Which of the following statements about cell division and cells is true? a)  Adults have much larger cells than children, and adults have many more cells than children. b)  Adults and children have cells that are about the same size, and both children and adults have about the same number of cells. c)  Adults and children have cells that are about the same size, but adults have many more cells than children. d)  Adults have much larger cells than children, but both children and adults have about the same number of cells.

Regarding the following statement: “Human females are a mosaic of cell types” (2-3 sentences maximum per answer) A) What is the basis for this cellular mosaicism?  B)  Why has this female-specific mosaicism evolved? ? C) What is the molecular (molecular = proteins, nucleic acids, other small molecules) basis of this mosaicism ?

At the end of which phase(s) of the mitotic cell cycle does each chromosome consist of two sister chromatids? Indicate all correct answers – more than one answer is correct. a) G1 of interphase b) G2 of interphase c) anaphase  d) metaphase e) prophase f) telophase

You have been asked to do a strucutural study to understand how increasing cell surface area affects cell size, cell shape and functions. What cell type would help you most efficiently observe the effects of increasing surface area?  Choices:  A. Monocytes from the blood serum. Monocytes are largely roughly spherical cells.  B. Red Blood cells from the bone marrow. The shape of Red blood cells is a biconcave disk and looks like a donut. C. Stem cells from skin. In this case assume a skin stem cell is flat and plate like.  D. Microvilli covered cells from the intestines. Microvilli are tiny hair like protrusions in the plasma membrane of intestinal cells that increase the absorption of nutrients in the intestines.

What does Homoplasmic mean?

What is the genetic significance of mitosis (I.e., how do the daughter cells compare to the original parent cell on their genetic makeup)?

What happens to a cell with damaged DNA?   a)  The cell is destroyed.   b)  It leaves the cell cycle to join all the other damaged cells.   c)  Nothing. Cells can’t tell the difference.   d)  A nurse cell helps to repair the cell.

Which of the following does not occur during mitosis? (a) (b) (c) (d) Chromatin condenses and forms chromosomes. Chromosomes move to the equator of the cell. Spindle fibres pull homologous chromosomes to opposite poles of the cell. Two new nuclei are formed that have two full sets of genetic information.

The stages of the cell cycle, are in part, regulated by A) sister chromatids B) G2 C) ploidy D) cyclin concentrations

Which of the following is true with respect to cyclins and CDKs? A) CDKs promote progression of the cell cycle, cyclins function to inhibit progression of the cell cycle B) CDKs are the checkpoints in the cell cycle, and when bound to cyclins, they stop progression of the cell cycle C) CDKs will only work to promote progression of the cell cycle when complexed with their designated cyclins D) CDKs are rarely expressed during a cell's cycle, unless cyclins are present to act as transcription factors .