Anaphylaxis is the name given to allergic reactions caused by IgE-mediated release of mast cell granules

Indicate whether this statement is true or false.


TRUE

Biology & Microbiology

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In the first step of their experiments, Jacob and Monod treated E. coli cells with ultraviolet light or X-rays to _____

A) decrease the rate of gene expression B) induce DNA repair enzymes C) increase the frequency of mutations in all genes D) selectively mutate the lac operon, leaving all other genes unmutated

Biology & Microbiology

What animal has kidneys that are so efficient that it never has to drink water and can obtain all of its water from its food? 

A. camel B. desert lizard C. gerbil D. pocket mouse E. kangaroo rat

Biology & Microbiology

Mutations are important to the evolution of a species because they

a. accelerate the transcription rate of DNA b. are a source of genetic variability c. happen over the long period of time that evolution requires d. cut out and replace damaged or useless genes

Biology & Microbiology

Which of the following is not a part of the kidney?

A. pelvis B. hypothalamus C. medulla D. collecting ducts E. cortex

Biology & Microbiology