In passive processes substances move across the

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5) In passive processes, substances move across the plasma membrane: 1. with the use of ATP. 2. up their own concentration gradient. 3. down a pressure gradient. 4. equally in all directions. A) 3 only B) 2 only C) 1, 2, 3 D) 2, 3, 4 Answer: A Topic: PLASMA MEMBRANE 6) Which of the following is/are functions of a carrier vesicle in receptor-mediated endocytosis? 9) The membrane of endoplasmic reticulum is continuous with the membrane of the _____. 12) Which of the following is not located in the nucleus? 16) Which of the following is considered a factor in aging? A) increased synthesis of protein B) viral invasion of cells C) free radical damage to protein and DNA D) decreased autoimmune response Answer: C Topic: AGING AND CELLS 6
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17) Which of the following is not a true statement about the development or treatment of a malignant tumor? 18) Cells which recognize and respond to various agents circulating in the blood (e.g. hormones, neurotransmitters) have the unique feature of… 21) One example of this process occurs during destruction of the “webbing” found between the digits of the hand and foot in early human fetal development. This process is referred to as: 22) The most significant component of the cell that allows for another cell to recognize it as “self” or “foreign” is its: A) mitochondria B) rough endoplasmic reticulum C) glycocalyx D) lysosomes Answer: C Topic: STRUCTURE OF THE MEMBRANE 24) Plasma and lymph are two kinds of interstitial fluid. Answer: FALSE Topic: PLASMA MEMBRANE 26) Active transport of molecules across cell membranes requires the use of adenosine triphosphate (ATP) as energy. Answer: TRUE Topic: PLASMA MEMBRANE 7
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27) Hormones, cholesterol, vitamins, and some viruses enter cells via the process of phagocytosis. Answer: FALSE Topic: PLASMA MEMBRANE 28) Endocytosis is the reverse of exocytosis and pinocytosis is the reverse of phagocytosis.
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