Segmentation genes, such as the pair-rule class, are inherited through mitochondrial DNA in Drosophila

Indicate whether the statement is true or false


FALSE

Biology & Microbiology

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Buffers can increase the pH of a solution when acids are added

Indicate whether the statement is true or false.

Biology & Microbiology

Molecules that regulate defense responses via signal transduction pathways are called ____

a. complement proteins b. histamines c. macrophages d. cytokines e. defensins

Biology & Microbiology

If each human lung contains about 300 million alveoli with a summed total surface area for gas exchange of 40 square meters, what is the approximate surface area of a single alveolus?  

A.  0.133 square micrometers B.  7.5 square micrometers C.  750 square micrometers D.  1.33 square micrometers E.  133 square millimeters F.  7.5 square millimeters 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 alveoli? 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?

Biology & Microbiology

Which of the following is (are) associated with a

teenager’s first attempt at smoking? a. headaches b. coughing c. dizziness d. nausea e. all of these

Biology & Microbiology