Cleavage of the carotenoid by the enzyme NCED (9-cis-epoxycarotenoid dioxygenase) is a rate-limiting highly regulated step in ABA synthesis that produces the 15-carbon precursor molecule xanthoxin in

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#Question id: 15909

#Unit 5. Developmental Biology

Which of the following gene activated by Doublesex complex to promote growth of the female portions of the genital disc?

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#Question id: 867

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the correct diseases with their precursors

Disease	Protein or precursor involved in disease
1. Cystic fibrosis	a. Prion protein
2. Creutzfeldt–Jakob disease	b. CFTR
3. Familial hypercholesterolaemia	c. LDL receptor
4. fatal familial insomnia	d. β-amyloid protein
5. Alzheimer’s disease	e. β-hexosaminidase

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#Question id: 13204

#Unit 6. System Physiology – Plant

Many of the carriers of Sucrose–H+ symporters in the phloem play various role in transport, most of the transporters are found in source, path, and sink tissues. Some carriers are characterized such as;

a) SUT1, has high-affinity / low-capacity transporter found in the minor veins of source tissues, appears to be important in phloem loading.

b) Important role of SUT1 in phloem loading appears to be complemented by SUT4, which is low-affinity/high-capacity carrier

c) SUT2, appears to function as a sucrose sensor. This is indicated by findings showing that SUT2 is more highly expressed in sink and path tissues than in source leaves.

d) The major sucrose transporters in phloem loading into the companion cells and final uptake into companion cells appears to be the function of SUT4

Which of the following combination is correct?

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#Question id: 19369

#Unit 12. Applied Biology

Genes are transferred from prokaryotes into plants this phase is considered as 

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#Question id: 1233

#Unit 4. Cell Communication and Cell Signaling

Transphosphorylation (cross-phosphorylation) of receptor tyrosine kinases

a. inhibits catalytic activity.

b. promotes transphosphorylation of additional tyrosine residues.

c. triggers release of the ligand.

d. generates binding sites for signaling molecules.