#Question id: 5016
#SCPH06 I Botany
Approximately how far back in time does the fossil record extend?
#Question id: 12943
#SCPH01 Biochemistry
#Question id: 3656
#SCPH01 Biochemistry
In nucleotide excision repair, an endonuclease makes nicks on either side of the lesion.
#Question id: 10160
#I Life Science/ Life Sciences Group – I-V
Which of the following statements about the C4 cycle is true ?
a.) C4 plants uses the enzyme phosphoenolpyruvate carboxylase (PEPCase), rather than rubisco
b.) Unlike rubisco, O2 does not compete with HCO3 − in the carboxylation catalyzed by PEPCase
c.) initial carboxylation catalyzes in bundle sheath cells, four-carbon acids formed and flow across the diffusion barrier to the mesophyll cells
d.) during decarboxylation, releasing CO2 that is refixed by rubisco via the Calvin–Benson cycle
#Question id: 4744
#SCPH28 | Zoology
Assume that long ear lobes in humans are an autosomal dominant trait that exhibits 50% penetrance. A person who is heterozygous for long ear lobes mates with a person who is homozygous for normal ear lobes. What is the probability that their first child will have long ear lobes.