Which of the following animals use air sacs to ventilate its lungs?

a. humans
b. birds
c. frogs
d. reptiles
e. horses


B

Biology & Microbiology

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Oocytes are found in an ovary in

(a) seminiferous tubules. (b) follicles. (c) corpora lutea. (d) none of the above.

Biology & Microbiology

The wet mount and Gram stain of vaginal secretions from a patient who has bacterial vaginosis caused by Gardnerella vaginalis will reveal large:

a. squamous epithelial cells with numerous attached pleomorphic gram-variable or gram-negative coccobacilli and rods. b. numbers of large gram-positive rods. c. numbers of polymorphonuclear leuko-cytes. d. pleomorphic gram-negative rods with many leukocytes.

Biology & Microbiology

If the heritability of criminality is 0.55 in twin studies, what inference can be made about "nature versus nurture" for determining criminality?

a. Children of criminal have a 55% chance of becoming criminals b. Criminal is mainly due to differences in environmental conditions. c. Equal chances exist for any chiold to become a criminal if raised in that environment d. Fifty-five percent of the variability is due to differences in genotypes.

Biology & Microbiology

bile aids in the breakdown of which moecule

What will be an ideal response?

Biology & Microbiology