The 21st and 22nd amino acids found in proteins are the rare amino acids ________ and ________

Fill in the blank with correct word.


Answer: selenocysteine; pyrrolysine

Biology & Microbiology

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In ____, the parent separates into two or more offspring of approximately the same size

a. fission b. fertilization c. fragmentation d. budding e. parthenogenesis

Biology & Microbiology

The simple cuboidal cells found in kidney tubules have which function?

A. allow exchange of substances by diffusion and osmosis B. protect areas subject to abrasion C. secrete and absorb substances D. secrete hormones E. secrete and propel mucus

Biology & Microbiology

Which term refers to the initial branches of the trachea that lead into each lung?

a. bronchioles b. alveoli c. pleura d. bronchi

Biology & Microbiology

Which of the following pertains to both tetanus and food-borne botulism?

A) It is caused by enterotoxins of the pathogen. B) It can be treated with antibiotics. C) Nausea and diarrhea are symptoms. D) Treatment involves antitoxin therapy. E) Exotoxin blocks acetylcholine release.

Biology & Microbiology