All organisms with circulatory systems have a heart
Indicate whether the statement is true or false.
ANSWER: True
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Lactobacillus in the female reproductive tract
A. is the causative agent in common yeast infections. B. is protective. C. is indicative of underlying infection. D. can contribute to STIs. E. can lead to pelvic inflammatory disease.
Which characteristic is not found in all vertebrates?
1.Cranium 2.Neural crest cells 3.Vertebral column 4.Determinate cleavage
Glucose and fructose
a. form rings with the same number of carbon atoms. b. both have an oxygen atom as part of their ring structure. c. are alike in that both have identical functional groups. d. contain the same number of hydrogen atoms and hydroxyl groups. e. are disaccharides.
The overall efficiency of aerobic respiration in eukaryotes is approximately
A) 10%. B) 25%. C) 55%. D) 75%. E) 100%.