Physiology - Final (Nightingale College) with all Correct
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Positive-feedback control systems: ✔Correct Answer--accelerate a change.
Of the pathogenic organisms, which of the following are the most complex?
-Viruses
-Tapeworms
-Bacteria
-Protozoa ✔Correct Answer--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 Answer--the body trying to maintain homeostasis and
a negative-feedback mechanism
The term that literally means self-immunity is: ✔Correct Answer--autoimmunity
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a
lipoprotein envelope are called: ✔Correct Answer--viruses
Pathogenesis can be defined as: ✔Correct Answer--the course of disease development.
Intrinsic control: ✔Correct Answer--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 Answer--transmitter
Negative-feedback control systems: ✔Correct Answer--oppose a change
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 Answer--All the above are correct of the negative-feedback mechanisms
The amino group in an amino acid is: ✔Correct Answer--NH3+
The element that is present in all proteins but not in carbohydrates is: ✔Correct Answer--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 Answer--salts
The term glycoprotein, a combination of two words, tells you that the compound is made of _____,
with _____ being the dominant component. ✔Correct Answer--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 Answer--essential amino acids
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? ✔Correct
Answer--Creatine phosphate
Which level of protein structure refers to the number, kind, and sequence of amino acids?
✔Correct Answer--primary
All of the following substances are organic except:
-lipids
-electrolytes
-carbohydrates
-proteins ✔Correct Answer--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 Answer--all of the above are true of RNA
The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are:
✔Correct Answer--Steroids
The type of lipoprotein associated with "bad" cholesterol and the production of atherosclerotic
changes in blood vessels is: ✔Correct Answer--LDL
What is the most important factor in determining the physical and chemical properties of fatty acids?
✔Correct Answer--Degree of saturation
Peptide bonds join together molecules of: ✔Correct Answer--amino acids
When two molecules of glucose are joined, they form which disaccharide? ✔Correct Answer--
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 Answer--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.
-None of the above is true. ✔Correct Answer--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 Answer--Sodium moves
into the cell and potassium moves out of the cell.
Water will move through the cell membrane by: ✔Correct Answer--osmosis
Diffusion requires ✔Correct Answer--a concentration gradient.
Which of the following terms is synonymous with tumor? ✔Correct Answer--Neoplasm
All of the following are examples of passive transport except:
-filtration
-osmosis
-endocytosis
-dialysis ✔Correct Answer--endocytosis
A DNA molecule is characterized by all of the following except:
-double helix shape
-obligatory base pairing
-ribose sugar
-phosphate group ✔Correct Answer--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.
-meiosis occurs in two steps. ✔Correct Answer--chromosome number remains at 46.
Which of the following is not true of diffusion?
-Uses cellular energy
-Can occur in living and nonliving cells
-May occur both into and out of the cell
-Energy source is cellular ✔Correct Answer--Uses cellular energy
A saline solution that contains a higher concentration of salt than a red blood cell would be:
✔Correct Answer--hypertonic
If a sequence of nitrogen bases in nucleic acid were A-U-C-G-A, which of the following would be true
about the nucleic acid?
-It contains deoxyribose sugar.
-It could be found only in the nucleus.
-It contains ribose sugar. ✔Correct Answer--It contains ribose sugar.
Twenty-three chromosomes per cell in humans is referred to as: ✔Correct Answer--haploid
& 100% Verified Answers| Actual Complete Exam|
Already Graded A+
Positive-feedback control systems: ✔Correct Answer--accelerate a change.
Of the pathogenic organisms, which of the following are the most complex?
-Viruses
-Tapeworms
-Bacteria
-Protozoa ✔Correct Answer--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 Answer--the body trying to maintain homeostasis and
a negative-feedback mechanism
The term that literally means self-immunity is: ✔Correct Answer--autoimmunity
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a
lipoprotein envelope are called: ✔Correct Answer--viruses
Pathogenesis can be defined as: ✔Correct Answer--the course of disease development.
Intrinsic control: ✔Correct Answer--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 Answer--transmitter
Negative-feedback control systems: ✔Correct Answer--oppose a change
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 Answer--All the above are correct of the negative-feedback mechanisms
The amino group in an amino acid is: ✔Correct Answer--NH3+
The element that is present in all proteins but not in carbohydrates is: ✔Correct Answer--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 Answer--salts
The term glycoprotein, a combination of two words, tells you that the compound is made of _____,
with _____ being the dominant component. ✔Correct Answer--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 Answer--essential amino acids
Which energy-releasing or energy-transferring molecule does not contain a nucleotide? ✔Correct
Answer--Creatine phosphate
Which level of protein structure refers to the number, kind, and sequence of amino acids?
✔Correct Answer--primary
All of the following substances are organic except:
-lipids
-electrolytes
-carbohydrates
-proteins ✔Correct Answer--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 Answer--all of the above are true of RNA
The types of lipids found that form hormones, such as cortisone, estrogen, and testosterone are:
✔Correct Answer--Steroids
The type of lipoprotein associated with "bad" cholesterol and the production of atherosclerotic
changes in blood vessels is: ✔Correct Answer--LDL
What is the most important factor in determining the physical and chemical properties of fatty acids?
✔Correct Answer--Degree of saturation
Peptide bonds join together molecules of: ✔Correct Answer--amino acids
When two molecules of glucose are joined, they form which disaccharide? ✔Correct Answer--
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 Answer--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.
-None of the above is true. ✔Correct Answer--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 Answer--Sodium moves
into the cell and potassium moves out of the cell.
Water will move through the cell membrane by: ✔Correct Answer--osmosis
Diffusion requires ✔Correct Answer--a concentration gradient.
Which of the following terms is synonymous with tumor? ✔Correct Answer--Neoplasm
All of the following are examples of passive transport except:
-filtration
-osmosis
-endocytosis
-dialysis ✔Correct Answer--endocytosis
A DNA molecule is characterized by all of the following except:
-double helix shape
-obligatory base pairing
-ribose sugar
-phosphate group ✔Correct Answer--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.
-meiosis occurs in two steps. ✔Correct Answer--chromosome number remains at 46.
Which of the following is not true of diffusion?
-Uses cellular energy
-Can occur in living and nonliving cells
-May occur both into and out of the cell
-Energy source is cellular ✔Correct Answer--Uses cellular energy
A saline solution that contains a higher concentration of salt than a red blood cell would be:
✔Correct Answer--hypertonic
If a sequence of nitrogen bases in nucleic acid were A-U-C-G-A, which of the following would be true
about the nucleic acid?
-It contains deoxyribose sugar.
-It could be found only in the nucleus.
-It contains ribose sugar. ✔Correct Answer--It contains ribose sugar.
Twenty-three chromosomes per cell in humans is referred to as: ✔Correct Answer--haploid
