Life Sciences
Pre-Test Questions
Course Introduction
Life Sciences is an interdisciplinary field that explores the structure, function, growth, origin, evolution, and distribution of living organisms. This course covers fundamental concepts in biology, including cell theory, genetics, evolution, ecology, and physiology. Students will learn about the diversity of life forms, the molecular mechanisms underlying biological processes, and the ways in which organisms interact with their environment. Emphasis is placed on the application of scientific methods, critical thinking, and recent advances in biotechnology and biomedical research, preparing students for further study or careers in healthcare, research, and related fields.
Recommended Textbook
Human Physiology 13th Edition by Stuart Fox
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19 Chapters
2791 Verified Questions
2791 Flashcards
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Chapter 1: The Study of Body Function
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118 Verified Questions
118 Flashcards
Source URL: https://quizplus.com/quiz/58843
Sample Questions
Q1) All skeletal muscles cause movement of the skeleton.
A)True
B)False
Answer: False
Q2) Which of the following is found primarily within the hypodermal layer of the skin?
A)adipose tissue
B)nervous tissue
C)blood vessels
D)hair cells
Answer: A
Q3) The study of how disease or injury alters physiological processes is termed A)comparative physiology.
B)the scientific method.
C)pathophysiology.
D)anatomy.
Answer: C
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Page 3
Chapter 2: Chemical Composition of the Body
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116 Verified Questions
116 Flashcards
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Sample Questions
Q1) The _______________ electrons are the outermost electrons of an atom.
A)kernel
B)valence
C)atomic
D)anion
Answer: B
Q2) Which of the following subatomic particles have negligible mass?
A)electrons
B)neutrons
C)protons
D)Both neutrons and protons.
Answer: A
Q3) Phospholipid molecules will form aggregates called ______ when placed in water.
A)surfactants
B)ketone bodies
C)prostaglandins
D)micelles
Answer: D
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Chapter 3: Cell Structure and Genetic Control
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147 Verified Questions
147 Flashcards
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Sample Questions
Q1) Receptor-mediated endocytosis would allow cells to selectively remove molecules from the extracellular fluid.
A)True
B)False
Answer: True
Q2) Crossing over occurs during
A)anaphase I of meiosis.
B)metaphase of mitosis.
C)prophase I of meiosis.
D)metaphase II of meiosis.
Answer: C
Q3) In the nucleus of a diploid cell,the amount of cytosine would equal the amount of A)adenine.
B)thymine.
C)uracil.
D)guanine.
Answer: D
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Page 5
Chapter 5: Cell Respiration and Metabolism
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106 Verified Questions
106 Flashcards
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Sample Questions
Q1) What structures allow H<sup>+</sup> to diffuse back across the inner mitochondrial membrane to the matrix?
A)cytochromes
B)coenzyme Q
C)respiratory assemblies
D)NADH
Q2) Anabolic reactions do NOT
A)utilize energy.
B)synthesize molecules within cells.
C)store energy.
D)release energy.
Q3) In newborns,_________ occurs in brown fat.
A)lipogenesis
B)thermogenesis
C)gluconeogenesis
D)biogenesis
Q4) The electron transport chain system functions to create a proton gradient across the outer mitochondrial membrane.
A)True
B)False
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Chapter 6: Interactions Between Cells and the Extracellular Environment
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123 Verified Questions
123 Flashcards
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Sample Questions
Q1) Epithelial cells have a polarity dealing with transport.
A)True
B)False
Q2) Simple diffusion is the net diffusion of a solvent.
A)True
B)False
Q3) Which of the following is a function of the steep Na<sup>+</sup>/K<sup>+</sup> gradient across the cell membrane?
A)provides energy for coupled transport
B)creates electrochemical impulses
C)maintains osmotic pressure
D)All apply.
Q4) The resting membrane potential is closest to the equilibrium potential for A)sodium ions.
B)chloride ions.
C)calcium ions.
D)potassium ions.
Q5) The rate of diffusion increases as the concentration gradient increases. A)True
B)False
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Chapter 7: The Nervous System: Neurons and Synapses
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190 Verified Questions
190 Flashcards
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Sample Questions
Q1) Which of the following is NOT true of axonal transport?
A)uses molecular motors
B)can transport anterograde or retrograde
C)has one fast and two slow components
D)is a passive process
Q2) Atropine is an antagonist to nicotine.
A)True
B)False
Q3) Neurotransmitter release would be inhibited by
A)stimulating repolarization of the axon terminal.
B)blocking Ca<sup>2+</sup> influx in the axon terminal.
C)blocking repolarization of the axon terminal.
D)stimulating protein kinase activity.
Q4) The period of time when Na<sup>+</sup> channels are recovering from their inactive state and K<sup>+</sup> channels are still open is the A)repolarization.
B)absolute refractory period.
C)relative refractory period.
D)Repolarization and relative refractory period are correct.
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Chapter 8: The Central Nervous System
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160 Verified Questions
160 Flashcards
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Sample Questions
Q1) The ___________________ is the dorsal diencephalon,containing the choroid plexus and the pineal gland.
A)epithalamus
B)hypothalamus
C)thalamus
D)third ventricle
Q2) What is the purpose of the motor circuit?
A)allows intended movements to occur and inhibits unwanted movements
B)permits REM sleep
C)activates the RAS
D)inhibits language comprehension
Q3) Damage to the temporal lobe of the cerebrum would limit
A)voluntary skeletal muscle contraction.
B)integration of cerebral activities.
C)hearing.
D)vision.
Q4) Damage to the white matter of the brain would prevent transmission of information between nuclei.
A)True
B)False
Page 9
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Chapter 9: The Autonomic Nervous System
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105 Verified Questions
105 Flashcards
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Sample Questions
Q1) ____________ fibers have relatively slower nerve conduction because they are thin and unmyelinated.
A)Preganglionic autonomic sympathetic
B)Postganglionic autonomic sympathetic
C)Preganglionic somatic
D)Postganglionic somatic
Q2) From where do parasympathetic preganglionic neurons originate?
A)brainstem
B)thoracic and lumbar region of the spinal cord
C)sacral region of the spinal cord
D)brainstem and sacral region of the spinal cord
Q3) Which of the following organs HAS dual ANS innervation?
A)arrector pili muscles
B)adrenal medulla
C)iris
D)most blood vessels
Q4) Postganglionic sympathetic neurons arise from the thoracic and lumbar regions of the spinal cord.
A)True
B)False
10
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Chapter 10: Sensory Physiology
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180 Verified Questions
180 Flashcards
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Sample Questions
Q1) The capsaicin receptor produces both heat and pain sensations by allowing Ca<sup>2+</sup> and Na<sup>+</sup> to diffuse into the neuron through transient receptor potential channels.
A)True
B)False
Q2) Myopia is corrected with concave lenses.
A)True
B)False
Q3) Each olfactory glomerulus receives input from several types of olfactory receptors.
A)True
B)False
Q4) Which type of receptor responds to physical deformation of its cell membrane?
A)chemoreceptors
B)photoreceptors
C)thermoreceptors
D)mechanoreceptors
Q5) Taste cells are modified neurons.
A)True
B)False
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Chapter 11: Endocrine Glands: Secretion and Action of Hormones
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157 Verified Questions
157 Flashcards
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Sample Questions
Q1) A tumor of the ______________ referred to as a pheochromocytoma.
A)adrenal cortex
B)adrenal medulla
C)thyroid gland
D)pineal gland
Q2) Molecules that are produced within one tissue but regulate a different tissue of the same organ are called
A)autocrine regulators.
B)endocrine regulators.
C)paracrine regulators.
D)exocrine regulators.
Q3) The posterior pituitary gland produces two hormones.
A)True
B)False
Q4) _____________ inhibits COX3 in the brain which results in pain and fever reduction.
A)Acetaminophen (Tylenol)
B)Aspirin
C)Ibuprofen (Motrin)
D)All apply.
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Chapter 12: Muscle: Mechanisms of Contraction and Neural Control
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149 Verified Questions
149 Flashcards
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Sample Questions
Q1) Smooth muscle contraction requires the actions of myosin light chain kinase.
A)True
B)False
Q2) The light band of a skeletal muscle is known as the
A)A band.
B)Z disc.
C)I band.
D)H banD.
Q3) Muscle fatigue
A)occurs when muscles are only partially able to contract.
B)occurs when muscle cell glycogen is depleted.
C)occurs when muscle cell pH increases.
D)occurs due to decreased extracellular K<sup>+</sup>.
Q4) Which of the following is NOT true of fast glycolytic/Type IIX white muscle fibers?
A)high glycogen content
B)few capillaries
C)low oxidative capacity
D)aerobic
Page 13
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Chapter 13: Blood,heart and Circulation
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157 Verified Questions
157 Flashcards
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Sample Questions
Q1) The heart spend more time in diastole than systole.
A)True
B)False
Q2) Valves are said to be _______ when they do not close properly and blood leaks through them.
A)stenotic
B)weak
C)incompetent
D)flappy
Q3) Bipolar limb lead three uses the
A)left and right arms.
B)left arm and left leg.
C)right arm and left leg.
D)left arm and right leg.
Q4) Damage to tissues stimulates the activation of the ______________ blood clotting pathway.
A)complement
B)hemophilic
C)intrinsic
D)extrinsic
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Chapter 14: Cardiac Output, blood Flow, and Blood Pressure
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150 Verified Questions
150 Flashcards
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Sample Questions
Q1) Increased blood flow resistance is caused by
A)increased blood vessel length.
B)decreased blood viscosity.
C)vasodilation.
D)increased blood pressure.
Q2) The mean arterial pressure of a person with a blood pressure of 128/68 would be A)20.
B)60.
C)68.
D)88.
Q3) During moderate exercise cerebral blood flow
A)increases slightly.
B)decreases.
C)remains unchanged.
D)increases greatly.
Q4) Nitric oxide (NO)causes
A)vasoconstriction.
B)vasodilation.
C)no effect.
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Chapter 15: The Immune System
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137 Verified Questions
137 Flashcards
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Sample Questions
Q1) Inhibiting proteins C2-C4 would block the activation of A)interferon.
B)complement.
C)specific immunity.
D)antibodies.
Q2) Antigens are used to induce a passive immune response.
A)True
B)False
Q3) _____________ tissues serve as a barrier to microbial infection.
A)Epithelial
B)Muscular
C)Nervous
D)Connective
Q4) Sertoli cells in the testicular tubes produce _____ that protects the sperm from immune system destruction.
A)FAS
B)MHCs
C)antibodies
D)FAS ligands
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Chapter 16: Respiratory Physiology
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164 Verified Questions
164 Flashcards
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Sample Questions
Q1) Vital capacity is reduced in pulmonary restrictive disorders.
A)True
B)False
Q2) A family of hemoglobin diseases found primarily in people of Mediterranean ancestry is A)thalassemiA.
B)sickle-cell anemia.
C)myoglobinemia.
D)leukemia.
Q3) An atopic allergic asthmatic would have A)activation of helper T lynphocytes.
B)production of IgE.
C)pulmonary eosinphilia.
D)All of the choices are correct.
Q4) Intrapulmonary pressure increases as the diaphragm contracts.
A)True
B)False
Q5) A lower affinity for oxygen will decrease oxygen unloading to tissues. A)True
B)False
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Chapter 17: Physiology of the Kidneys
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152 Verified Questions
152 Flashcards
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Sample Questions
Q1) Glomerulonephritis may result from destruction of the glomerular capillary basement membrane.
A)True
B)False
Q2) Diuresis is stimulated by atrial natriuretic peptide.
A)True
B)False
Q3) Decreased glomerular filtration rate would
A)increase plasma protein clearance rate.
B)increase plasma urea clearance rate.
C)decrease plasma creatinine clearance rate.
D)decrease plasma glucose clearance rate.
Q4) Depletion of extracellular K<sup>+</sup> may induce
A)metabolic acidosis.
B)metabolic alkalosis.
C)hyperventilation.
D)None of the choices are correct.
Q5) Blood pressure is regulated through the actions of the kidneys.
A)True
B)False
18
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Chapter 18: The Digestive System
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172 Verified Questions
172 Flashcards
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Sample Questions
Q1) Which of the following is NOT produced by the liver?
A)hydroxylated steroid hormones
B)uric acid
C)digestive enzymes
D)bilirubin
Q2) Damage to which of the following nerves would reduce GI secretions?
A)glossopharyngeal nerve
B)hypoglossal nerve
C)vagus nerve
D)phrenic nerve
Q3) The liver will detoxify ammonia by converting it into A)uric acid.
B)ammonium ions.
C)urea.
D)amino acids.
Q4) The combination of chewed food and saliva is called A)chyme.
B)a bolus.
C)pylorus.
D)hiatal.
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Chapter 19: Regulation and Metabolism
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138 Verified Questions
138 Flashcards
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Sample Questions
Q1) A tumor suppressing the activity of which brain area could induce obesity?
A)ventromedial hypothalamus
B)lateral hypothalamus
C)dorsomedial hypothalamus
D)anterior hypothalamus
Q2) Ghrelin is postulated to be important as a satiety factor.
A)True
B)False
Q3) The thyroid gland secretes all of the following EXCEPT A)thyroxin.
B)triiodothyronine.
C)calcitonin.
D)parathyroid hormone.
Q4) A free radical has
A)paired electrons.
B)unpaired electrons.
C)unbonded electrons.
D)bonded electrons.
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Page 20
Chapter 20: Reproduction
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164 Verified Questions
164 Flashcards
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Sample Questions
Q1) What process occurs as the zygote travels towards the uterus in the fallopian tubes?
A)cleavage
B)fertilization
C)capacitation
D)polyspermy
Q2) The possibility that nuclear transplantation from one cell to another could produce stem cells is referred to as
A)totipotent cloning.
B)reproductive cloning.
C)therapeutic cloning.
D)multipotent cloning.
Q3) Damage to the Sertoli cells would result in the production of antibodies against sperm cells.
A)True
B)False
Q4) The secretion of gonadotropins (FSH and LH)will ___________ during menopause.
A)increase
B)decrease
C)remain the same
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