An important tool for identification of bacteria was developed by (H. C. Gram/R. Koch/S. Winogradski).

Fill in the blank(s) with the appropriate word(s).


H. C. Gram

Biology & Microbiology

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The most important stimulus in the control of respiration is the concentration in the blood and other body fluids of

(a) oxygen (O2). (b) carbon dioxide (CO2). (c) hydrogen ions (H+). (d) nitrogen (N2).

Biology & Microbiology

When we watch Olympic athletes perform, we are admiring the expert control of which systems working together?  

A.  skeletal, endocrine, and circulatory systems B.  nervous, circulatory, and skeletal systems C.  muscular, integumentary, and circulatory systems D.  nervous, muscular, and skeletal systems 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 movement? 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 three modes of selection would be most likely to result in speciation? Why?

What will be an ideal response?

Biology & Microbiology

Trichomoniasis is a bacterial infection that is sexually transmitted; chronic infection often results in blindness, damage to the nervous system, and eventually death

Indicate whether the statement is true or false

Biology & Microbiology