Male gonads are __________, which produce sperm and the sex hormone __________. Fill in the blank(s) with the appropriate word(s)


testes; testosterone

Biology & Microbiology

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Which common crop may contain traces of hormone-like substances that may affect human health?  

A.  corn B.  wheat C.  peanuts D.  soybean E.  wine grapes

Biology & Microbiology

Which of the following characteristics do all animals share?

A. They are multicellular prokaryotes. B. They are single-celled eukaryotes. C. They are multicellular eukaryotes. D. They are single-celled prokaryotes.

Biology & Microbiology

Which of the following techniques would be best used to measure the strength of a v-SNARE-t-SNARE interaction?

A) X-ray crystallography B) TIRF microscopy C) GFP fusion proteins D) optical tweezers E) radioactive pulse labeling

Biology & Microbiology

This molecule transmits heredity information:a

cholesterol. b. adenosine triphosphate. c. nucleic acid. d. fatty acid. e. polysaccharide

Biology & Microbiology