Aquifex cannot use which of the following as electron donors?
A. Thiosulfate
B. Sulfur
C. Glucose
D. Hydrogen
Answer: C
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One possible reason that there are not any really large insects currently living on Earth is that
A. gas exchange across their moist skin surfaces cannot support the metabolic needs of a large body. B. they do not have as many papulae as echinoderms. C. their gills do not have as many lamellae as fish gills. D. the bulk flow of air through their tracheal tubes would be more difficult the larger the body and longer the tracheal tubes. E. their lungs never evolved to be as highly branched as a mammal's. 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 respiration in insects? 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?
Which of the following is FALSE about
camptodactyly? a. Not all individuals who inherit the allele do express the allele. b. The condition affects the shape and mobility of fingers. c. Some individuals have abnormal fingers on only one hand. d. It is caused by a multiple allele system. e. Individual differences in the expression of this gene may stem from a variety of causes
Centrioles are also called basal bodies
Indicate whether the statement is true or false
Certain researchers have published peer-reviewed reports that the use of zinc lozenges reduces the length and severity of cold symptoms. Why are some scientists still skeptical about the merits of using zinc lozenges during a cold?
A) Most people get zinc in their diet so extra zinc lozenges may not affect a cold. B) Ideas about vitamin C have been discredited, so zinc will also be ineffective. C) There is no way of knowing if the original work was properly controlled. D) There may be other reasons why the people taking zinc lozenges recovered faster.