In which direction would phloem sap flow if there were a greater concentration of sucrose molecules in the roots compared to the leaves?
A. from leaf to root
B. from root to leaf
C. There would not be enough turgor
pressure to move the sap.
B
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A danger in using E. coli in cloning is that
A. E. coli could cause disease. B. the human cells may reject the insertion. C. the exons may invert the introns. D. the outer membrane is toxic to humans.
Goblet cell hyperplasia is associated with asthma. Based on their function, what is the likely outcome of an overabundance of goblet cells?
A. decreased mucus production B. excess mucus production C. excess O2 absorption D. decreased CO2 absorption 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 goblet cells? 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?
An organism that is heterozygous for a specific trait is a __________.
Fill in the blank(s) with the appropriate word(s).
Peristalsis refers to waves of muscular contractions
____________________ Indicate whether the statement is true or false.