What do some turtles, most notable soft shell turtles and the leatherback sea turtle, have instead of scrutes?
What will be an ideal response?
Answer: Reduced bones in the carapace and a covering of leathery skin
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Lipopolysaccharides are a common class of T-dependent antigens.
Answer the following statement true (T) or false (F)
In this figure, the authors of the study looked for a correlation between which two variables?
A. being extinct and nasal cross-section
B. mass and endothermy
C. being extinct and mass
D. mass and nasal cross-section
E. presence of a turbinate and nasal cross-section
Food chains rarely have more than three levels of consumers because
a. the animals are too large to search for prey. b. the growing season of plants is not long enough. c. pyramids do not go that high. d. the amount of energy available is too small. e. humans intervene.
Over the years, sophisticated plasmid vectors have been developed for use in recombinant DNA technology. List at least two features that have been introduced in particularly useful vectors
What will be an ideal response?