multiple choice key exam1

multiple choice key exam1 - Name_ Bio 349 Fall 2009 1....

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Name_________________________________________ Bio 349 Fall 2009 1. Which of the following statements about fertilization/egg activation is not true? A. Phospholipase C cleaves PIP 2 into IP 3 and DAG B. DAG causes Ca ++ to be released from the endoplasmic reticulum C. Ca ++ release causes the cortical granule reaction D. Conversion of NAD + to NADP + promotes membrane biosynthesis 2. A totipotent cell is capable of differentiating into A. only neurons B. most types of cells C. any type of cell D. only cells derived from endoderm 3. The neural plate changes shape from a flat sheet of cells and fold in upon itself to form a hollow tube called the neural tube. This is an example of A. convergent extension B. differentiation C. morphogenesis D. autonomous specification 4. A metazoan is A. multicellular and eukaryotic B. singled celled and prokaryotic C. multicellular and prokaryotic D. a protist 5. What types of genes are highly expressed in metazoans, compared to non- metazoans A. cell signaling genes B. cell cell adhesion genes C. transcription factor genes D. all of the above 6. Which of these statements is correct? A. during gastrulation deterostomes generate anus first, while protostomes generate the mouth first B. during gastrulation protostomes generate anus first, while deterostomes generate the mouth first C. both deuterostomes and protostomes are triploblasts D. A&C 7. Ingression is when A. individual cells migrate into the embryo B. a sheet of cells expands over another sheet C. one sheet of cells splits into two sheets D. a sheet of cells fold inward over themselves
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Name_________________________________________ Bio 349 Fall 2009 8.What two factors determine the type of cleavage an embryo uses? A. yolk and MPF B. MPF and cytoplasmic determinants C. yolk and spindle orientation D. MPF and spindle orientation 9. The fast block to polyspermy in sea urchins can be inhibited by A. blocking Ca++ release from the ER
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multiple choice key exam1 - Name_ Bio 349 Fall 2009 1....

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