What is the purpose of the cilia and flagella of cells?
a. They generate the cell’s metabolism.
b. They provide movement for the cell.
c. They help maintain homeostasis.
d. They generate cell signaling.
e. They contract muscles
b
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During photorespiration, the phosphoglycolate (PGO) produced by RuBP oxygenation is eventually converted to PGA; 75% of the carbon in PGO is recovered. How many molecules of PGO are required to generate two molecules of PGA through this route?
A. five B. four C. three D. two E. one
Imagine that NASA discovered a new planet with an atmosphere rich in hydrogen gas, hydrogen sulfide, ammonia and methane. We would call this a(n)
A. reducing atmosphere, because of the availability of hydrogen atoms that can donate electrons. B. reducing atmosphere because the atmosphere would reduce the energy necessary to build molecules. C. oxidizing atmosphere because of the availability of oxygen compounds. D. oxidizing atmosphere because of the lack of oxygen gas. 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 the reducing atmosphere of the early earth? Choose Answer · Given what you now know, what information and/or problem solving approach 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 traits is an X-linked recessive disorder?
A. Marfan syndrome B. cystic fibrosis C. sickle-cell disease D. color blindness E. Tay-Sachs
Green and purple bacteria
A) contain chlorophyll a like plants. B) give off oxygen as a product of photosynthesis. C) live in salt water. D) include species that use sulfur in photosynthesis.