32) The infoldings within the mitochondria, where the proteins of the electron t

Question

32) The infoldings within the mitochondria, where the proteins of the electron transport chain are located, are called: A alveoli B. cisternae C. cristae D matrix E. grana 33) Which organelle/structure has cis, medial, and trans components? A. chloroplast B. mitochondria C. rough ER D. peroxisome E. Golgi apparatus 34) Which of the following is present in a prokaryotic cell? A mitochondria B. cell membrane C. Golgi apparatus E. none of the above are found in a prokaryotic cell 35) The nucleolus contains regions that specialize in making A. proteins B. rRNA C. carbohydrates D. lipids E. hormones portion of the lipid bilayer at all? 36) Which of these are not embedded in the hydrophobic A. transmembrane proteins B. integral proteins C. peripheral proteins D. transmembrane proteins and integral proteins E. transmembrane proteins, integral proteins, and peripheral proteins 37) Which of the following is one of the ways that the membranes of winter wheat are able to remain fluid when it is extremely cold? A by increasing the percentage of unsaturated phospholipids in the membrane B. by increasing the percentage of saturated phospholipids in the membrane C. by increasing the number of hydrophobic proteins in the membrane D. by active transport of glucose and hydrogen E. by allowing diffusion to occur

Explanation / Answer

32. C. Mitochondria is called as power house of the cell which have two membranes an outer and an inner membrane. The inner membrane has many infoldings called as cristae that increases its surface area. The inner membrane that is studded with the proteins necessary for the electron transport chain such as the cytochrome electron shuttles.

33. E. Golgi apparatus also called as golgi complex or golgo body, which is membrane bound organelle of eukaryotic cells that is made up of series of flattened, stacked pouches called cisternae. This is responsible for transporting, modifying and packaging of proteins and lipids into vessicles. This apparatus has three main compartments cis, medial and trans layers.

34. E. Prokaryotic cell are simple single celled organisms, prokaryotic cells doesnot have nucleus and doesnot have cell membrane bound organelle.

35. B. The nucleolus is a round body located inside the nucleus of a eukaryotic cell. It is not surrounded by a membrane sits in the nucleus. The nucleolis makes ribosomal subunits from proteins and ribosomal RNA also known as rRNA.

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