Which of the following characteristics generally applies to protostome development?

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#Question id: 29117

#Unit 6. System Physiology – Plant

Light reactions of photosynthesis are carried out by four major protein complexes: Photosystem I (PSI), photosystem II (PSII), the cytochrome b6f complex and ATP synthase. The following are certain statements on PSII:

a. Red light absorbed by photosystem II (PSII) produces a strong oxidant and a weak reductant.

b. Far-red light absorbed by photosystem II (PSI) produces a weak oxidant and a strong reductant.

c. The strong oxidant generated by PSII oxidizes water,

d. The strong reductant generated by PSII oxidizes water

Which one of the following combinations of the above statements is correct?

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#Question id: 28223

#Unit 5. Developmental Biology

A stem cell has the capacity to differentiate into only one cell type this shows_

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#Question id: 11189

#Unit 7. System Physiology – Animal

Refer to the following graph of an action potential to answer the question.

At label ________, the cell is not hyperpolarized; however, repolarization is in progress, as the sodium channels are inactivated or becoming inactivated, and many potassium channels have opened.

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#Question id: 33439

#Unit 1. Molecules and their Interaction Relevant to Biology

Histidine is synthesised thru

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#Question id: 16316

#Unit 7. System Physiology – Animal

Psychology stress: