An immune response to a specific antigen generates the production of which type of cell that launches an attack the next time that same antigen infects the body?

a. effector cells

b. memory cells

c. t cells

d. antibodies

Which best describes the pH scale? Acids measure below 7. Bases measure below 7. Acids and bases measure above 7. Bases and acids measure at 7.

Explain how a food web is different from a food chain

3 terms used to describe organisms such as algae 3 terms describe organisms such as herbivorous fish 3 terms used to describe organisms such as small carnivorous fish 3 terms used to describe organisms such as large carnivorous fish

Where does geothermal energy come from?

Which does most of the work of the endocrine system APEX

What is the name of a complex group of organisms that are connected and interact with one another?

Oceanic crust is composed mainly of basalt. continental crust is composed mainly of granite. why does oceanic crust generally tend to subduct under continental crust when plates collide

What is placebo and why is it used in some experiments

What is organ? a. group of different types of tissue that work together to perform a specific function or related functions. b. group of cells that work together to perform a similar function. c.

The temperate phage lambda can undergo two life cycles depending on the environmental cues. During which cycle does phage lambda form a prophage? Choose one: A. lysogeny B. burst cycle C. lytic cycle D. slow-release cycle