Cytotoxic t cells recognize cells that have been infected by viruses when the infected cells have been coated with complement at the same time that neutrophils release their toxins into damaged tissue only after the infected cells have been ingested by macrophages because the infected cells have the pathogen's antigens on their surface save and exit

Question 1 which of the following allows cells to take in fluids? a. phagocytosis b. pinocytosis c. exocytosis d. receptor-mediated endocytosis question 2 molecules move along their concentration gradient (from areas of high concentration to low concentration) using active transport mechanisms. a. true b. false question 3 which of the following powers active transport (ie. provides the energy for)? a. glucose b. transport proteins c. atp d. phospholipids question 4 what type of lipid is a major component of the plasma membrane? a. cholesterol b. phosopholipids c. proteins d. triglycerides

One student group hypothesized that the dry baker's yeast must be alive. the temperature change, odor, and bubble foation, they said, indicated whych characteristic of life

Approximately how many times does an average human heart beat in a lifetime?