Evidence of which structure or characteristic would be most surprising to find among fossils of the Ediacaran fauna?

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#Question id: 1563

#SCPH06 I Botany

A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to ________.

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#Question id: 5600

#SCPH01 Biochemistry

Stem cells found in the tissues of organs after the organ has matured and usually involved in replacing and repairing tissues of that particular organ, forming a subset of cell types, termed as

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#Question id: 2284

#I Life Science/ Life Sciences Group – I-V

Because they have chloroplasts for energy production, plant cells

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#Question id: 16074

#I Life Science/ Life Sciences Group – I-V

Match the items in Group 1 with an appropriate description in Group 2 

Group 1                                                    Group 2 

P. PSI-BLAST                                    1. ungapped, aligned motif 

Q. CLUSTALW                                 2. Profiles

R. BLOCK                                         3. Heuristic method

S. FASTA                                           4. Multiple sequence alignment

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#Question id: 358

#SCPH01 Biochemistry

Consider the following reaction at equilibrium: CO2 + H2O ⇔ H2CO3. What would be the effect of adding additional H2O?