Which of the following is the correct pathway of sperm cells from their formation to ejaculation?
A. Seminiferous tubule, epididymis, rete testis, urethra, ejaculatory duct, ductus deferens
B. Seminiferous tubule, epididymis, rete testis, ejaculatory duct, ductus deferens, urethra
C. Seminiferous tubule, epididymis, rete testis, ductus deferens, ejaculatory duct, urethra
D. Seminiferous tubule, rete testis, epididymis, ductus deferens, ejaculatory duct, urethra
E. Seminiferous tubule, rete testis, epididymis, ejaculatory duct, urethra, ductus deferens
D. Seminiferous tubule, rete testis, epididymis, ductus deferens, ejaculatory duct, urethra
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Collagen, a helical protein, became straight and flat as the temperature of its environment was changed. Its primary structure was not altered. What happened to cause it to flatten?
A. Hydrogen bonds were broken. B. Peptide bonds were broken. C. Bonds between carbon and oxygen were broken. D. Peptide bonds were formed.
The most important factor determining the extent of evaporation of sweat is the ____________________ of the air
Fill in the blank(s) with correct word
The ejaculatory duct is formed by the
A. ampulla and the distal portions of the bulbourethral glands. B. ductus deferens and the ducts of the prostate gland. C. ampulla and the prostatic urethra. D. ampulla and the proximal portion of the seminal vesicle. E. ductus deferens and the ducts of the prostate gland and bulbourethral glands.
Glycogen is the
A. storage carbohydrate in animals. B. storage carbohydrate in plants. C. sugar found in RNA. D. major nutrient for most body cells. E. nondigestible plant polysaccharide.