Health Care > EXAM > NLN-PAX Science| 450 QUESTIONS| ANSWERS ALL CORRECT (All)
Cell Correct Answer: the smallest living unit and the basic unit of function and structure for all living things. Nucleus Correct Answer: contains the genetic information, or DNA, and controls th... e activities of the cell. Plasma (cell) membrane Correct Answer: separates the contents of the cell from the surrounding fluid (interstitial fluid) Semipermeable membrane Correct Answer: refers to the selective nature of the plasma membrane. It contains pores and channels that allow only particles of the right size or the right chemical nature to pass through. Interstitial fluide Correct Answer: contains substances such as amino acids, sugars, fatty acids, hormones, neurotransmitters, and salts. Cytoplasm Correct Answer: is the fluid matrix found between the plasma membrane and the nucleus that acts as scaffolding for the organelles. Organelles Correct Answer: (little organs) are specialized units in the cell that per form certain functions. Mitochondria Correct Answer: are the locations for cellular respiration, that is, the conversion of food to energy at the cellular level. The site of energy production and of most of its ATP. ATP (adenosine triphosphate) Correct Answer: the chemical the cell uses to store and transfer energy within itself. Ribosomes Correct Answer: are the sites of protein synthesis in the cell Endoplasmic reticulum (ER) Correct Answer: Ribosomes are attached. Serves as a means for transport within the cell and is made up of many channels. Rough endoplasmic reticulum named for the fact that it has ribosomes on its surface, serves to store and deliver the proteins made by the attached ribosomes. Smooth ER is free of ribosomes it performs varying functions in different cells, including the storage of enzymes and minerals and the folding of proteins, among other things. It is thought to be involved in the detoxification of chemicals and the metabolism of fats. Golgi complex Correct Answer: modifies and packages proteins destined for use in the cell or for export from the cell. [Show More]
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