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an important buffer system in the human body involves carbon dioxide and bicarbonate ions as shown. if a person gets excited and exhales large amounts of CO2 how will his or her body's pH be affected? also describe why you think it is important to know pH levels for body function?

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Nestor Rutherford
Nestor RutherfordLv2
28 Sep 2019

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Related questions

Complete Question Text:

1. A patient comes to a doctor complaining of muscle cramping.As part of her examination, the doctor notes that the patient has aslow pulse. Additionally, in the past year the patient has brokenher hand and her arm in seemingly minor falls. What variable do youpredict the patient is having trouble regulating?

Fat
K+
ATP
Ca2+

2. Allen's rule is a biological rule that states that the limbsof warm blooded animals that live in colder climates are differentthan the limbs of the same species of animals in warmer climates.In what way do you expect them to be different and why?

Shorter because a low surface area to volume ratio is best formaintaining heat
Longer because a high surface area to volume ratio is best formaintaining heat. ????
Longer because a low surface area to volume ratio is best formaintaining heat
Shorter because a high surface area to volume ratio is best formaintaining heat.

3. Pepsin is a digestive enzyme. It is made in an inactive form,pepsinogen, which is activated by the acidity of the stomach toself-cleave (cut itself) into a formed called the cleaved molecule.This cleaved molecule is active pepsin, which goes on to cleavemore pepsinogen molecules, leading to a cascade of rapid pepsinactivation (and many more active pepsin molecules). This pathway isan example of:

a feedforward regulation

a positive feedback loop

a negative feedback loop

conditioning

4. The human body's arterial blood pH is tightly maintainedaround 7.4 by buffering agents that bind hydrogen ions to stop anychange in pH. If an acid-base imbalance overcomes the buffersystem, the body changes the ventilation rate, or the rate at whichgas enters or leaves the lungs. Changing the ventilation ratechanges the concentration of CO2 in the blood, which alters the pHof the blood. In this case, the muscles that control theventilation rate are acting as the:

homeostatic challenge
sensor
effector
integrator

5. The human body's arterial blood pH is tightly maintainedaround 7.4 by buffering agents that bind hydrogen ions to stop anychange in pH. If an acid-base imbalance overcomes the buffersystem, the body changes the ventilation rate, or the rate at whichgas enters or leaves the lungs. Changing the ventilation ratechanges the concentration of CO2 in the blood, which alters the pHof the blood. In this case, pH 7.4 is the:

homeostatic challenge
sensor
effector
set point

6. What is the equivalent of the mammalian mouth and nose in therespiratory system of insects?

alveoli
spiracles
tracheoles
epithelial tissue

7. For cells to maintain an appropriate solute concentration,_____ will occur; for cells to maintain an appropriate waterconcentration, _____ will occur.

diffusion, osmosis
osmosis, diffusion
diffusion, facilitated diffusion
diffusion, active transport

8. A marine fish with a cold body temperature that matches itscold surroundings is an example of

negative feedback

regulating
conforming
homeostasis

9 Fiddler crabs are small crabs that inhabit intertidal areas.When the tide comes in, the salinity rises to 35ppt and when thetide leaves, the salinity falls to 5ppt. Fiddler crabs can maintaintheir internal salinity at 32ppt when the external environmentranges from 20-40ppt, but cannot regulate at levels higher or lowerthan this. The range of 20-40ppt is the ____________________ forthese animals.

zone of conforming
zone of stability
osmoregulator conforming capacity
positive feedback effector range

10. Imagine you are entering a darkened cavern. You are excited,but also a little nervous. Your heart rate quickens, your bloodpressure rises slightly, and your digestive system activitydecreases as blood is diverted to your muscles—all changes thatprepare you should you need to move rapidly. This type of change isan example of:

positive feedback control
negative feedback control
a failure of homeostasis
feedforward regulation

The human body is truly remarkable and is designed tofunction effectively. Organs are important structures composed ofdifferent tissues that facilitate specific functions within thebody. Organs function as part of an integrated group of structuresknown as organ systems. These organ systems form the organizationalunits that are responsible for crucial processes necessary forsustaining life.

