In an antibody molecule, each loop of approximately 60 amino acids is called a ________.
Fill in the blank(s) with the appropriate word(s).
domain
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Major extinctions of dinosaurs are associated with large meteor impacts, including the final extinction that wiped them out at the Cretaceous-Tertiary boundary. The particulate matter that would have arisen as a result of impact would have entered the atmosphere and had secondary impacts. Some scientists believe that a fundamental difference between mammals and dinosaurs allowed mammals to survive this event, but doomed the dinosaurs. What may have characterized the last generation of dinosaurs as they went extinct?
A. Lungs clogged with dust. B. Highly skewed sex ratios. C. Hormonal disruptions due to contaminated water. D. Weak eggshells due to radiation. E. Inability to recognize mates due to diminished sunlight. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about dinosaurs? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A group of individuals born in the same period of time is called a(n) ________
Fill in the blank(s) with correct word
At what temperature is water most dense?
a. 0 degrees Celsius b. 1 degree Celsius c. 4 degrees Celsius d. 10 degrees Celsius e. 100 degrees Celsius
The evolutionary trends in primates include all of the following EXCEPT
A. stereoscopic vision. B. large, complex brain. C. a rounded, protruding face. D. mobile limbs. E. reduced reproductive rate.