Crop plants have been protected from certain insects by the addition of a gene for a specific insect toxin from the bacterium  

A.  Agrobacterium tumefaciens.
B.  Bacillus thuringiensis.
C.  Herpes simplex.
D.  Pseudomonas.
E.  tobacco mosaic.


B.  Bacillus thuringiensis.

Biology & Microbiology

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Viruses attach to their hosts via ________.

A. carbohydrate attachments of the viral capsid B. viral flagella C. viral phospholipids D. host phospholipids E. host glycoproteins

Biology & Microbiology

Genes for which of the following may be transferred between Fecal Bacteria?

a. Toxin Production b. Fimbriae c. Capsules d. Hemolysins e. All of the Above

Biology & Microbiology

Which of the following statements is true?

A) Endospores are for reproduction. B) Endospores allow a cell to survive environmental changes. C) Endospores are easily stained in a Gram stain. D) A cell produces one endospore and keeps growing. E) A cell can produce many endospores.

Biology & Microbiology

During the Cambrian explosion approximately 535 to 525 million years ago,

A) all modern species of animals suddenly appeared. B) animals rapidly diversified in the oceans. C) a massive volcanic eruption nearly wiped out life on Earth. D) great forests produced peat layers that were later transformed into coal.

Biology & Microbiology