Epidemic curves were prepared by plotting number of cases of disease on the Y-axis and dates on the X-axis. Graph would show a sustained increase in cases over a period of time until source is identified and eliminated.

A. Propagated Epidemic
B. Point-source Epidemic
C. Common-source Epidemic


C. Common-source Epidemic

Biology & Microbiology

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An accurate and comprehensive description of pseudogenes must include  

_____ Pseudogenes may have some gene-like features such as a promoter and splice sites. _____ Pseudogenes encode proteins, but the translated proteins are non-functional. _____ Pseudogenes can provide insight into the evolutionary history of the related functional gene. _____ Every pseudogene has a similar DNA sequence to some functional gene. _____ All pseudogene pretent to transcribe other genes when they only transcribe one type of genetic information.

Biology & Microbiology

Which of these is not found in RNA?

A) phosphate B) deoxyribose C) purines D) ribose

Biology & Microbiology

In which of the following ways does a root

differ from a shoot?

a. a root only has apical meristems -- a shoot could have both b. a root lacks an epidermis- a shoot does not lack an epidermis c. roots lengthen when cells above the apical meristem elongate- in shoots, cell elongation below the apical meristem causes the shoot to lengthen d. in a root the apical meristem at the tip never changes its position- in shoots the apical meristem does change its position as the stem elongates e. all of these are differences between roots and shoots

Biology & Microbiology

Energy from electron transport reactions is stored as a ________ gradient that is higher in the intermembrane space than in the mitochondrial matrix.

A) electron B) ATP C) proton D) NADPH

Biology & Microbiology