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A&P Final Exam Pool

QuestionAnswer
The band composed only of thin myofilaments. A) H-Zone B) I-Band C) Z-Line D) A-Band Answer: B
The disease in children called "rickets" is known as ________ in an adult. A) osteoporosis B) osteomyelitis C) osteonecrosis D) osteomalacia E) osteoma Answer: D
Which statement about enzymes is false? A) Enzymes raise the Activation Energy needed to start a reaction. B) Enzymes are composed mostly of proteins. C) Enzymes are Organic Catalysts. D) Enzymes may be damaged by high temperature. Answer: A
One functional unit of a skeletal muscle is: A) sarcomere. B) myofilaments. C) myofibrils D) sarcoplasmic reticulum. Answer: A
The pancreas and liver work together to maintain homeostasis through: A) negative feedback. B) neither positive nor negative feedback. C) both negative and positive feedback. D) positive feedback. Answer: A
The functions of centrioles include: A) organizing the mitotic spindle in cell division. B) providing a whiplike beating motion to move substances along cell surfaces. C) serving as the site for ribosomal RNA synthesis. D) producing ATP. Answer: A
Which of the following is not a usual result of exercise? A)in. efficiency of the circulatory system B)inc. in the # of myofibrils within the muscle cells C)inc. in the efficiency of the respiratory system D)inc. in the # of muscle cells Answer: D
The vital centers for the control of heart rate, respiration and blood pressure are located in the: A)pons. B)medulla. C)midbrain. D)cerebrum. Answer: B
In bone formation, a deficiency of growth hormone will cause: A) inadequate calcification of bone. B) decreased osteoclasts activity. C) increased osteoclasts activity. D) decreased proliferation of the epiphyseal plate cartilage. Answer: D
Atom X has seventeen protons. How many electrons are in its valence shell? A)5 B)7 C)3 D)10 Answer: 7
The numbers listed represent the first, second and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom? A) 2, 8, 8 B) 2, 8, 1 C) 2, 8 D) 2 Answer: B
Which statement is not true concerning characteristics of life? A) Reproduction occurs on both the cellular level and the organismal level. B) All body cells exhibit irritability to some extent. C) Each organ system is isolated from all other body syst Answer:C
Which of the following is a principle of the fluid mosaic model of cell membrane structure? A) Phospholipids form a bilayer that is largely impermeable to water-soluble molecules. B) Phospholipids consist of a polar head and a nonpolar tail made of thre Answer: A
The membrane lining the medullary canal is the: A) endochondrium. B) periosteum. C) perichondrium. D) intraosteum. E) endosteum. Answer: E
All of the following are structures of the limbic system except: A) hippocampus. B) cingulate gyrus. C) amygdaloid nucleus. D) caudate nucleus. Answer: D
Which of these would you not find in the cerebral cortex? A) cell bodies B) dendrites C) unmyelinated axons D) fiber tracts Answer: D
Which one of the following planes would result in sections containing both of the lungs and the heart? (Note: It could contain parts of both lungs and the heart.) 1. Coronal (=Frontal), 2. Transverse. 3. Saggital A) 1 only B) 1 & 2 C) 1, 2, & 3 D) 2 o Answer: B
When a globular protein has its hydrogen bonds broken, it becomes: A) unspecific. B) ionized. C) insoluble. D) denatured. E) dissociated. Answer: D
This occurs in the electron transport system. A) oxygen debt B) heat rigor C) lactic acid D) oxidative phosphorylation E) anaerobic respiration Answer: E
A coronal plane would divide the body: A) vertically into right and left parts. B) horizontally into superior and inferior parts. C) vertically into anterior and posterior parts. D) horizontally into ventral and dorsal parts. Answer: C
The majority of ATP synthesis occurs during: A) Krebs cycle. B) electron transport chain. C) glycolysis. D) acetyl CoA formation. Answer: B
The term pollex refers to the: A) great toe. B) calf. C) fingers. D) thumb. Answer: D
An action potential: A) is essential for impulse propagation. B) involves the influx of negative ions to depolarize the membrane. C) is initiated by potassium ion movement. D) involves impulse propagation dependent on chemically gated ion channels. Answer: A
Salts are always: A) ionic compounds. B) single covalent compounds. C) hydrogen bonded. D) double covalent compounds Answer: A
Glycolysis is the only phase: A) that occurs in the cytoplasm. B) that does not require oxygen. C) that directly yields ATP. D) all of the above E) only a and b above are correct Answer: D
In the left cerebral hemisphere we possess areas functioning in speech. The area involved in comprehension of the written and spoken language is called: A) Broca's area. B) Wernicke's area C) Gnostic area. D) Gustatory area. Answer: B
