In an animal cell. dna may be found

B) only in the nucleus and mitochondria 12) In an animal cell DNA may be found D) in the nucleus, mitochondria, and rough ER A) only in the nucleus. 130 Whi ype of organelle or structure is primarily in the synthesis of oils phospholipids and steroids? involved reticulum A) ribosome smooth endoplasmic C mitochondrion 13) which of the following produces and modifies polysaccharides that will be secreted B) mitochondrion Golgi apparatus 15) Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular components in animal cells, which of the following organelles contains these hydrolytic enzymes? C) centrioles A) mitochondria B) central vacuoles 16) One of the key innovations in the evolution of eukaryotes from a prokaryotic ancestor is the endomembrane system. Which eukaryotic organelles or features might have evolved as a part of, or as an elaboration of the endomembrane system? D) nuclear envelope A) chloroplasts 17) Which of the following correctly describes the pathway taken by a protein destined for secretion from an animal A) Golgi rough ER transport vesiele plasma membrane rough ER transport vesicle lysosome transport vesicle plasma membrane C) rough ER transport vesicle Golgi transport vesicle plasma membrane plasma membrane ansport vesicle Golgi transport vesicle rough ER A) gap junctions. B) desmosomes. tight junctions. D) intermediate filaments, 19) The fluid mosaic model of the membrane proposed that membranes A) consist of a single layer of phospholipids and proteins. B) consist of a phospholipid bilayer composed of a variety of fatty acids. D) consist of a phospholipid bilayer between two layers of hydrophilic proteins. 20) A primary function of cholesterol in the plasma membranes of some animals is to A) facilitate the removal of hydrogen atoms from saturated phospholipids. B) enable the membrane to stay fluid more easily when the temperature drops. D) facilitate cell-cell interactions by binding to receptors on nei 21) The primary structural components of the cell membrane are A) phospholipids and proteins. B glycoproteins and cholesterol. C) cholesterol and proteins. D) phospholipids and cellulose. 22) What kinds of molecules pass through a cell membrane most easily? A) large p C) large hydrophobic D) small hydrophobic Help with all please


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