Match each of the following structures with its correct definition A. The exchange of gases with the respiratory medium
B. Respiratory structures that represent invaginations of the body
C. Extensive system of air tubes in insects
D. Air hole on insect exoskeleton that controls air flow.
E. Small air pocket of mammalian lung
F. The air tubes of the unique respiratory system of insects
1. Breathing

2. Lungs

3. Alveoli

4. Tracheae

5. Tracheal system

6. Spiracles

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.

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

What is the role of the phospholipid belayer in cellular transport in living cells