Nourishment is provided to a primary oocyte via which one of the following?
A) the endometrium layer in the uterus
B) the afferent capillaries
C) the zona pellucida
D) the cervical plug
E) a layer of granulosa cells
E
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Intermediate filaments:
A. have a diameter that is larger than a microfilament, but smaller than a microtubule. B. play an important role in maintaining cell shape. C. plan an important role in preventing skin from tearing by shear stress. D. undergo little change in length in comparison to microtubules and microfilaments. E. All of these choices are correct.
In amphibians, what function does the cloaca
serve?
a. urination b. defecation c. reproduction d. locomotion e. all of these except locomotion
DNA coding regions that affect the same trait are called
a. homologues. b. alleles. c. autosomes. d. loci. e. gametes.
External genitalia of the male reproductive system include the
A) ejaculatory duct. B) urethra and scrotum. C) penis and scrotum. D) penis. E) penis, urethra, and ejaculatory duct.