Physiology - Final (Nightingale College) Week 15 Questions with Complete Solutions Latest Update
Positive-feedback control systems: - Correct Answers accelerate a change.
Of the pathogenic organisms, which of the following are the most complex?-Viruses -Tapeworms -Bacteria -Protozoa - Correct Answers Tapeworms Shivering to try to raise your body temperature back to normal would be an example of: -the body trying to maintain homeostasis.-a positive-feedback mechanism.-a negative-feedback mechanism. - Correct Answers the body trying to maintain homeostasis and a negative-feedback mechanism
The term that literally means self-immunity is: - Correct Answers autoimmunity
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a
lipoprotein envelope are called: - Correct Answers viruses
Pathogenesis can be defined as: - Correct Answers the course of disease development.
Intrinsic control: - Correct Answers is sometimes called autoregulation.
Which of the following is not one of the basic components in a feedback control loop?-Effector mechanism -Transmitter -Sensor -Integrating center - Correct Answers transmitter Negative-feedback control systems: - Correct Answers oppose a change 1 / 4
Negative-feedback mechanisms:
-minimize changes in blood glucose levels.-maintain homeostasis.-are responsible for an increased rate of sweating when air temperature is higher than body temperature. - Correct Answers All the above are correct of the negative-feedback mechanisms
The amino group in an amino acid is: - Correct Answers NH3+
The element that is present in all proteins but not in carbohydrates is: - Correct Answers nitrogen Which of the following is not one of the major groups of organic substances in the human body?-proteins -salts -lipids -nucleic acids - Correct Answers salts The term glycoprotein, a combination of two words, tells you that the compound is made of _____, with _____ being the dominant component. - Correct Answers carbohydrate and protein; protein Humans can synthesize 13 of 21 basic amino acids; the remaining 8, which must be included in the
diet, are called: - Correct Answers essential amino acids
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? - Correct Answers Creatine phosphate Which level of protein structure refers to the number, kind, and sequence of amino acids? - Correct Answers primary
All of the following substances are organic except:
-lipids -electrolytes -carbohydrates 2 / 4
-proteins - Correct Answers electrolytes Which of the following is not true of RNA?-it contains ribose sugar -it contains adenine -it is composed of smaller molecules called nucleotides -all of the above are true of RNA - Correct Answers all of the above are true of RNA The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are: - Correct Answers Steroids The type of lipoprotein associated with "bad" cholesterol and the production of atherosclerotic
changes in blood vessels is: - Correct Answers LDL
What is the most important factor in determining the physical and chemical properties of fatty acids?
- Correct Answers Degree of saturation
Peptide bonds join together molecules of: - Correct Answers amino acids
When two molecules of glucose are joined, they form which disaccharide? - Correct Answers maltose Which of the following is not true of carbohydrates?-They include substances commonly called sugars.-They are the body's primary source of energy.-They are a part of both DNA and RNA.-All of the above are true of carbohydrates. - Correct Answers All of the above are true of carbohydrates.Which of the following statements is true?-Amino acid chains form DNA.-The site of transcription is within the nucleus, whereas the site of translation is in the cytoplasm.-Uracil is present in DNA in place of thymine. 3 / 4
-None of the above is true. - Correct Answers The site of transcription is within the nucleus, whereas the site of translation is in the cytoplasm.Which is not true about the sodium and potassium pump?-It uses cellular energy.-Sodium moves into the cell and potassium moves out of the cell.-A carrier system is used.-It can move substances against their concentration gradient. - Correct Answers Sodium moves into the cell and potassium moves out of the cell.
Water will move through the cell membrane by: - Correct Answers osmosis
Diffusion requires - Correct Answers a concentration gradient.Which of the following terms is synonymous with tumor? - Correct Answers Neoplasm
All of the following are examples of passive transport except:
-filtration -osmosis -endocytosis -dialysis - Correct Answers endocytosis
A DNA molecule is characterized by all of the following except:
-double helix shape -obligatory base pairing -ribose sugar -phosphate group - Correct Answers ribose sugar
All of the following occur as a result of meiosis except:
-chromosome number remains at 46.-primitive sex cells become mature gametes.-the cells become haploid.
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