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fred likes to explore nearby streams during the summer. however, one winter there is a lot of rain near the stream. how might the stream change before the next summer? a. the stream will be in a deep canyon. b. the stream will have dried up. c. the stream banks will be steeper. d. the stream water will be shallower.

Salmonella typhimurium is a food-borne bacterial pathogen that can cause severe gastrointestinal disease. salmonella is often phagocytosed by macrophages that normally destroy bacterial pathogens, but this bacterium is somehow able to prevent the complete maturation of phagolysosomes. salmonella is able to tolerate the low ph of phagolysosomes, and in fact responds to the drop in ph by secreting toxins that interfere with other cellular responses. which of the following differences would you expect to contribute to the survival of a bacterium within an salmonella-containing phagosome, compared to a healthy phagolysosome? decreased activity of acid hydrolases increased activity of acid hydrolases decreased import of h+ ions increased import of h+ ions my guess is decreased activity of acid hydrolases but i'm not sure.

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

How can you tell the difference between rough er from smooth er?