1. if the cells that produce gametes are diploid, how do the gametes become haploid cells? 2. organisms produced by reproduction will have cells that are diploid. 3. meiosis l results in the separation of while meiosis ll results in the separation of 4. when is the diploid number of chromosomes reduced to the haploid number if chromosomes? 5. what are tetrads? 6. tetrads are formed during what stage of meiosis? these questions are from my study guide and i don’t understand them. it would great if i could get some of these answers.

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.

Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material