Biology 211

Practice Questions Exam 1

                                               

 

1.     Amino acid-based hormones __________________ to stimulate target gene activation.

  1. directly bind to DNA molecules in the nucleus of the cell
  2. bind to nuclear receptors which bind to DNA
  3. bind to plasma membrane receptors and use a second messenger system
  4. none of the above

 

2.     The posterior pituitary and infundibulum together are known as the _______________.

  1. adenohypophysis
  2. neurohypophysis
  3. hypothalamus
  4. thyroid gland

 

3.     _______________ is produced by the paraventricular nuclei of the hypothalamus and released by the posterior pituitary.

  1. Oxytocin
  2. Growth hormone
  3. Melatonin
  4. Calcitonin

 

4.     Which of the following hormones is NOT produced by the anterior pituitary?

  1. thyroid stimulating hormone
  2. adrenocorticotropic hormone
  3. corticotropin releasing hormone
  4. follicle stimulating hormone

 

5.     __________________ stimulates osteoclasts in bone to digest bone and release calcium to the blood.

  1. Calcitonin
  2. Thyroid stimulating hormone
  3. Parathyroid hormone
  4. Insulin

 

6.     Mineralocorticoids are produced by cells of the _________________ of the adrenal gland.

  1. zona glomerulosa
  2. zona fasciculata
  3. zona reticularis
  4. zona occludens

 

7.     The formed elements of blood include all of the following EXCEPT:

  1. erythrocytes
  2. leukocytes
  3. plasma
  4. platelets

 

8.     All of the following are factors associated with the development of anemias EXCEPT:

  1. an insufficient number of red blood cells
  2. decreased hemoglobin content of red blood cells
  3. abnormal hemoglobin
  4. increased production of the hormone erythropoietin

 

9.     White blood cells occupy approximately ____________ of the volume of whole blood.

  1. 20%
  2. 40%
  3. 60%
  4. < 1%

 

10.  _______________ are also known as polymorphonuclear leukocytes (PMNs).

  1. Neutrophils
  2. Basophils
  3. Monocytes
  4. Lymphocytes

 

11.  The final stage of hemostasis is:

  1. clot retraction
  2. platelet plug formation
  3. coagulation
  4. fibrinolysis

 

12.  Preformed antibodies that act against erythrocytes carrying ABO antigens not present on one's own cells are known as _____________.

  1. Rh factors
  2. agglutinins
  3. thrombins
  4. fibrins

 

13.  In which of the following tissues would lymph capillaries be most likely to be found?

  1. bones
  2. teeth
  3. central nervous system
  4. loose connective tissue

 

14.  Lacteals are present in the ________________.

  1. heart
  2. lungs
  3. liver
  4. intestinal mucosa

 

15.  Follicles are found mainly in the ______________ of the lymph node.

  1. medulla
  2. cortex
  3. capsule
  4. sinuses

 

16.  Which of the following is NOT a function of the spleen?

  1. Production of thymosins for the maturation of T cells
  2. Production of red blood cells
  3. Storage of breakdown products of red blood cells
  4. Storage of blood platelets

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answers: c, b, a, c, c, a, c, d, d, a, c, b, d, d, b, a