A&P EXAM 1 THE CELL BMCC BIO 425 Questions + Answers Graded A+

35. What is the function of the centrioles? - to help with cell division Describe 3 anatomical features of mitochondria. - 1) matrix 2)ribosomes 3) cristae Describe 3 anatomical features of the nucleus. - 1) Nucleus: sphere structure 2) nuclear envelope: separates the nucleus from the cytoplasm 3)Pores: controls movement between the nucleus & cytoplasm Describe a centriole. - Help organize chromosomes during cell division Describe the plasma membrane of a eukaryotic cell. - the outer boundary of the cell Draw a cell, with all its organelles and label them. - Explain what is (are) the function (s) of the cellular vesicles? - Vesicles are used to transport materials within a cell between the RER, Golgi and plasma membrane. - Cells manufacture molecules to be secreted outside of the cell, which are sometimes a complex combination of proteins, lipids and carbohydrates. Explain what is (are) the function (s) of the endoplasmic reticulum? - A network of channels running through the cytoplasm of a cell that serves in intracellular transportation, support, storage, synthesis, and packaging of molecules. Portions of ER where ribosomes are attached to the outer surface are called rough ER; portions that have no ribosomes are called smooth ER. Explain what is (are) the function (s) of the Golgi complex? - 1) Synthesis of complex polysaccharides2) Modification of proteins and lipids 3) Transport of proteins 4) Sorting of proteins Explain what is (are) the function (s) of the lysosomes? - digest food, clean up and recycle Explain what is (are) the function (s) of the peroxisomes? - 1) Lipid metabolism 2) breaks down H202 3) Neutralize free radicals Explain what is (are) the function (s) of the ribosomes? - The sites of protein synthesis. Explain what is (are) the function(s) of the nucleus? - Ribosome synthesis & Stores DNA Explain what is the cytoskeleton? - Internal protein framework that provides support and structure for the cell Explain what is the function of the microfilaments? - cell mobility Explain what is the function of the microtubules? - maintaining cell structure. (railroad tracks) Explain what is the function of the mitochondria? - site of ATP synthesis; powerhouse of the cell. Give a description of the cytosol? - Intracellular fluid, Knowing their function, what cellular organelle is in charge of disassembling old and non-functional cellular parts? - Lysosomes List 3 anatomical features of the cellular vesicles. - 1) moves molecules in the cell2) composed of lipids 3) transports materials List 3 anatomical features of the endoplasmic reticulum. - Smooth ER Rough ER *has robosomes List 3 anatomical features of the Golgi complex. - Smooth flattened, disk-like membrane-bound cisternae List 3 anatomical features of the lysosomes. - membrane-bound organelles that contain enzymes List 3 anatomical features of the peroxisomes. - 1) contain many enzymes 2) crystalloid core 3) present in all tissue