotent

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Why is mitosis a longer and more complicated process of cell division than binary fission?

• mitosis has check points that must be met to continue the cycle

• mitosis occurs in the cytoplasm and does not require a nucleus

• binary fission does not replicate DNA

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Some differentiated cells become senescent almost immediately, leaving the cell cycle and undergoing terminal differentiation. Other cells have a high need to proliferate in order to grow and repair the organ or tissue, so they do not enter senescence for a long period of time. Which cell type would be most likely to put off senescence and terminal differentiation so it could continue to replicate in order to grow and repair?

• heart

• skin

• brain

• lung

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When scientists and doctors are looking to heal wounds and cure diseases, stem cells are a great option because they can repair damage and grow new specialized cells. From the list, which type of stem cell would be the best option for healing the widest variety of diseases?

• embryonic stem cells

• bone marrow stem cells

• small intestine stem cells

• skin stem cells

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What is the importance of microtubules in cell division?

• they start the process of cytokinesis

• the reform the nucleus in the divided cell

• they organize and pull the chromosomes apart

• they provide a pathway for organelles to move