Examples of organ systems include but are not limitedto the cardiovascular system, the digestive system, themusculoskeletal system, the nervous system, the excretory system,the endocrine system and the respiratory system. Even organ systemsdo not function alone. These systems work together, interactingwith other organs in a functional network that keeps the body inbalance. (Look up the term homeostasis in your text.) When homeostasis orthe normal functioning of organ systems is disrupted, disease maydevelop causing injury to the body, or even death. In thisassignment, you will explore organ systems, as well as associateddiseases or malfunctions.

Assignment details:

Take a look at the following casestudies that detail an outcome associated with a disease/organmalfunction. Select onestudy to investigate further for yourassignment.

Critically evaluate the information provided andcorrelate it with the organ systems that are affected in thescenario. Use the information that you have gathered to answer theassignment questions that follow the case study. For assistancewith your assignment, please use your text, the AIU Library, Webresources, and course materials.

Case Study 1:

Atherosclerosis isnarrowing of arteries caused by the accumulation of fatty depositson the arterial walls.

On June 22, 2002 the St. Louis Cardinals werepreparing for their upcoming baseball game against the Chicagocubs. Concern arose when their prized pitcher, 33-year old DarrylKile did not show up for practice. Soon after, he was found stillin his hotel room where he had suddenly died in his sleep (New YorkTimes, 2002). It was discovered that the cause of death was relatedto three of his coronary arteries being 80-90% blocked as a resultof atherosclerosis (New York Times, 2002), which ultimately causedhim to undergo a heart attack.

Answer the following assignmentquestions:

  1. Why would atherosclerosis result in a heart attack?Provide a brief explanation based on how the heart functions.
  2. How are arteries different from veins andcapillaries? Describe the functions of both arteries andveins.
  3. Vertebrates and some invertebrates have a closedcirculatory system. Explain the advantage of having a closedcirculatory system over an open circulatory system?
  4. Briefly explain how the lymphatic system isassociated with the circulatory system?
  5. Describe one disease that affects the lymphaticvessels similarly to the way that atherosclerosis affects thearteries?

Case Study 2:

Cigarette smoking remainsthe leading preventable cause of death in the United States,causing an estimated 438,000 deaths - or about 1 out of every 5 -each year (National Cancer Institute, 2008).

Mr. Amos is now 57 years old and has been smoking forthe past 30 years of his life. A recent doctor's visit reveals thatMr. Amos has stage 3 lung cancer, characterized by his symptoms ofnagging chest pain, fatigue, coughing up blood, substantial weightloss, and increased carbon dioxide levels in his blood. The doctorinformed Mr. Amos that had he quit his smoking habit several yearsago, he would have reduced his risk for developing lung cancerlater in life. Mr. Amos immediately begins treatment for the lungcancer that has metastasized to his lymph nodes.

Answer the following assignmentquestions:

  1. What main components in cigarettes affect therespiratory system? Explain their effects on specific organs, cellsand/or processes in the respiratory system.
  2. There are alternate mechanisms of transportingcarbon dioxide (CO2) and oxygen (O2 ) in the blood. Explain howsmoking might lead to increased levels of carbon dioxide in theblood.
  3. Can smoking affect other organ systems of the body?Give specific examples and briefly explain your answer.
  4. How can you correlate cellular respiration with therespiratory system?
  5. Does smokeless tobacco present a reduced risk forlung cancer and other smoking associated diseases? Provide evidencefor your answer.

Case Study 3:

Gigantism is abnormallylarge growth during childhood caused by excess growth hormonesecreted by the anterior pituitary gland.

