Introduction to Biology II

Anatomy and Physiology I

Anatomy and Physiology

Statistics

Calculus I

Ethics Governance and Accountability

Quiz_7.pdf.pdf-What change in a neuron is

1) Which of the following is unique to animals? A) the structural carbohydrate, chitin B) nervous system signal conduction and muscular movement C) heterotrophy D) flagellated gametes 2) Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that most animals derive their nutrition by _____. A) preying on animals B) ingesting it C) consuming living, rather than dead, prey D) using enzymes to digest their food 3) Which of the following would you classify as something other than an animal? A) sponges B) coral C) jellyfish D) choanoflagellates 4) Which of the following is the LEAST likely cause of Cambrian explosion? A) New predator-prey relationships B) A rise in atmospheric oxygen C) Viral infection D) The evolution of the Hox gene complex 5) Which tissue type, or organ, is NOT correctly matched with its germ layer tissue? A) nervous — mesoderm B) muscular — mesoderm C) stomach — endoderm D) skin — ectoderm 6) An organism that exhibits cephalization probably also _____. A) is bilaterally symmetrical B) has a coelom C) is segmented D) is diploblastic 7) Suppose a researcher for a pest-control company developed a chemical that inhibited the development of an embryonic mosquito's endodermal cells. Which of the following would be a likely mechanism by which this pesticide works? A) The mosquito would develop a weakened exoskeleton that would make it vulnerable to trauma. B) The mosquito would have trouble digesting food, due to impaired gut function. C) The mosquito would have trouble with respiration and circulation, due to impaired muscle function. D) The mosquito wouldn't be affected at all 8) As the size of some animals has evolved to greater sizes, the effectiveness of their adaptations that promote exchanges with the environment have also increased. For example, in many larger organisms, evolution has favored lungs and a digestive tract with _____. A) more branching or folds B) increased thickness C) larger cells D) decreased blood supply 9) Which of the following is NOT considered an animal body plan? A) a complete digestive tract B) segmentation C) skin with hair D) cephalization 10) Of the following choices, the epithelium with the shortest diffusion distance is _____. A) simple squamous epithelium B) simple columnar epithelium C) pseudostratified ciliated columnar epithelium D) stratified squamous epithelium 11) Most of the exchange surfaces of multicellular animals are lined with _____. A) connective tissue B) smooth muscle cells C) neural tissue D) epithelial tissue 12) Connective tissues typically have _____. A) little space between the membranes of adjacent cells B) the ability to transmit electrochemical impulses C) the ability to shorten upon stimulation D) relatively few cells and a large amount of extracellular matrix 13) Which of the following epithelial tissue is specialized in absorption? A) simple cuboidal B ) simple columnar C) stratified squamous D) simple squamous 14) Cardiac muscle cells are both _____. A) striated and interconnected by intercalated disks B) smooth and under voluntary control C) striated and under voluntary control D) smooth and under involuntary control 15) The type of muscle tissue surrounding the intestines and blood vessels is _____.

BIO | 202 | Introduction to Biology II | homework | 1) Which of the following is u

Digestive_online_quiz.docx-Digestive online quiz The __________ is

In-Class Acvity 2.3 MATH111 1. Find Mean Median and Mode for the following data: Data set: The number of beds in a sample of 24 hospitals 149 167 162 127 130 180 160 167 221 145 137 194 207 150 254 262 Median: 175.75 Mode: 167 2. Final Grade The scores and their percents of the final grade for a statistics student are given. What is the student’s weighted mean score? Items Score, x Weight, w xw x = ∑ xw ∑w Homework 85 0.50 85(0.50)=42.5 X=127.25 =87.76 1.45 Quizzes 80 0.35 80(0.35)=28 Projects 100 0.20 100(0.20)=20 Speech 90 0.15 90(0.15)=13.5 Final Exam 93 0.25 93(0.25)=23.25 ∑w = 1.45 ∑xw = 127.25 In-Class Acvity 2.3 MATH111 3. Account Balance For the month of April, a checking account has a balance of $523 for 24 days, $2415 for 2 days, and $250 for 4 days. What is the account’s mean daily balance for April? Mean= 8722 4. Finding the Mean of Grouped Data: The highway mileage (in miles per gallon) for 30 small cars Class Midpoint, x f xf x = ∑ xf n 29-33 11 45.5 226.7 =4.534 50 34-38 12 53 39-43 2 60.2 44-48 5 68 n = 30 ∑ xf = 226.7

MATH | 111 | Statistics | assessment | In-Class Acvity 2.3 MATH111 1

Item 1 Part A The hypothalamus is the area where afferent impulses from all senses and all parts of the body are sorted out and then relayed to the appropriate area of the sensory cortex. True False Submit My Answers Give Up Correct Afferent impulses from all senses and all parts of the body converge on the thalamus (not the hypothalamus) and synapse with at least one of its nuclei. The thalamus--which sorts out and "edits" these afferent signals before relaying them to the appropriate cortical areas--is considered to be the gateway to the cerebral cortex. B Item 2 Part A Which of the following is true of the cerebral hemispheres of the human brain? Nearly the entire surface of the cerebral hemispheres is marked by elevated ridges called sulci. The longitudinal fissure separates the cerebral hemispheres from the cerebellum. Nearly the entire surface of the cerebral hemispheres is marked by shallow grooves called gyri. The cerebral hemispheres account for about 83% of total brain mass. Submit My Answers Give Up Correct The cerebral hemispheres, which form the superior part of the brain, account for about 83% of total brain mass. D Item 3 Part A Which of the following describes the nerve fibers indicated by the letter A? first-order sensory neurons second-order sensory neurons third-order sensory neurons Submit My Answers Give Up Correct First-order sensory neurons transmit sensory information from receptors to the spinal cord. A Item 4 Part A During meningitis, which of the following is the most likely to be a direct source of pathogens that may spread to the brain? pia mater arachnoid mater dura mater arachnoid villi Submit My Answers Give Up Correct The pia mater is meningeal layer closest to the brain. A Item 5 Part A What is the designation of the area at D? primary visual cortex multimodal association area visual association area primary olfactory cortex Submit My Answers Give Up Correct The primary visual cortex receives sensory input from the eye via the optic nerves, thalamus, and optic radiations. A Item 6 Item 7 Part A Where are the cell bodies of the sensory neurons at A located? in the dorsal root ganglion in the medulla oblongata in the posterior horn of the spinal cord in the thalamus Submit My Answers Give Up Correct All sensory neurons, including those of the autonomic nervous system, are found in the dorsal root ganglion. A Item 8 Part A Which part of the brain is the "executive suite" that controls almost all brain activity? cerebellum cerebral cortex diencephalon brain stem Submit My Answers Give Up Correct The cerebral cortex is the "executive suite" of the nervous system, where most of our higher-level decision making occurs. It enables us to be aware of ourselves and our sensations, communicate, remember, understand, and initiate voluntary movements. B Item 9 Part A In general, a primary sensory cortex breaks down sensory input into component parts, while an association cortex makes sense of sensory inputs. True False Submit My Answers Give Up Correct

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