The waterproofing protein in the skin is called
a) dermicidin.
b) keratin.
c) melanin.
d) lysozyme.
Ans: b) keratin.
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What does the biological species concept use as the primary criterion for determining species boundaries?
A) geographic isolation B) niche differences C) gene flow D) morphological similarity E) molecular (DNA, RNA, protein) similarity
In brown fat, ________ present in the inner mitochondrial membrane uncouples ATP synthesis from electron transport in infants and other newborn mammals.
A) thermogenin B) fluorocitrate C) coenzyme A D) submitochondrial particles E) respirasomes
Which features of naked mole rats are similar to eusocial insects? (Check all that apply)
_____ a single queen is responsible for breeding _____ colony has a large number of individuals _____ division of labor _____ haplodiploidy _____ higher relatedness between siblings than between parent and child 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 group living in different animal groups? 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? Reflection: 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?
Each tip of the phylogenetic tree above represents:
a. an extinction. c. a living or extant taxa. b. a domain. d. Any of the above.