By what mechanism(s) do protists reproduce?
What will be an ideal response?
Protists reproduce by both asexual methods, which yield two identical organisms, and sexual methods, which combine the genetic material of two organisms.
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Which of the following is not a characteristic of Bicoid protein?
A. Bicoid is a maternal gene product. B. Throughout the first seven nuclear divisions, Bicoid concentration is higher in the anterior pole than the posterior pole. C. Bicoid represses Hunchback in the posterior pole. D. Bicoid is a transcriptional activator of many segmentation genes.
Choose the letter that best describes the function of this receptor type: Merkle cell
A. tonic receptors located near the surface of the skin B. pressure sensitive receptors deep in the subcutaneous layer C. receptors on the face and fingertips sensitive to light touch
Which of the following would be an appropriate stimulus for a mechanoreceptor?
A. pH B. Photon of light C. Oxygen D. Cell Stretch E. Cold Temperature F. Candy
Dynamic assembly and disassembly of a cytoplasmic microtubule in a cell occurs primarily at its plus end, because its minus end is usually anchored to
A) a basal body. B) a centromere. C) a microtubule organizing center. D) a mitochondrial outer membrane. E) the plasma membrane.