Flatworm parenchyma cells that are stem cells: O A. pigment cells O B. fixed parenchyma cells O C. neoblasts cells D. neural crest cells E. chromatophores
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Q12: E is not the correct answer, what is the correct answer
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- You are studying a mutant cell. When it migrates, it creates filopodia, lamellipodia but not stress fibres. This is likely a A. Cdc42 mutant B. WASP mutant C. WAVE mutant D. Rho mutantWhat are extrusomes?a. hairs on flagellab. membrane sacs beneath the cell surfacec. tough-walled asexual cellsd. spearlike defensive structures shot from cells under attacke. special types of survival cystsPlants develop from stem cells called O A. blastocyst B. meristems C. embryonic stem cells D. adult stem cells
- Choose the one answer that fits best. This onion root cell is in Oa. Interphase O b. Prophase c. Telophase d. Anaphase e. Metaphase3) Explain giving appropriate reasoning why the neoblasts are considered the following a. A stem cell: b. Pluripotent c. Neoblasts are the only dividing cells in the planarians body-Is this statement true or false? Justify with reasons. d. Discuss the role of neoblasts in the planarian regeneration. What would happen if all except ONE neoblast was killed by irradiation? Would the planarian be able to regenerate and build the neoblast population? e. What role do neoblasts play in the maintenance of the planarian anatomy?The light- sensing units of ___________ are called "Ommatidia" and are composed of a series of ____ cells. A. Caenorhabditis elegans; 10 B. Bacillus subtilis; 7 C. Osmia lignaria; 3 D. Drosophila melanogaster; 7
- In the course of double fertilization, one sperm cell fuses with the egg and the second one fuses with ________. a. the synergids b. the polar nuclei of the center cell c. the egg as well d. the antipodal cellsThe products of budding are a. two cells of equal size. b. two cells, one of which is smaller than the other. c. many cells of equal size. d. many cells of variable size.What is necessary to make a cleavage furrow during cytokinesis? A. Kinesin "walking" along microtubules B. Myosin filaments shortening C. Actin and myosin-mediated contraction D. All of the above E. None of the above
- Bicoid is normally found at one end of a fly egg. A defective form of bicoid results in an embryo with two tail ends. If the normal form of bicoid was placed at both ends of an egg what would be the result? Group of answer choices A. a normal larva B. a fly with body parts in the wrong regions C. an embryo with two tail ends D. an egg with no cell division E. an embryo with two head endsGive five cell types and indicate their characteristics and how doe this characteristic help the cell in doing its functionEmbryo is a solid ball of cells 2. (a) Describe the difference between pluripotent and multipotent stems cells.
