During the development of RBCs, the cell nucleus is ejected. The resulting cell is a:
A) stem cell
B) proerythroblast
C) reticulocyte
D) mature erythrocyte
Ans: C) reticulocyte
Anatomy & Physiology
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Which cells secrete testosterone?
a) Sertoli cells b) Spermatogenic cells c) Leydig cells d) Oogonia e) Chief cells
Anatomy & Physiology
Riboswitches are folded RNAs that act as switches to turn protein synthesis on or off in response to ________
A) specific codes from the DNA B) changes in the environment C) the presence or absence of ubiquitins D) specific tRNAs
Anatomy & Physiology
Using Figure 8.1, match the following:
1) Periosteum. 2) Articular cartilage. 3) Joint (synovial) cavity. 4) Synovial membrane. 5) Fibrous capsule.
Anatomy & Physiology
What is the atmospheric (barometric) pressure at sea level?
a. 660 mm Hg b. 700 mm Hg c. 720 mm Hg d. 760 mm Hg e. 860 mm Hg
Anatomy & Physiology