Fructose and glucose are
a. isotopes.
b. monosaccharides.
c. disaccharides.
d. six-carbon sugars.
e. both monosaccharides and six-carbon
sugars.
E
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Ctenopores (comb jellies):
A. have a separate mouth and anal pore, unlike cnidarians. B. have a separate epidermis and endodermis, which cnidarians lack. C. are usually filter feeders that attach themselves to the ocean bottom. D. are a type of bilaterian.
Meerkats are small desert mammals that live in groups of 20–50 animals. You observe a female meerkat who spends all of her time caring for the 1-year-old offspring of her sister (her nieces and nephews)
The aunt is capable of reproduction but has not reproduced. Which of the following would contribute to the evolution of this behavior pattern? A. The odds of any one female reproducing are completely random. B. Offspring require the efforts of a single adult (the mother) in order to be successful. C. Offspring require the efforts of at least two adults in order to be successful. D. Offspring are independent at the age of three months, with no adult care after that point.
During DNA cloning, why is the DNA of interest inserted into the middle of the lacZ+ coding sequence in the plasmid
vector?
a. It makes the bacteria resistant to the antibiotic. b. It allows researchers to distinguish bacteria that contain the plasmid from those that do not. c. It aids scientists in developing new antibiotic treatments. d. It allows researchers to distinguish bacteria that contain the recombinant plasmid from those that contain just the vector. e. It makes the bacteria produce more clones.
As the volume of the chest wall increases, the concomitant expansion of the lungs is due to a(n)
A) increase in intrapleural pressure. B) decrease in intra-alveolar pressure. C) increase in atmospheric pressure. D) increase in transpulmonary pressure. E) decrease in transpulmonary pressure.