Which of the following statement are true about Osteoprotegerin?

a. A cytokine that promotes bone resorption.

b. A cytokine that inhibits bone resorption.

c. Produced by Osteoblasts

d. Produced by osteoclast

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#Question id: 24636

#Unit 2. Cellular Organization

The degree of supercoiling of bacterial DNA is maintained by regulation of the net activity of topoisomerases,

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#Question id: 31177

#Unit 7. System Physiology – Animal

Which of the following ion uptake into the presynaptic terminal causes release of the neurotransmitter?

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#Question id: 2757

#Unit 2. Cellular Organization

_______________ a protein that affects the folding of other proteins or the assembly of complex structures.

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#Question id: 3393

#Unit 11. Evolution and Behavior

Natural Selection can maintain a polymorphism when

a. heterozygote is fitter than the homozygote

b. Fitnesses of genotypes are negatively frequency dependent.

c. Fitnesses of genotypes are positive frequency dependent.

d. One homozygote is fitter than the heterozygote

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#Question id: 15001

#Unit 8. Inheritance Biology

You cross true breeding lizards that are either green or albino and discover that all the offspring are striped green and white. Which is the most likely result if you cross two striped lizards?