the acrosome reaction occurs, when the sperm_____________?
(A) Enters the uterine cavity
(B) Comes in contact with zone pellucida
(C) Penetrates corona radiate
(D) Penetrates cell membrane of oocyte
Regulated bone growth through puberty occurs through__________________?
(A) Endophyseal plates
(B) Ectophyeseal plates
(C) Epiphyseal plates
(D) Chondrophyseal plates
Which of the following is not a marker of bone formation_________________?
(A) Alkaline phosphatase
(B) Osteocalcin
(C) Procollagen marker
(D) Hydroxy proline
Calcium ions triggers muscle contraction by binding to ___________________?
(A) Actin
(B) Myosin
(C) Troponin
(D) Tropomyosin
Which of the following events DO NOT occur in rods in response to light_______________?
(A) Structural changes in rhodopsin
(B) Activation of transducin
(C) Decreased intracellular cGMP
(D) Opening of Na+ channels
The male sex hormone testosterone is produced by______________?
(A) Sertoli cells
(B) Epithelial cells
(C) Interstitial cells of Leydig
(D) Primitive term cells
In peripheral tissues which of the following contains substance P______________?
(A) Plasma cell
(B) Mast cell
(C) Nerve terminal
(D) Vascular endothelium
Most important function of albumin in body is_______________?
(A) Oncotic pressure
(B) Drug transport
(C) Toxic transport
(D) Coagulation
The major functional difference between DNA and RNA is_____________?
(A) RNA contains ribose
(B) DNA carries the information in all organizations
(C) DNA is localized in nucleus
(D) RNA does not contain thymine
The oral and pharyngeal phases of swallowing take place very rapidly and last about______________?
(A) 3.5 seconds
(B) 1-1.5 seconds
(C) 6.0 seconds
(D) 9.5 seconds