G1/S phase and S phase CDK are

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#Question id: 12751

#Unit 13. Methods in Biology

A DNA sample has a 260/280 ratio of 2. Which of the following treatments can be used to get a better purity of DNA sample?

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#Question id: 18225

#Unit 7. System Physiology – Animal

________ refers to the long-term wear and tear on the body caused by the many simultaneous changes that need to occur to maintain homeostasis.

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#Question id: 411

#Unit 1. Molecules and their Interaction Relevant to Biology

The reaction ATP -> ADP + Pi is an example of a reaction.

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#Question id: 1740

#Unit 4. Cell Communication and Cell Signaling

Activation of resting B-cells by T-helper cells depends directly upon costimulatory interaction between:

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#Question id: 13228

#Unit 6. System Physiology – Plant

Classification of plant mineral nutrients according to biochemical function

Mineral nutrient	Functions
A.)  Silicon(Si)	1.)    Constituent of alcohol dehydrogenase, glutamic dehydrogenase, carbonic anhydrase, etc
B.)  Manganese(Mn)	2.)    Component of sugar phosphates, nucleic acids, nucleotides, coenzymes, phospholipids, phytic acid, etc. Has a key role in reactions that involve ATP
C.)  Zinc(Zn)	3.)    Contributes to cell wall mechanical properties, including rigidity and elasticity.
D.)  Phosphorous(P)	4.)    Component of ascorbic acid oxidase, tyrosinase, monoamine oxidase, uricase, cytochrome oxidase, phenolase, laccase, and plastocyanin.
E.)   Copper(Cu)	5.)    Required for activity of some dehydrogenases, decarboxylases, kinases, oxidases, and peroxidases. Involved with other cation-activated enzymes and photosynthetic O2 evolution

Which of the following combination is correct?