Exam, #2 SS2 Bio 201 2018 1. A centriole is an organelle that is: a. present in

Question

Exam, #2 SS2 Bio 201 2018 1. A centriole is an organelle that is: a. present in the center of a cell's cytoplasm b.composed of microtubules and important for organizing the spindle fibers c. surrounded by a membrane d part of a chromosome 2. The rough endoplasmic reticulum is: a-an intracellular double-membrane system to which ribosomes are attached b. an intracellular membrane that is studded with microtubular structures c. a membranous structure found within mitochondria d. only found in prokaryotic cells 3. In the nucleus of eukaryotic cells, the genetic material is complexed with protein and organized into linear structures called: a. centrioles b. histones chromosomes d plasmids

Explanation / Answer

Amazing all chosen options are right!!

Answer 1. Centrosome is a cell organelle confined to the animal cell close to nucleus. It helps in spindle fiber formation during the cell division. Centrosome contains centrioles.

Answer 2. Rough ER contains ribosome thus help in protein synthesis in the cytoplasm.

Answer 3. Chromosomes are best visible at the metaphase stage of the mitosis. They contain a centromere, sister and non-sister chromatids and a satellite region too.

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