Robert Wadlow, born on February 22, 1918, weighed anormal eight pounds, six ounces. However, by the time Robertreached the age of six months old, he weighed 30 pounds (Hamilton,1993). Within only a year, his weight rose to 62 pounds, more thandouble the normal weight of a baby at 18 months. Aside from hisweight, Robert continued to grow at an astounding rate, reachingsix feet, two inches and 195 pounds by the time he was eight yearsold. Robert's unique size was attributed to an over activepituitary gland, which produced much higher than normal levels ofgrowth hormone. At the time of his death in July 1940 at the age of22, Robert had reached a height of 8 feet 11.1 inches and weighed485 pounds (Hamilton, 1993).

Answer the following assignmentquestions:

  1. How does growth hormone regulate various bodyfunctions in adults, and what could cause the excess secretion ofgrowth hormone?
  2. Discuss the relationship between growth hormone andinsulin, and are there complications associated with theirinteraction?
  3. Why is gigantism usually more difficult to treatthan dwarfism?
  4. Give examples of two other hormones secreted by thepituitary, and briefly describe how they specifically affect otherorgan systems of the body?
  5. Some athletes have resorted to the illegal use ofanabolic steroids to increase strength and muscle size. How areanabolic steroids different from growth hormone? Briefly explainyour answer.

References

Hamilton, S. (1993). Looking backand up: At Robert Pershing Wadlow, the gentle giant. Alton,IL: Alton Museum of History and Art.

National Cancer Institute. (2008). Tobacco statistics snapshot. Retrieved fromhttp://www.cancer.gov/cancertopics/tobacco/statisticssnapshot#0_references

The New York Times. (2002, July 17). Baseball: Coroner verifies the cause of Kile's death asnatural. Retrieved fromhttp://www.nytimes.com/2002/07/17/sports/baseball-coroner-verifies-the-cause-of-kile-s-death-as-natural.html?ref=darryl_kile

I JUST NEED SIMPLE/BASIC ANSWERS NOT LONG ANSWERS

1. Explain how life can be viewed at different levels of biological complexity.

2. Explain how researchers study biology at different levels, ranging from molecules to ecosystems.

3. Distinguish between discovery-based science and hypothesis testing, and describe the steps of the scientific method.

4. Tell whether a given topic or research study is about biology. Tell whether that study is discovery-based or hypothesis testing, or both.

5. If presented with a research study, propose what the Research Question was.

6. If presented with an example, tell whether a statement is a hypothesis, theory or law and why you think so.

Describe the general structure of atoms and their constituent particles.

Relate atomic structure to the periodic table of the elements. List the elements that make up most of the mass of all living organisms.

Explain how a single element may exist in more than one form, called isotopes, and how certain isotopes have importance in human medicine.

Compare and contrast the types of atomic interactions (bonds) that lead to the formation of molecules.

Tell which atoms and how many of each make up a given molecule (formula or diagram).

For a bond in a given molecule, tell whether the bond is covalent, and if it is, tell whether it is polar or nonpolar and why you think so.

Explain the concept of electronegativity and how it contributes to the formation of polar and nonpolar covalent bonds. Tell whether a given atom is electronegative or not, and why you think so. Label partial charges in a polar bond.

Draw five water molecules and label the atoms and bonds within and between the 5 molecules.

Describe how hydrogen bonding determines many properties of water.

List the properties of water that make it a valuable solvent, and distinguish between hydrophilic and hydrophobic substances.

Explain how water has the ability to ionize into hydroxide ions (OH–) and into hydrogen ions (H+), and how the H+ concentration is expressed as a solution's pH.

Explain the properties of carbon that make it the chemical basis of all life.

Describe the variety and chemical characteristics of common functional groups of organic compounds.

Diagram how small molecules may be assembled into larger ones by dehydration reactions and how hydrolysis reactions can reverse this process.

List the four major classes of organic molecules and macromolecules found in living organisms

If shown a molecule, tell whether it is organic or not and how you know.

If shown an organic molecule, tell whether it is an amino acid, nucleotide, fatty acid, steroid, monosaccharide or disaccharide and how you know.

Distinguish among different forms of carbohydrate molecules, including monosaccharides, disaccharides, and polysaccharides.

Relate the functions of plant and animal polysaccharides to their structure.

List the several different classes of lipid molecules important in living organisms.

