Biochem Exam 4

Card Set Information

Author:
Anonymous
ID:
215546
Filename:
Biochem Exam 4
Updated:
2013-04-24 13:40:43
Tags:
Biochemistry
Folders:

Description:
rutgers introductory biochem exam 4 questions
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What would you like to do?


  1. 1) The liver performs all of the following functions except

    A) Blood glucose regulation
    B) Processing of foreign molecules
    C) Storage of energy in the form of fat
    D) Synthesis of plasma protein
    E) Synthesis of urea
    C
  2. 2) During fasting and prolonged starvation, skeletal muscle

    A) Protein is degrades to provide amino acids to the liver for gluconeogenesis
    B) Released as fat into the blood for storage in adipose tissue
    C) Is synthesized from blood lactate
    D) Converts glutamine molecules to proline
    E) None of the above are correct
    A
  3. 3) The cells that
    line the small intestine, which are responsible for the absorption of nutrients
    into the body, are called

     

     

    A) Adipocytes

     

    B) Tubule cells

     

    C) Hepatocytes

     

    D) Enterocytes

     

    E) Epithelial cells
    D
  4. 4) The functions of
    the kidney include all of the following except

     

     

    A) Blood pH regulation

     

    B) Body water regulation

     

    C) Reabsorption of electrolytes, sugars, and
    amino acids from the urinary filtrate

     

    D) Filtration of blood plasma which results in
    the excretion of water-soluble waste products

     

    E) Production of urea from ammonia
    E
  5. 5) The most
    distinctive characteristic of living organisms is

     

     

    Cellular structure

     

    The autonomous capacity to sustain adequate operating conditions

     

    Utilization of carbon compounds as food

     

    Complex cellular mechanisms

     

    Utilizing environmental materials as energy
    sources
    B
  6. 6) A simple system
    for information flow is composed of three components : reception, transduction
    and response.  In multicellular organisms
    hormones play a role in which phase?

     

     

    A)  Reception

     

    B) 
    Transduction

     

    C)  
    Response

     

    D) Hormones are not involved in the process of
    information flow

     

    E) Both A and B are correct
    Ans  A
  7. 7) In a metabolic
    steady state the rate of anabolic processes is approximately equal to:

     

     

    Catabolic processes

     

    Cellular energy needs

     

    Nutrient intake

     

    Cellular repair and growth

     

    B and C
    A
  8. 8)  In animals the vast majority of water soluble
    hormones are



    Peptides

    Steroids

    Polypeptides

    Carbohydrates

    A and C
    E
  9. 9) The molecules that
    mediate the growth-promoting actions of GH are referred to as the

     

     

    A) Interferons

     

    B) Mitogens

     

    C) Insulin-like growth factors

     

    D) Both B and C are correct

     

    E) None of the above are correct
    C
  10. 10) Symptoms of uncontrolled
    diabetes mellitus include all of the following except

     

     

    A) Hyperosmolar hyperglycemic nonketosis

     

    B) Hypoglycemia

     

    C) Hyperlipoproteinemia

     

    D) Ketoacidosis

     

    E) Polyuria
    B
  11. 11) Steroid hormones

     

     

    A) Are transported in blood attached to transport
    proteins

     

    B) Bind to intracellular receptors

     

    C) Diffuse through the plasma membrane of target
    cells

     

    D) Both A and B are correct

     

    E) All of the above are correct
    E
  12. 12)
    Which of the following is not a major source of extracellular signal molecules?



    Steroids

    Modified
    amino acids

    Carbohydrates

    Fatty
    acids

    Proteins
    C
  13. 13) The biological
    effects of atrial natriuretic factor appear to be mediated by ______.

     

     

    A) cAMP

     

    B) cGMP

     

    C) PIP2

     

    D) AG

     

    E) IP3
    B
  14. 14) In
    animals the ______ system has a primary responsibility for co-ordinating
    metabolism.



    Nervous

    Lymphatic

    Hepatic

    Endocrine

    A and D
    E
  15. 15) The IP3
    receptor

     

     

    A) Binds cGMP

     

    B) Is associated with Gi

     

    C) Is a calcium channel

     

    D) Both B and C are correct

     

    E) All of the above are correct
    C
  16. 16) A DNA segment
    that binds a hormone-receptor complex is called a _________.

     

     

    A) DRE

     

    B) DAG

     

    C) EGF

     

    D) HRE

     

    E) IGF
    D
  17. 17) Calmodulin is a

     

     

    A) Transmembrane receptor

     

    B) Calcium-binding protein

     

    C) HSP

     

    D) Plant hormone

     

    E) A, B and C are correct
    B
  18. 18) Insulin
    resistance is

     

     

    A) A risk factor for Type I diabetes

     

    B) A risk factor for Type II diabetes

     

    C) Caused by excessive production of ANF

     

    D) Associated with damage to the adrenal gland

     

    E) None of the above are correct
    B
  19. 19)  Receptors for most water soluble hormones are
    located in what part of the cell?



    Plasma membrane

    Endoplasmic
    reticulum

    Nucleus

    Cytoplasm

    Nuclear
    membrane
    A
  20. 20)  Which of the following is not a second
    messenger molecule?

     

     

    A cGMP

     

    B) cAMP

     

    C) Calcium

     

    D) Steroids

     

    E) Inostol-phospholipid system
    D
  21. 21) The most
    prominent mechanism to prevent excessive hormone syntheis is

     

     

    Desensitization

     

    Downregulation

     

    Feedback inhibition

     

    Target cell stimulation

     

    Sensitization
    C
  22. 22)
    Enterocytes require large amounts of energy supplied by



    Glucose
    oxidase

    Fatty
    acid degradation

    Lactose
    oxidation

    Glutamine

    Alanine
    D
  23. 23) The
    organ responsible for processing most foreign molecules is



    Intestine

    Stomach

    Liver

    Kidney

    Blood
    C
  24. 24)
    Insulin-resistance is associated with all of the following except _______.

     

     

    A) Obesity

     

    B) Desensitizatioin

     

    C) Down-regulation

     

    D) IDDM

     

    E) NIDDM
    D
  25. 25) Biochemical
    signal molecules include _________.

     

     

    A) Amino acids

     

    B) Fatty acid derivatives

     

    C) Steroids

     

    D) Peptides

     

    E) All of the above are true
    E
  26. 26) Receptor tyrosine
    kinases are transmembrane receptors that bind ligands such as

     

     

    A) Insulin

     

    B) Epidermal growth factor

     

    C) Platelet derived growth factor

     

    D) Insulin like growth factor

     

    E) All of the above
    E
  27. 27) Which of the
    following molecules is a second messenger?

     

     

    A) TSH

     

    B) cGMP

     

    C) Proline

     

    D) Calcium

     

    E) Both B and D are correct
    E
  28. 28 The
    organ responsible for the regulation of blood pH is



    Liver

    Kidney

    Intestine

    Brain

    Stomach
    B
  29. 29) Most diabetic
    complications are the result of

     

     

    A) Glycation

     

    B) Hyperglycemia

     

    C) Damage to the vascular system

     

    D) Both A and B are correct

     

    E) All of the above are correct
    E
  30. 30) The principle
    target tissues of insulin include

     

     

    A) Skeletal muscle

     

    B) Liver

     

    C) Adipose tissue

     

    D) Both B and C are correct

     

    E) All of the above are correct
    E
  31. 31) Animals employing
    several mechanisms to prevent excessive hormone action and release. Examples
    include which of the following?

     

     

    Genetic regulation

     

    Feedback inhibition

     

    Desensitization

     

    Down regulation

     All of the above are true
    E
  32. 32) Which of the
    following molecules do GPCRs not respond to?

     

     

    Catecholamines

     

    Oxytocin

     

    Light

     

    Dopamine

     

    Insulin
    E
  33. 33) Which of the
    following is a role of PKB

     

     

    Stimulation of glycogen synthesis

     

    Inhibition of lipolysis

     

    Glucose transport into adipocytes

     

    Activation of mTOR

     

    All of the above are roles of PKB
    E
  34. 34)  An example of a cytokine is



    Epidermal
    growth factor

    Interleukins

    Interferons

    Insulin-like
    growth factors

    B and C
    E
  35. 35) The most serious acute
    symptom of type 1 diabetes is

     

     

    Anemia

     

    Ketoacidosis

     

    Hypoglycemia

     

    Insulin resistance

     

    Both A and C are correct
    B
  36. Hyperosmolar
    hyperglycemic non-ketosis can occur in type _____

     

    Diabetes

     

     

    Type I

     

    Type II

     

    Insulin dependent diabetes

     

    Is present in all forms of diabetes

     

    Is not a symptom of diabetes
    B
  37. During periods of
    starvation muscle reduces its consumption of glucose. This spares its use for
    which of the following organs?

     

     

    Liver

     

    Heart

     

    Kidneys

     

    Brain

     

    Lungs
    D
  38. Leptin is secreted by
    which of the following tissues?

     

     

    Brain

     

    Liver

     

    Adipose tissue

     

    Muscle

     

    Gasterintestinal tract
    C
  39. The brain consumes
    about _______% of the body’s energy.

     

     

    10

     

    20

     

    30

     

    40

     

    50
    B
  40. The
    phosphatidylinositol cycle mediates the action of all of the following except ______.

     

     

    Acetylcholine

     

    Insulin

     

    Glucagon

     

    Vasopressin

     

    GRH
    C
  41. 41)) Metabolism of
    fructose in the liver rapidly depletes which of the following

     

     

     

    NADPH

     

    ATP

     

    Triose phosphate

     

    AMP

     

    Glucose
    B
  42. 42) An autoimmune
    disease caused by the destruction of the insulin producing beta cells of the
    pancreas is called

     

     

    Hyperglycemia

     

    Dyslipidemia

     

    Glucosuria

     

    Type II diabetes

     

    Type I diabetes
    E
  43. 43) Extreme thirst
    and frequent urination in diabetics is directly caused by

     

     

    Osmotic diuresis

     

    Hyperglycemia

     

    Dyslipidemia

     

    Glucosuria

     

    Adipoisledimia
    D
  44. 44) Type II diabetes
    is uniquely characterized by:

     

     

    Hyperinsulinemia

     

    Depressed insulin levels

     

    Insulin resistance

     

    Depressed glucose levels

     

    A and C
    E
  45. 45) Which of the
    following carbohydrates is a major contributing cause of

     

    dyslipidemia non-alcoholic fatty liver disease?

     

     

    Glucose

     

    Ribose

     

    Fructose

     

    Galactose

     

    Xylose
    C
  46. 46) Urea synthesis is
    the responsibility of which organ of the body?

     

     

     

    Kidney

     

    Liver

     

    Intestine

     

    Stomach

     

    Lung
    B

What would you like to do?

Home > Flashcards > Print Preview