According to the fossil record, which of the following were the first vertebrates to appear on land?
A. reptiles
B. mammals
C. fish
D. birds
E. amphibians
E. amphibians
Biology & Microbiology
You might also like to view...
The most common agent(s) causing subacute bacterial endocarditis is/are
A. Streptococcus pyogenes. B. Pseudomonas aeruginosa. C. normal skin or mouth microbiota. D. Escherichia coli.
Biology & Microbiology
Which of the following structures help the egg reach the fallopian tubes during ovulation?
a. Corpus luteum b. Fimbrae c. Endometrium d. Oviducts
Biology & Microbiology
Rickets is caused by
a. overexposure to UV radiation. b. an excess of calcitonin. c. inadequate amounts of vitamin D. d. an excess of ascorbic acid. e. a fetal deficiency of thyroid hormone.
Biology & Microbiology
Which of the following bacterial genera is useful for sewage treatment?
A) Burkholderia B) Thiobacillus C) Neisseria D) Zoogloea E) Nitrosomonas
Biology & Microbiology