Tay-Sachs disease is the result of a genetic defect in the metabolism of:

#Question id: 1410

#SCPH05 I Biotechnology

The number of alterations in DNA per cell per day is

#Question id: 10899

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

Companion cells transport of photosynthetic products from producing cells in mature leaves to the sieve elements in the minor veins of the leaf. There are at least three different types of companion cells in the minor veins of mature, exporting leaves, All three cell types have dense cytoplasm and abundant mitochondria;

#Question id: 823

#SCPH01 Biochemistry

chaotropic agents such as guanidinium ion and urea, the efficiency of the chaotropic agent is measured in terms of-

#Question id: 9236

#SCPH06 I Botany

Which of the following outcomes is caused by excessive nutrient runoff into aquatic ecosystems?

#Question id: 7308

#SCPH01 Biochemistry

In Arabidopsis thaliana, the transition to flowering involves multiple factors, pathways and meristem identity genes. Following statements regarding to the mechanism and function of meristem identity genes.

 A. FT mRNA is expressed in companion cells of the leaf vein in response to multiple signals, including day length, light quality, and temperature.

 B. The FT–FD complex activates AP1 in the inflorescence meristem and SOC1 in the floral meristem, which triggers LFY gene expression.

 C. LFY and AP1 trigger expression of the floral homeotic genes.

 D. FLC acts as a negative regulator of SOC1 in the meristem and as a negative regulator of FT in the leaves.

 Which of the following is incorrect?