A patient presents with general weakness of movement all over his body. You
Question A patient presents with general weakness of movement all over his body. You tap on his patella tendon and the leg barely moves at all. What might be his problem?a) Right motor cortex strokeb) Cerebellar strokec) Circulating antibodies that block the acetylcholine receptord) Overdose of a drug that blocks reuptake of acetylcholine from the neuromuscularjunction.e) Parietal hemineglect
22 Which of the following is INCORRECT regarding the anti-diuretic hormone (ADH; vasopressin)? Vasopressin
Question 22 Which of the following is INCORRECT regarding the anti-diuretic hormone (ADH; vasopressin)? Vasopressin A binds to target cells in thekidney B uses cyclic AMP as a secondmessenger C regulates blood osmolaritylevels D is a polypeptide hormone E is produced by cells in theanterior pituitary 14. InmmHg, what do you expect the blood pressure to be at the arteriole end of acapillary?A 0B 30 C 70 D 80 E 120 15 Large fish depend on the countercurrent flow of water across their gills relative to the blood circulation to their gills to obtain sufficient oxygen. Which of the following statements is NOT a correct part of the explanation relevant to this statement?A Fish have a doublecirculation system, so that the entire blood supply flows from the gills to theheart before being pumped to the systemic circulation B There is only 4-8 ml of O2dissolved in water when the water is in equilibrium with air at an O2 partialpressure of 160 mmHg C Water in the sea near theequator contains less dissolved O2 than that in a river in a cold climate D If the water and bloodflowed in the same direction across the gills, the maximum extraction of O2that could be achieved from the water would be about 50% E The counter current systemallows fish to extract about 80% of the oxygen from the water flowing overtheir gills 16 Negativepressure breathing A depends on the decreasedpressure in the chest cavity that occurs when the diaphragm moves downward andthe rib cage expands B occurs in most air-breathinganimals, including amphibia and mammals C is regulated by increasedsignals from the medulla oblongata to the rib muscles and diaphragm when the pHof cerebrospinal fluid increases D is regulated by detection ofdecreased O2 levels by chemoreceptors in the medulla oblongata and majorarteries E depends on the increasedvolume of the chest cavity that occurs when the diaphragm and the rib musclesrelax
6 Which of the following statements comparing the sympathetic and
Question 6 Which of the following statements comparing the sympathetic and parasympathetic divisions of the autonomic nervous system is CORRECT?A Neurons are classified onthe basis of the responses they mediate: sympathetic if they mediate ‘fight orflight’ responses and parasympathetic if they mediate ‘rest and digest’ responsesB Typical sympathetic nervoussystem response include an increase in heart rate, relaxation of airway smoothmuscle and stimulation of intestinal tract smooth muscle C Both divisions have a shortpreganglionic neuron and a long postganglionic neuron D Both divisions have apreganglionic neuron arising from the spinal cord, synapsing at the ganglionwith a postganglionic neuron to the tissue E Sympathetic neurons arisefrom the cervical and thoracic regions and parasympathetic neurons arise fromthe lumbar and sacral regions of the spinal cord 7 Which of the following statements about the human brain is INCORRECT?A Long term potentiation is a key process for storing memoriesand learning, and involves high frequency glutamate transmission B The hypothalamus is an important centre for homeostaticcontrol by hormones C It is common for different lobes of the human cerebral cortexto map the same functions, such as speech generation in both the frontal andtemporal lobes D The limbic system controls our emotions and involves severalparts of the brain, including the hippocampus, hypothalamus, thalamus andolfactory bulbs E The thalamus coordinates input from sensory neurons and outputvia motor neurons 8 Which of the followingstatements about single motor units is INCORRECT? A A single motor units consists of a motoneuron, its axon andall of the muscle fibres it innervates B Each muscle fibre is innervated by at least two motor neurons C Force is altered by the number and discharge rate of singlemotor units D The junction between the motor axon and muscle fibre is knownas the synaptic cleft or synaptic terminal E Hennemann’s size principle predicts that smaller single motorunits will be recruited first 9 Which of the following statements about cardiac muscle is INCORRECT? Cardiac muscleA cells are connected by an intercalated disc B cells may branch and connect multiple other cardiac cells C cells are striated in appearance D is found only in the heart E cells have multiple nuclei Establishing the restingmembrane potential depends on all of the following EXCEPTA delayed opening of voltage-gated K channels to allow movementof K ions out of the cell B establishing a balance between the electrical and chemicalgradients across the cell membrane C the closing of most Na and Cl- channels in the cell membrane D activation of the electrogenic pump, Na /K -ATPase E movement of K ions out of the cell via constitutively open K channels
Shown below are partial DNA sequences of genes from the bacterium Emseebeeum.
Question Shown below are partial DNA sequences of genes from the bacterium Emseebeeum. Only the nontemplate strand is shown with the transcriptional start site indicated by the bolded adenine base labeled 1. Previously you determined that these genes were expressed only under joyous conditions, and that these segments of DNA bound to RNA polymerase containing σ2501) Based on the above sequences, what is the best promoter consensus sequence (including the spacing) for RNA polymerase containing σ250? Note: as an example, the consensus sequence for σ70 is TTGACA N17 TATAAT.2)Which of the following genes listed below contains the strongest promoter?3)Which of the following genes listed below contains the weakest promoter?
Biologically, how expensive are you? The elements that make up the
Question Biologically, how expensive are you? The elements that make up the typical adult body can be purchased from chemical supply companies for about $3,000-$4,000. However, each of those elements must be chemically bonded to together to produce the complex biological molecules of life (proteins, nucleic acids, carbohydrates, lipids). Using sophisticated laboratory equipment, highly trained scientists can synthesize these complex biological molecules from basic elemental building blocks, but this costs millions of dollars!Consider the differences in worth between the elemental and biomolecular components of life. Explain the difference in terms of the characteristics of life.
In what ways have you personally witnessed the environment being negatively impacted by human activities?
Question Get Answer In what ways have you personally witnessed the environment being negatively impacted by human activities? What environmental issues do you most see discussed on national news or other media?What issues do you think are most important to address? Watch the video “Environmental Issues and Human Impact”. This video is available through the video streaming service of the MCC Library. https://www.mccneb.edu/Current-Students/Current-Students-Resources/Library.aspx Answer the following questions using the information from the video.1. What are the four spheres studied by environmental geologists?Describe the negative and positive aspects of allowing people to visit natural areas such as Carlsbad Caverns.How much of our waste comes from construction?What is zeroscaping? What environmental services are provided by intact forests? How long does it take soil to form? How does deforestation contribute to global warming?How much has the temperature of the world risen in the last 150 years?How much do scientists estimate the world temperature will increase over the next 100 years? Explain the greenhouse effect. Give examples of greenhouse gases. What are some of the consequences of global warming?How can we reduce our impact on global warming?this is everything about that homework you have the website for it please here is the link . https://www.mccneb.edu/Current-Students/Current-Students-Resources/Library.aspx
Digestive and Metabolism Lab #5 has the following objectives: Calculate BMI and estimate Basal Metabolic Rate Complete a
Digestive and Metabolism Lab #5 has the following objectives: Calculate BMI and estimate Basal Metabolic Rate Complete a dietary and activity record Identify digestive enzymes in digestion of carbohydrates, proteins and lipids Trace the pathway food travels through the digestive tract and describe processes of digestion, secretion, and absorption Note: Write answers directly on the lab worksheet or create a new Word document (or PDF). Be sure to address the 7 areas and include all questions, tables, and calculations.
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