Practice Questions

TLS Online TPP Program

#Question id: 762

Regarding the sugar residues in nucleic acids, which, if any, of the following statements is incorrect?

#SCPH28 | Zoology

The sugar is always based on a heterocyclic ring that consists of one oxygen atom and four carbon atoms, one of which is connected to a fifth carbon atom, the 5’ carbon atom.
The internal sugar residues in a DNA strand normally have free hydroxyl groups, unlike those in an RNA strand.
Bases are covalently linked to the carbon 1’ atoms of the sugars.
Neighboring sugar residues are linked to each other by a phosphodiester bond that connects the 3’ carbon atom on one sugar to the 5’ carbon atom of its neighbour.

More Questions

#Question id: 7299

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

Maintenance of the shoot meristems in adult Arabidopsis plants relies on which of the following mechanisms?

#Question id: 7299

#SCPH06 I Botany

Maintenance of the shoot meristems in adult Arabidopsis plants relies on which of the following mechanisms?

#Question id: 7299

#SCPH28 | Zoology

Maintenance of the shoot meristems in adult Arabidopsis plants relies on which of the following mechanisms?

#Question id: 7300

#SCPH01 Biochemistry

Following genes regulate flowering, column I represents genes, column II represents transcription factor family and column III represents functions.

Column I	Column II	Column III
A. FLOWERING D (FD)	i. bZIP	a. Activates flowering downstream of florigen
B. SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1)	ii. MADS	b. Receptor for florigen
C. FLOWERING LOCUS C		c. Class E homeotic genes
D. SEPALLATA (SEP)		d. Floral repressor

Which of the following is correct?

#Question id: 7300

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

Following genes regulate flowering, column I represents genes, column II represents transcription factor family and column III represents functions.

Column I	Column II	Column III
A. FLOWERING D (FD)	i. bZIP	a. Activates flowering downstream of florigen
B. SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1)	ii. MADS	b. Receptor for florigen
C. FLOWERING LOCUS C		c. Class E homeotic genes
D. SEPALLATA (SEP)		d. Floral repressor

Which of the following is correct?

#Question id: 7300

#SCPH06 I Botany

Following genes regulate flowering, column I represents genes, column II represents transcription factor family and column III represents functions.

Column I	Column II	Column III
A. FLOWERING D (FD)	i. bZIP	a. Activates flowering downstream of florigen
B. SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1)	ii. MADS	b. Receptor for florigen
C. FLOWERING LOCUS C		c. Class E homeotic genes
D. SEPALLATA (SEP)		d. Floral repressor

Which of the following is correct?