PLEASE HELP! Which of the following mutations would be most likely to have a harmful effect on an organism? A. a deletion of a guanine base near the center of an intron

B. a substitution of a thymine for an adenine

C. a deletion of 3 bases near the center of a gene

D. an insertion of a cytosine base near the start of an exon

Name the type of chemical that speeds up digestion

Select all the correct answers. lactobacillus is a bacteria that live inside humans. these bacteria live on the nutrients from our bodies. they to keep our gut clean and healthy. s. typhi is a bacteria that enter our bodies through contaminated food. this bacteria causes infections in the body. based on this information, which two statements about the association between these bacteria and humans are true? a. lactobacillus shares a parasitic relationship with humans. b. s .typhi shares a parasitic relationship with humans. c. both lactobacillus and s. typhi share a parasitic relationship with humans. d. both lactobacillus and s. typhi share a mutualistic relationship with humans. e. lactobacillus shares a mutualistic relationship with humans, and s. typhi shares a parasitic relationship multiply chrse

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond