Reproduction_all_final.doc

Reproduction_all_final.doc - BME 111 Quiz 15 Questions:...

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BME 111 Quiz 15 Questions: Reproduction 1) Implantation occurs at the _______ stage -ova -zygote -embryo -morula -blastocyst -fetus 2) Bone marrow stem cells respond to substrate elasticity and mechanical stretch forces by changing what cell types they will differentiate into. -True -False 3) Embryonic stem cells -May be derived from embryos not used after in vitro fertilization -May be derived from 1 or 2 cells of a morula stage embryo that then is implanted -May be formed by treating an ovum so that it divides mitotically -May be formed by transferring a diploid nucleus into an ovum, then treating it so that it divides mitotically -All of the above 4) In the female, estradiol (estrogen) -causes luteinizing hormone release from the anterior pituitary if progesterone levels are increasing -stimulates proliferation of the endometrium -levels decrease if fertilization of the ovum does not occur -All of the above 5) The embryo undergoes several rapid rounds of mitosis while in the fallopian tube to produce a morula. -True -False 6) At the blastocyst stage cells are either committed to form part of the placenta or contribute to the fetus. -True -False 7) Placentation -allows nutrients to be transferred from the mother to the fetus -allows waste materials from the fetus to be transferred to the mother -allows blood to be transferred to the fetus -All of the above -A and B 8) Stem cells include -Tissue specific progenitor cells that are typically used by the body to repair a specific tissue -Bone marrow stem cells that can produce several different cell types -Cells found in the umbilical cord blood that can produce several different cell types -Hematpoietic stem cells in the bone marrow -All of the above -B and D 9) Sexual reproduction increases genetic variability in the population. -True -False
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10) Homologous chromosomes (that is both copies of chromosome pair) separate/ line up next to each other -during meiosis I prophase -during meiosis I metaphase -during meiosis I anaphase -during meiosis II anaphase 10b) Homologous chromosomes separate during meiosis I prophase during meiosis I metaphase
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This note was uploaded on 08/27/2009 for the course BIO 123667 taught by Professor Pauken during the Spring '09 term at ASU.

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Reproduction_all_final.doc - BME 111 Quiz 15 Questions:...

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