Diabetes is a chronic disease in which the body cannot produce ________________, a chemical that allows cells to take up and break down sugar from the blood.
A) erythropoietin
B) human growth hormone
C) aldehyde dehydrogenase
D) insulin
E) polysaccharide
D) insulin
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Which structure is found in a section of the testis?
(a) secondary spermatocytes. (b) sperm. (c) Sertoli cells. (d) all of the above.
An infectious agent already existing on or in the body is called ________.
A. exogenous B. axenic C. endogenous D. an exotoxin E. an enterotoxin
A semi-fluid matrix called ________ fills the inside of a cell.
Fill in the blank(s) with the appropriate word(s).
Which is an accurate statement about the anatomy of the human excretory system?
a. Bowman's capsule is a network of capillaries inside the glomerulus. b. The proximal tubule is the portion of the nephron tubule farthest from Bowman's capsule. c. The renal cortex, which contains the nephrons, is interior to the renal medulla. d. The loop of Henle is located between the proximal tubule and the distal tubule. e. The distal tubule of a nephron connects with the renal pelvis of the kidney via the ureter.