B cells produce antigen
t cell are helper,killer,memory cells
they hold memory of pathogens i the system
The electron transport chain depends on the Krebs cycle to produce NADH and FADH2. These are the starting materials for the chain to be able to make ATP. No the first aerobic part of cellular respiration is the electron transport chain.
It's either the ophthalmic, maxillary, or the mandibular.
Answer: Exponential growth occurs when resources in the environment are abundantly available to a species.
Explanation: When a food source amount drops, so does the survival rate of the predator that eats that specific food source. When a food source grows too abundantly at too fast a rate, predators increase in numbers.
The natural rate of extinction as assumed by science is about 5 species per year. Currently scientists estimate we are losing species at 1000-10000 times that rate, with multiple species disappearing every day. A note on this idea is that the average extinction rate gives an unrealistic depiction of nature when we consider the catastrophic extinction events that ended the dinosaurs and shaped the ice age.
