Robbins Basic Pathology 10th Edition Kymar Abbas Test BANK

Robbins Basic Pathology 10th Edition Kymar Abbas Test Bank
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Chapter I1. IThe ICell Ias Ia IUnit Iof IHealth Iand IDisease
1 The nucleus I , which is essential for function and I I I I I I


survival of the cell.
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A) is the site of protein synthesis I I I I I



B) contains the genetic code I I I



C) transforms cellular energy I I



D) initiates aerobic metabolism I I




2 Although energy is not made in mitochondria, they are known
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as the power plants of the cell because they:
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A) contain RNAfor protein synthesis. I I I I



B) utilize glycolysis for oxidative energy. I I I I



C) extract energy from organic compounds.
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D) store calcium bonds for muscle contractions.
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3 Although the basic structure of the cell plasma membrane is
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formed by a lipid bilayer, most of the specific membrane
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functions are carried out by:
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A) bound and transmembrane proteins. I I I



B) complex, long carbohydrate chains. I I I



C) surface antigens and hormone receptors. I I I I



D) a gating system of selective ion channels.
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4 To effectively relay signals, cell-to-cell communication
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utilizes chemical messenger systems that:
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A) displace surface receptor proteins. I I I



B) accumulate within cell gap junctions. I I I I



C) bind to contractile microfilaments.
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D) release secretions into extracellular fluid.
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,5 Aerobic metabolism, also known as oxidative metabolism,
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provides energy by:
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A) removing the phosphate bonds from ATP. I I I I I



B) combining hydrogen and oxygen to form I I I I I


water. I



C) activating pyruvate stored in the cytoplasm. I I I I I



D) breaking down glucose to form lactic acid.
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6 Exocytosis, the reverse of endocytosis, is important in
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I into the extracellular fluid.
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A) Engulfing and ingesting fluid and proteins for I I I I I I


transport I



B) Killing, degrading, and dissolving harmful I I I I


microorganisms I



C) Removing cellular debris and releasing I I I I


synthesized substances
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D) Destruction of particles by lysosomal enzymes I I I I I


for secretion
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7 The process responsible for generating and conducting
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membrane potentials is:
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A) diffusion of current-carrying ions. I I I



B) millivoltage of electrical potential. I I I




C) polarization of charged particles. I I I



D) ion channel neurotransmission.
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8 Epithelial tissues are classified according to the shape of the
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cells and the number of layers. Which of the following is a
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correctly matched description and type of epithelial tissue?
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A) Simple epithelium: cells in contact with
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intercellular matrix; some do not extend to
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surface
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,B) Stratified epithelium: single layer of cells; all
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cells rest on basement membrane
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C) Glandular epithelium: arise from surface I I I I


epithelia and underlying connective tissue
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D) Pseudostratified epithelium: multiple layers of I I I I


cells; deepest layer rests on basement
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membrane
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9 Connective tissue contains fibroblasts that are responsible for:
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A) providing a fibrous framework for capillaries. I I I I I



B) synthesis of collagen, elastin, and reticular I I I I I


fibers.
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C) forming tendons and the fascia that covers
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muscles.
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D) filling spaces between tissues to keep organs in
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place.
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10 Although all muscle tissue cells have some similarities,
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smooth muscle (also known as involuntary muscle) differs
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by:
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A) having dense bodies attached to actin I I I I I


filaments. I



B) containing sarcomeres between Z lines and M I I I I I I


bands.
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C) having rapid contractions and abundant cross-
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striations.
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D) contracting in response to increased I I I I


intracellular calcium.
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11 Which of the following aspects of the function of the nucleusis
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performed by ribosomal RNA (rRNA)?
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A) Copying and carrying DNA instructions for I I I I I


protein synthesis I I

, B) Carrying amino acids to the site of protein
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synthesis
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C) Providing the site where protein synthesis I I I I I


occurs
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D) Regulating and controlling protein synthesis I I I I




12 Breakdown and removal of foreign substances and worn-out
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cell parts are performed by which of the following
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organelles?
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A) Lysosomes
B) Golgi apparatus I



C) Ribosomes
D) Endoplasmic reticulum (ER) I I




13 Impairment in the function of peroxisomes would result in:
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A) inadequate sites for protein synthesis. I I I I



B) an inability to transport cellular products
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across the cell membrane.
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C) insufficient energy production within a cell. I I I I I



D) accumulation of free radicals in the cytoplasm. I I I I I I




14 After several months of trying to conceive, a couple is
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undergoing fertility testing. Semen analysis indicates that the
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mans sperm have decreased motility, a finding that is thought
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to underlie the couples inability to become pregnant. Which of
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the following cellular components may be defective withinthe
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mans sperm?
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A) Ribosomes
B) Microtubules
C) Mitochondria
D) Microfilaments