Mitosis is: A) formation of sex cells. B) nucleus replication. C) to create diversity in genetic potential. D) division of a cell. Answer: B
A rapid repetitive series of threshold stimuli leading to a single, fused, sustained contraction is: A)summation of stimuli. B)treppe. C)tetanus. D)sumation of contraction. Answer: D
Strong muscle contractions are controlled by: A) increasing the voltage up to the maximum voltage. B) increasing the voltage above the maximum voltage. C) increasing the voltage above the threshold. D) recruiting small and medium muscle fibers. Answer: A
A neuronal circuit that concentrates or directs a large number of incoming impulses to a rather small number of neurons is called a(n): A) diverging circuit. B) oscillating circuit. C) converging circuit. D) parallel circuit. Answer: C
The role of acetylcholinesterase is to: A) act as a transmitting agent. B) amplify or enhance the effect of ACh. C) destroy ACh a brief period after its release by the axonal endings. D) stimulate the production of serotonin. Answer: C
The ventricles that lie within the cerebral hemispheres are the: A) third and fourth ventricles. B) lateral apertures. C) foramina. D) lateral ventricles. Answer: D
One of the functional characteristics of life is irritability. This refers to: A)the nervous system causing all living things to sometimes experience anger. B)sensing changes in the environment and then reacting or responding to them. C)the necessi Answer: B
Which of the following statements is true concerning feedback mechanisms? B) Blood glucose levels are regulated by positive feedback mechanisms. C) Negative feedback mechanisms tend to increase the original stimulus. D) Negative feedback mechanisms wor Answer: D
Smooth muscle is significantly different from striated muscle in several ways. Which of the following is true? A) Smooth muscle has transverse tubules. B) Smooth muscle is larger and more powerful than striated muscle. C)Smooth muscle shortens and stre Answer: C
A contraction in which the muscle changes in length with the same tension applied to it is called: A) muscle twitch. B) isotonic contraction. C) isometric contraction. Answer: B
An individual accidentally transected the spinal cord between T1 and L2. This would result in: A) paraplegia. B) hemiplegia. C) quadriplegia. D) spinal shock only. Answer: A
Smooth muscles that act like skeletal muscles but are controlled by autonomic nerves and hormones are: A) single-unit muscles. B) white muscles. C) red muscles. D) multiunit muscles. Answer:D
The universal loss of bone mass seen in the skeleton, which begins about the age of 40: A) is absolutely uniform throughout the skeleton. B) reflects an imbalance in the bone remodeling process. C) is greater in African Americans than in Northern Europ Answer: B
________ is a suspension. A) Blood B) Rubbing alcohol C) Cytoplasm D) Seawater Answer: A
When acetylcholine diffuses across the synaptic cleft and binds to receptors on the folded sarcolemma it initially causes _______ channels to open in the sarcolemma. A) voltage-gated Ca++ B) chemically-gated Na+ C) chemicaly-gated K+ D) voltage-gated Answer: B
Select the correct statement about synapses. A) Cells with interconnected cytoplasm are chemically coupled. of being electrically coupled. C) Neurotransmitter receptors are located on the axons of cells. D) The synaptic cleft prevents an impulse from Answer: D
Most muscles contain: A) a mixture of fiber types. B) a predominance of slow oxidative fibers. C) muscle fibers of the same type. D) a predominance of fast oxidative fibers. Answer: A
The subarachnoid space lies between what two layers of meninges? A) arachnoid and epidura B) arachnoid and pia C) arachnoid and dura D) dura and epidura Answer: B
Which one of the following statements is correct regarding diffusion? A) The rate of diffusion is independent of temperature. B) The greater the concentration gradient, the faster the rate of diffusion. C) Molecular weight of a substance does not affec Answer: B
Spastic paralysis suggests involvement of the: A) upper motor neurons. B) lower motor neurons. C) spinal nerve roots. D) neuromotor junction. Answer: A
Chromosomal centromeres split and chromosomes migrate to opposite ends of the cell in which of the following? A) telophase B) metaphase C) prophase D) anaphase Answer: D
Which of the following would not be functional characteristics of life? A) movement B) maintenance of boundaries C) decay D) responsiveness to external stimuli Answer: C
Which statement is the most correct regarding transcription/translation? A) The nucleotide sequence in a tRNA anticodon is an exact copy of the DNA triplet that coded for it except that uracil is substituted for thymine. B) The nucleotide sequence in a Answer: A
The band formed due to the overlapping of thick and thin myofilaments. A) H-Zone B) I-Band C) Z-Line D) A-Band Answer: B
Created by: jenkasick
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