What cells make antibodies?

What will be an ideal response?


plasma B cells

Biology & Microbiology

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Several species of sea urchins may inhabit the same tide pool and their reproductive periods overlap. Although they practice external fertilization, they seldom interbreed because eggs produce chemicals that are only attractive to sperm of their own species. This is an example of a _________ barrier that _______________.  

A.  prezygotic; causes geographic isolation B.  prezygotic; causes temporal isolation C.  prezygotic; prevents gamete fusion D.  postzygotic; prevents zygote fusion E.  postzygotic; causes hybrid infertility

Biology & Microbiology

Directional, light-triggered plant development is known as  

A.  thigmotropism. B.  phototropism. C.  thigmonasty. D.  photomorphogenesis. E.  acid-growth movement.

Biology & Microbiology

Multiprotein complexes known as ________ minimize diffusion distances and facilitate electron flow between electron transport complexes

Fill in the blank with correct word.

Biology & Microbiology

During gametogenesis, what percentage of gametes would be trisomic if the nondisjunction event occurs during meiosis II?

What will be an ideal response?

Biology & Microbiology