Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes?

A) autotrophic euglenids
B) diatoms
C) dinoflagellates
D) red algae
E) cyanobacteria


Ans: E) cyanobacteria

Biology & Microbiology

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Which of the following are produced as a result of cellular respiration?

A) ATP and water B) carbon dioxide and ATP C) carbon dioxide, water, and ATP D) oxygen and glucose

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All of the following statements about bacterial basic genome structure are true EXCEPT:

A. Bacterial function that are related to each other are located next to each other and called operons B. Some members of eubacteria have a primitive nucleus C. Bacteria contain little non-coding DNA, compared to higher eukaryotes D. Most bacteria have a single circular DNA chromosome E. This genetic material are found as nucleoid form

Biology & Microbiology

What are the three strategies for defending against foreign organisms, cells, or molecules?

What will be an ideal response?

Biology & Microbiology

True or False: Humans are dead-end hosts for the West Nile virus, because they do NOT develop the viremia necessary to infect mosquitoes

a. TRUE b. FALSE

Biology & Microbiology