Diagram the structure of a triglyceride and explain how it is affected by the presence of saturated and unsaturated fatty acids. Explain why some fats are solid at room temperature, and others are liquid.

Discuss how fats function as energy-storage molecules.

Apply knowledge of the structure of phospholipids to the formation of cellular membranes.

Describe the chemical nature of steroids and give an example of their biological importance.

Give examples of the general types of functions that are carried out in cells by different types of proteins.

Explain how amino acids are joined to form a polypeptide, and distinguish between a polypeptide and protein.

Describe the levels of protein structure and the factors that determine them. If shown a protein diagram, label parts that represent its levels of structure. Tell what kind of research techniques are used to determine protein structure.

Outline the bonding forces important in determining protein shape and function.

Explain what domains are and their importance in proteins.

Describe the three components of nucleotides.

Distinguish between the structures of DNA and RNA.

Tell how certain bases pair with others in DNA and RNA.

Discuss the 4 major categories of organic macromolecules found in living things, including structure, function and location of each.

Compare and contrast the general structural features of prokaryotic and eukaryotic cells.

Outline the differences in complexity among bacteria, animal, and plant cells.

Describe how a eukaryotic cell can be viewed as four interacting systems: the nucleus, cytosol, endomembrane system, and semiautonomous organelles.

Explain how the proteome underlies the structure and function of cells.

Analyze how cell size and shape affect the surface area/volume ratio.

Identify the location of the cytosol in a eukaryotic cell and list its general functions.

Describe the three types of protein filaments that make up the cytoskeleton. Identify which underlie cilia, flagella, centrioles, the nuclear lamina, and the brush border. Tell which are readily assembled and disassembled. Tell which are involved in various cell shape changes or movements.

Explain how motor proteins interact with microtubules or actin filaments to promote cellular movement.

Describe the structure and organization of the cell nucleus. Describe the structure and function of nuclear pores.

Outline the structures and general functions of the components of the endomembrane system.

Distinguish between the rough endoplasmic reticulum and the smooth endoplasmic reticulum.

Identify three important functions of the plasma membrane.

Tell why mitochondria and chloroplasts are called semi-autonomous organelles.

Discuss the evidence for the endosymbiosis theory.

Outline the structures and general functions of mitochondria and chloroplasts.

Explain how proteins are moved via vesicles through the endomembrane system.

If you are told about the function of a specific protein, tell where and in what type of cell that protein might be found.

Sketch and label a “typical” animal cell and a real animal cell such as a red blood cell or a muscle cell. Tell how it might be different than the “typical” cell in terms of its organelles and shape.

Sketch and label a “typical” plant cell and a real plant cell such as a root or leaf cell. Tell how it might be different than the “typical” cell in terms of its organelles and shape.

Describe the fluid-mosaic model of membrane structure. Tell why membranes are described as “fluid mosaics”.

Draw 10 phospholipid molecules as they would be arranged in a bilayer. Label the hydrophobic and hydrophilic parts.

61. Name all the places in a cell where membranes are found.

62. Describe at least three different categories of membrane proteins and tell what they do.

63. Describe what determines how fluid membranes are.

64. Explain how lipids are synthesized at the ER membrane.

65. Explain how transmembrane proteins are inserted into the ER membrane.

66. Compare and contrast diffusion, facilitated diffusion, passive transport, and active transport.

67. Explain the process of osmosis and how it affects cell structure.

68. Outline the functional differences between channels and transporters. Compare and contrast uniporters, symporters, and antiporters.

69. Explain the difference between primary active transport and secondary active transport.

70. Describe the structure and function of the sodium-potassium pump in animal cells and a similar pump in plants and prokaryotes.

71. Describe exocytosis and endocytosis and tell what molecules are moved across the membrane by these.

Discuss membrane transport, including its function and various forms and why all membranes have each form.

73. If a given cellular process is described, tell which form of transport might be involved.

List the different categories of animal tissue, providing general functions and specific examples of each.

Name the various organ systems found in many animals, list the components of each, and describe their general functions.

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